European Journal Of Radiology Research Articles

Global research on artificial intelligence in thyroid-associated ophthalmopathy: A bibliometric analysis

PurposeTo provide an overview of global publications on artificial intelligence (AI) in thyroid-associated ophthalmopathy (TAO) through bibliometric analysis. MethodsPublications related to AI in TAO from inception until April 2023 were retrieved from the Web of Science database. The trends of publications and citations, publishing performance, collaboration among countries and institutions, and the funding agencies, relevant research domains, leading journals, hotspots and their evolution were identified. ResultsA total of 55 publications were included for analysis. The number of publications and citations continued to grow since 1998, with a significant acceleration of growth after 2020. China is the most productive country with the highest number of productive institutions, followed by the United States. European countries have the most extensive collaboration. The most relevant research domain was radiology, nuclear medicine & medical imaging. The European Journal of Radiology was one of the most productive journals, with the most influential articles published. "Thyroid-associated ophthalmopathy" and "neural network" maintain hotspots during the entire period. Studies were more focused on clinical features during 1998 and 2016, clinical features and medical data during 2017 and 2020, and medical data and AI techniques during 2021 and 2023. ConclusionsThis study summarized the global research status regarding AI in TAO in terms of trends, countries, institutions, research domains, journals, and key topics. AI has shown great potential in TAO. Sponsored by funding agencies such as NSFC, China has become the most productive country in the field of AI in TAO. Our findings help researchers better understand the development of this field and provide valuable clues for future research directions.

Gender Equality Trends of First Authors in Publications of Artificial Intelligence and Thyroid.

Thyroid diseases are diverse, ranging from benign conditions to potentially life-threatening disorders. Recently, the application of artificial intelligence (AI) in evaluating thyroid disease has significantly enhanced medical research, diagnosis prediction, and algorithm development. Coupled with this advancement is the rising focus on the importance of gender equality in scientific publications. This study delves into the gender trends of first authors in papers related to "Artificial Intelligence and Thyroid" sourced from PubMed from 2003 to 2022, scrutinizing these trends based on both country and year. A bibliometric analysis was conducted on PubMed to retrieve relevant articles over this 19-year time span. Following this, the names and affiliated countries of the first authors were determined. The Namsor app, a tool for classifying personal names by gender, origin, or ethnicity, was then used to segregate the data based on gender. Statistical analyses were performed using the R software- ARIMA model and Fisher's exact test was applied to examine the correlations between gender and country of origin. From the 254 analyzed articles, 43.5% of the first authors were female, while 56.69% were male. The year 2022 saw the most significant number of female first-author publications. Intriguingly, the European Journal of Radiology was prominent due to its favorable gender ratio. Moreover, the association between gender and country was significant, with China being a standout. Limitations included focusing only on PubMed journals and using a third party for gender identification. Nevertheless, the study reveals a move toward gender parity in AI and thyroid research over the past 18 years, emphasizing the importance of sustained efforts for academic inclusivity.

Towards reproducible radiomics research: introduction of a database for radiomics studies

ObjectivesTo investigate the model-, code-, and data-sharing practices in the current radiomics research landscape and to introduce a radiomics research database.MethodsA total of 1254 articles published between January 1, 2021, and December 31, 2022, in leading radiology journals (European Radiology, European Journal of Radiology, Radiology, Radiology: Artificial Intelligence, Radiology: Cardiothoracic Imaging, Radiology: Imaging Cancer) were retrospectively screened, and 257 original research articles were included in this study. The categorical variables were compared using Fisher’s exact tests or chi-square test and numerical variables using Student’s t test with relation to the year of publication.ResultsHalf of the articles (128 of 257) shared the model by either including the final model formula or reporting the coefficients of selected radiomics features. A total of 73 (28%) models were validated on an external independent dataset. Only 16 (6%) articles shared the data or used publicly available open datasets. Similarly, only 20 (7%) of the articles shared the code. A total of 7 (3%) articles both shared code and data. All collected data in this study is presented in a radiomics research database (RadBase) and could be accessed at https://github.com/EuSoMII/RadBase.ConclusionAccording to the results of this study, the majority of published radiomics models were not technically reproducible since they shared neither model nor code and data. There is still room for improvement in carrying out reproducible and open research in the field of radiomics.Clinical relevance statementTo date, the reproducibility of radiomics research and open science practices within the radiomics research community are still very low. Ensuring reproducible radiomics research with model-, code-, and data-sharing practices will facilitate faster clinical translation.Key Points• There is a discrepancy between the number of published radiomics papers and the clinical implementation of these published radiomics models.• The main obstacle to clinical implementation is the lack of model-, code-, and data-sharing practices.• In order to translate radiomics research into clinical practice, the radiomics research community should adopt open science practices.

Imaging Based Spleen Volume Assessments in Myelofibrosis Clinical Trials - Do We Need a Double Read Model?

▪Myelofibrosis (MF) is a type of chronic blood cancer characterized by bone marrow fibrosis, extramedullary hematopoiesis and splenomegaly. Approximately 89% of patients present palpable splenomegaly with a compromised quality of life and reduced survival. The International Working Group Myeloproliferative Neoplasm Research and Treatment (IWG-MRT) criteria utilize spleen volume (SV) as part of clinical improvement (CI) response in MF trials. These include evaluation of spleen response as a primary/ secondary endpoint - defined as ≥35% SV reduction from baseline. Progressive disease is defined as ≥25% increase in SV from baseline level. Magnetic resonance imaging (MRI) and Computed tomography (CT) provide a non-invasive way to assess change in spleen size both spatially and temporally in a clinical study. While image acquisition with optimized and harmonized protocols is key, a central independent review of images also plays a critical role in correct patient outcome determination. The aim of this study is to determine if a double read model for central independent review is necessary to maintain a high accuracy of SV estimation. To this effect, alignment among independent readers over review criteria was assessed: inter-reader variability (IRV), in addition to assessment of consistency in review approach: intra-reader variability (ARV).Retrospective analysis was implemented on imaging data across 12 multi-center MF trials-MRI/CT images of two time-points (baseline and 1 follow-up) from 142 trial participants for ARV and 85 trial participants for IRV analysis. All images passed image quality checks and were processed for manual segmentation of the spleen by image analysts, followed by an over-read by trained radiologists. The spleen volume was calculated as the sum of spleen cross-sectional area across all slices multiplied by slice interval. For ARV analysis, the images were presented to the same readers in a blinded fashion at least three weeks after the initial review. For IRV analysis, images read by a primary reader were then presented to the secondary reader. The percent discrepancy for ARV and IRV were calculated as the ratio of difference between primary and secondary spleen volumes, divided by the average of the two.The average ARV discrepancy was 0.37±0.55 % (mean±standard deviation) as shown in Fig 1a. Zero subjects had an ARV discrepancy of more than 5%. As shown in Fig 2a, majority of the cases were under an ARV discrepancy of 1%. These results show excellent consistency in approach of readers over time in comparison to 2.8±3.5% reportedby Harris et al (European Journal of Radiology, 2010). For IRV, the average discrepancy was 0.62±0.85 % as shown in Fig 1b. 1.1% of cases had an IRV discrepancy of more than 5%. As shown in Fig 2b, most of the cases were within an ARV discrepancy of 1%. These results show a high level of alignment between readers in their imaging review approach in comparison to 6.4±9.8% reportedby Harris et al (European Journal of Radiology, 2010).The high level of reliability and repeatability seen across radiological reads suggests that a single read model is sufficient to assess imaging volumetrics-based endpoints. It is important to note that a multi-step approach was used to thoroughly train, test and monitor independent readers throughout the study duration. Readers were chosen based on high level of experience with the indication and analysis application. Reader onboarding involved an accurate overview and clear instruction on the review assessments. Multiple MRI/ CT imaging cases were utilized for reader testing and training. Since image quality can be a significant factor influencing the confidence level of a reader, these cases reflected examples of imaging artifacts expected on such trials, such as motion artifacts, low image resolution, ghosting and low contrast to noise ratio. Routine quality checks and variability assessments were done throughout the trial duration, with prompt corrective action taken to prevent inaccuracy of study results. These actions included issuing training points or re-read of cases that contained established error. Further work is necessary on assessing how variables such as spleen size, imaging artifacts and change in imaging modality affect reader variability. [Display omitted] DisclosuresNo relevant conflicts of interest to declare.

Dataset of voxelwise correlated signal values of ADC, rCBV and FAP-specific PET of 13 Glioblastoma patients.

This dataset is based on multimodal MRI and FAP-specific PET/CT Imaging applied to 13 patients with histologically proven glioblastomas. Imaging Data was processed using Medical Imaging Interaction Toolkit (MITK) software. MRI images (contrast enhanced T1w, T2w/FLAIR, ADC, rCBV) were co-registrated with FAP-specific PET images. T2w/FLAIR hyperintensities and contrast enhancing lesions were segmented manually. Necrotic areas were segmented manually and subtracted from T2w/FLAIR hyperintensities and contrast enhancing lesions. Voxelwise ADC/rCBV and PET signal intensities in projection on T2w/FLAIR hyperintensities and contrast enhancing lesions were extracted using the pixel dumper function of the MITK software and stored as excel-files. The data presented in this article has been analysed and described in the article FAP-specific “PET signaling shows a moderately positive correlation with relative CBV and no correlation with ADC in 13 IDH wildtype Glioblastomas” published in the European Journal of Radiology.

Prevalence and the Risk Factors for Asymptomatic Carotid Artery Stenosis Among Type II Diabetes Mellitus Patients

Prevalence and the Risk Factors for Asymptomatic Carotid Artery Stenosis Among Type II Diabetes Mellitus Patients

Recognizing and Minimizing Artifacts at CT, MRI, US, and Molecular Imaging.

Understanding the physical principles and technical assumptions that underlie image production can help radiologists eliminate or minimize common imaging artifacts and improve diagnostic accuracy.

Characteristics, Trends, and Quality of Systematic Review and Meta-Analysis in General Radiology between 2007 and 2015

To evaluate the trends, characteristics, and quality of systematic review and meta-analysis in general radiology journals. We performed a PubMed search to identify systematic reviews and meta-analyses that had been carried out in the field of radiology between 2007 and 2015. The following data were extracted: journal, impact factor, type of research, year of publication, radiological subspecialty, imaging modalities used, number of authors, affiliated department of the first and corresponding authors, presence of a radiologist and a statistician among the authors, discordance between the first and corresponding authors, funding, country of first author, methodological quality, methods used for quality assessment, and statistics. Ultimately, we included 210 articles from nine general radiology journals. The European Journal of Radiology was the most common journal represented (47 of 210; 22.4%). Meta-analyses (n = 177; 84.3%) were published about five times more than systematic reviews without meta-analysis (n = 33; 15.7%). Radiology of the gastrointestinal tract was the most commonly represented subspecialty (n = 49, 23.3%). The first authors were most frequently located in China (n = 64; 30.3%). In terms of modality, magnetic resonance imaging was used most often (n = 59; 28.1%). The number of authors tended to progressively increase over time, and the ratio of discordance between the first and corresponding authors also increased significantly, as did the proportion of research that has received funding from an external source. The mean AMSTAR assessment score improved over time (5.87/11 in 2007-2009, 7.11/11 in 2010-2012, and 7.49/11 in 2013-2015). In this regard, the journal Radiology had the highest score (7.59/11). The quantity and quality of radiological meta-analyses have significantly increased over the past 9 years; however, specific weak areas remain, providing the opportunity for quality improvement.

Abdominal and Pelvic Trauma: Misses and Misinterpretations at Multidetector CT: Trauma/Emergency Radiology.

HomeRadioGraphicsVol. 37, No. 2 Previous RadioGraphics FundamentalsAbdominal and Pelvic Trauma: Misses and Misinterpretations at Multidetector CT: Trauma/Emergency RadiologyMichael N. Patlas , David Dreizin, Christine O. Menias, Nikki Tirada, Sanjeev Bhalla, Savvas Nicolaou, Nataly Farshait, Douglas S. KatzMichael N. Patlas , David Dreizin, Christine O. Menias, Nikki Tirada, Sanjeev Bhalla, Savvas Nicolaou, Nataly Farshait, Douglas S. KatzAuthor AffiliationsFrom the Division of Emergency/Trauma Radiology, Department of Radiology, McMaster University, Hamilton General Hospital, 237 Barton St E, Hamilton, ON, Canada L8L 2X2 (M.N.P.); Department of Diagnostic Radiology, University of Maryland Medical Center, R. Adams Cowley Shock Trauma Center, Baltimore, Md (D.D.); Department of Radiology, Mayo Clinic School of Medicine, Scottsdale, Ariz (C.O.M.); Department of Radiology, Brigham and Women’s Hospital, Brookline, Mass (N.T.); Mallinckrodt Institute of Radiology, Washington University School of Medicine, St Louis, Mo (S.B.); Division of Emergency/Trauma Radiology, Department of Radiology, University of British Columbia, Vancouver, BC, Canada (S.N.); Infection Prevention and Control, Humber River Hospital, Toronto, Ont, Canada (N.F.); and Department of Radiology, Winthrop-University Hospital, Mineola, NY (D.S.K.).Address correspondence to M.N.P. (e-mail: [email protected]).Michael N. Patlas David DreizinChristine O. MeniasNikki TiradaSanjeev BhallaSavvas NicolaouNataly FarshaitDouglas S. KatzPublished Online:Mar 13 2017https://doi.org/10.1148/rg.2017160067MoreSectionsFull textPDF ToolsImage ViewerAdd to favoritesCiteTrack CitationsPermissionsReprints ShareShare onFacebookTwitterLinked In AbstractBeing mindful of potential diagnostic pitfalls in trauma imaging; having a thorough, efficient, and informed search strategy; and developing a working knowledge of commonly missed traumatic injuries can help radiologists improve the care of patients with abdominopelvic trauma.Suggested ReadingsChernyak V, Patlas MN, Menias CO, et al. Traumatic and non-traumatic adrenal emergencies. Emerg Radiol 2015;22(6):697–704. Crossref, Medline, Google ScholarDreizin D, Munera F. Blunt polytrauma: evaluation with 64-section whole-body CT angiography. RadioGraphics 2012;32(3):609–631. Link, Google ScholarLubner M, Menias C, Rucker C, et al. Blood in the belly: CT findings of hemoperitoneum. RadioGraphics 2007;27(1):109–125. Link, Google ScholarArticle HistoryReceived: Mar 21 2016Revision requested: July 11 2016Revision received: July 18 2016Accepted: Aug 8 2016Published online: Mar 13 2017Published in print: Mar 2017 FiguresReferencesRelatedDetailsCited ByRadiopaedia.orgLizSilverstone2023CT Imaging and Management of Blunt Splenic Trauma: Lessons for Today and TomorrowMichael N. Patlas, 2 February 2021 | Radiology, Vol. 299, No. 1Invited Commentary: Imaging and Management of Pancreatic TraumaMichael N. Patlas, 7 January 2021 | RadioGraphics, Vol. 41, No. 1Radiology and A Radiologist: A Keystone in the Turmoil of Trauma SettingKhadijaHussain, DeepakVerma, AmenaFiroz, Karez SNamiq, MahamRaza, MuhammadHaris, ManelBouchama, SafeeraKhan2021 | CureusImaging Evaluation of Abdominopelvic Gunshot TraumaFaezeh Sodagari, Douglas S. Katz, Christine O. Menias, Mariam Moshiri, John S. Pellerito, Adel Mustafa, Margarita V. Revzin, 1 October 2020 | RadioGraphics, Vol. 40, No. 6Errors in ImagingHarisChrysikopoulos2020Imaging of blunt bowel and mesenteric injuries: Current statusMostafaAlabousi, Vincent M.Mellnick, RayehKashef Al-Ghetaa, Michael N.Patlas2020 | European Journal of Radiology, Vol. 125Changes in Approach to Solid Organ Injury: What the Radiologist Needs to KnowSiobhán B.O’Neill, SairaHamid, SavvasNicolaou, Sadia R.Qamar2020 | Canadian Association of Radiologists Journal, Vol. 71, No. 3Errors in Emergency and Trauma RadiologyKateHames, Michael N.Patlas, Vincent M.Mellnick, Douglas S.Katz2019Errors in Emergency and Trauma RadiologyGabrieleMasselli, MartinaDerme2019Diagnostic Imaging in Polytrauma PatientsStefanoGiannecchini, ValentinaCaturano, CarmeloRende, ViolaValentini, MargheritaTrinci, VittorioMiele2018Multi-modality imaging of the leaking ureter: why does detection of traumatic and iatrogenic ureteral injuries remain a challenge?AbdullahAlabousi, Michael N.Patlas, Christine O.Menias, DavidDreizin, SanjeevBhalla, ManHon, AndresO’Brien, Douglas S.Katz2017 | Emergency Radiology, Vol. 24, No. 4Accompanying This ArticleAbdominal and Pelvic Trauma: Misses and Misinterpretations at Multidetector CTMay 30 2018Default Digital Object SeriesRecommended Articles CT of Penetrating Abdominopelvic TraumaRadioGraphics2021Volume: 41Issue: 4pp. 1064-1081Imaging Evaluation of Abdominopelvic Gunshot TraumaRadioGraphics2020Volume: 40Issue: 6pp. 1766-1788Invited Commentary: Key Concepts of CT for Penetrating Abdominopelvic InjuriesRadioGraphics2021Volume: 41Issue: 4pp. E119-E120Multidetector CT Findings in the Abdomen and Pelvis after Damage Control Surgery for Acute Traumatic InjuriesRadioGraphics2019Volume: 39Issue: 4pp. 1183-1202Imaging Evaluation of Tracheobronchial InjuriesRadioGraphics2020Volume: 40Issue: 2pp. 515-528See More RSNA Education Exhibits Traumatic Diaphragm Rupture: A Pictorial ReviewDigital Posters2020Trauma Meets the Urinary Tract: What the Surgeions Needs to KnowDigital Posters2020Current State of Affairs in Trauma Body Imaging: Computed Tomography (CT) ProtocolingDigital Posters2020 RSNA Case Collection Traumatic Pseudoaneurysm RSNA Case Collection2021Left Hemidiaphragmatic Rupture RSNA Case Collection2021Traumatic Diaphragmatic RuptureRSNA Case Collection2020 Vol. 37, No. 2 Slide PresentationSupplemental MaterialMetrics Altmetric Score PDF download

Quantitative Assessment of Rectal Cancer Response to Neoadjuvant Combined Chemotherapy and Radiation Therapy: Comparison of Three Methods of Positioning Region of Interest for ADC Measurements at Diffusion-weighted MR Imaging.

Quantitative Assessment of Rectal Cancer Response to Neoadjuvant Combined Chemotherapy and Radiation Therapy: Comparison of Three Methods of Positioning Region of Interest for ADC Measurements at Diffusion-weighted MR Imaging.

The fate of abstracts presented at Turkish national radiology congresses in 2010-2012.

This study aims to evaluate the analysis and publication rates of abstracts presented at the Turkish National Radiology meetings in 2010-2012. Abstracts presented in the national radiology meetings of 2010, 2011, and 2012 were included in the study. The presentations were classified according to presentation type (oral or poster presentations), study type, study design, imaged organ or body systems, imaging modalities, time interval between the presentation and the publication date, and the journal in which the article was published. The conversion rate of presentations into full-text articles in peer-reviewed journals were surveyed through PubMed. The time from presentation in the meetings to publication was determined. The distribution of journals was also demonstrated. The total number of presentations submitted in three national radiology meetings was 3,192. The publication rate was 11% for the 2010 meeting, 8.2% for the 2011 meeting, and 9.6% for the 2012 meeting. A total of 300 papers were published, with an average of 15 months (range, 0-42 months) between presentation and final publication. The first three refereed international journals with the most number of papers derived from these meetings were Diagnostic and Interventional Radiology, Clinical Imaging, and European Journal of Radiology. The overall publication rate of scientific abstracts from Turkey was lower than those from overseas countries. Encouraging the authors to conduct higher-quality research would raise the publication rate as well as improve the quality and success of our scientific meetings.

Falling prey to the sunk cost bias: a potential harm of patient radiation dose histories.

Although patient dose histories will make valuable contributions to quality improvement and research initiatives, care must be taken to avoid misuse by physicians when making imaging decisions for individual patients.

EUROSON 2010, Copenhagen, Denmark – Winner of the Young Investigator Award – Luca Maria Sconfienza M.D.

He has published 11 scientific papers in peer-reviewed journals (total impact factor = 42,871), is co-author of 3 books and 5 book chapters. He also presented over 150 abstracts at Italian and foreign meetings. His research activity is mainly focused on skeletal radiology and ultrasound, ultrasound-guided procedures and pain treatment, and abdominal and genitor-urinary radiology. He won nine Italian and international scientific prizes for studies in musculoskeletal and genital ultrasound. In two years, he gave about 25 lectures on musculoskeletal and interventional ultrasound. He was involved as a radiologist in three international multi-centric clinical studies about inflammatory bowel diseases and rheumatoid arthritis.He is invited reviewer for European Radiology, European Journal of Radiology, Skeletal Radiology, European Journal of Obstetrics & Gynecology and Reproductive Biology.

Coronary computed tomography angiography in coronary artery disease.

To investigate the research directions of coronary computed tomography (CT) angiography in the diagnosis of coronary artery disease (CAD) based on a systematic review of the literature. A search of articles on coronary CT angiography in the diagnosis of CAD was performed during a 6-year-period between 2005 and 2010 from five main radiology journals namely, Radiology, American Journal of Roentgenology, European Radiology, European Journal of Radiology and British Journal of Radiology. Analysis of the references was focused on the research directions of coronary CT angiography with regard to the type of studies in terms of diagnostic value, application of dose-reduction strategies and resultant effective radiation doses with use of these techniques. One hundred and forty two studies were identified which met the selection criteria and were included in the analysis. 64-slice CT (single source and dual-source CT) dominated 78% of the coronary CT angiography studies. Prior to 2007, research was focused on the diagnostic value of coronary CT angiography, but since 2008 more attention has been paid to radiation dose reduction. Radiation dose was reported in 64 studies, representing 45% of total studies published in the five radiology journals. Various dose-saving strategies have been implemented and prospective electrocardiography-triggering and high pitch techniques were found to be the most effective approaches for radiation dose reduction, with the corresponding mean effective dose being 3.5 ± 1.9 mSv and 1.7 ± 0.6 mSv, respectively. This review shows that the current research in coronary CT angiography has shifted from the previous focus on diagnostic accuracy in CAD to more emphasis on radiation dose reduction.

Verification Bias: An Underrecognized Source of Error in Assessing the Efficacy of Medical Imaging

Diagnostic tests are validated by comparison against a "gold standard" reference test. When the reference test is invasive or expensive, it may not be applied to all patients. This can result in biased estimates of the sensitivity and specificity of the diagnostic test. This type of bias is called "verification bias," and is a common problem in imaging research. The purpose of our study is to estimate the prevalence of verification bias in the recent radiology literature. All issues of the American Journal of Roentgenology (AJR), Academic Radiology, Radiology, and European Journal of Radiology (EJR) between November 2006 and October 2009 were reviewed for original research articles mentioning sensitivity or specificity as endpoints. Articles were read to determine whether verification bias was present and searched for author recognition ofverification bias in the design. During 3 years, these journals published 2969 original research articles. A total of 776 articles used sensitivity or specificity as an outcome. Of these, 211 articles demonstrated potential verification bias. The fraction of articles with potential bias was respectively 36.4%, 23.4%, 29.5%, and 13.4% for AJR, Academic Radiology, Radiology, and EJR. The total fraction of papers with potential bias in which the authors acknowledged this bias was 17.1%. Verification bias is a common and frequently unacknowledged source of error in efficacy studies of diagnostic imaging. Bias can often be eliminated by proper study design. When it cannot be eliminated, it should be estimated and acknowledged.

Acute Pericarditis Assessed With Magnetic Resonance Imaging

A 19-year-old man with the diagnosis of acute pericarditis based on the classic clinical syndrome and an ECG (Figure 1A) was referred to our cardiac magnetic resonance (CMR) unit 1 month after his hospital admission because of suspected associated acute myocarditis. A follow-up ECG within the time frame of referral showed essentially significant regression of ST elevation (Figure 1B). An echocardiogram performed at the referring hospital on the same day (Figure 2A and 2B) was reported as showing mild concentric left ventricular (LV) hypertrophy with good LV systolic function (ejection fraction 75%). Figure 1. A, 12-Lead ECG showing sinus rhythm and widespread saddle-shaped ST elevation in the inferolateral leads. B, 12-Lead ECG showing sinus rhythm, PR-segment depression, and elevated ST-segment uptake in the inferior and septal leads. Figure 2. Transthoracic echocardiographic images during end diastole showing normal LV and right ventricular size and mild LV hypertrophy. Left parasternal short-axis view (A) and apical 4-chamber view (B) at the time of the initial MRI scan. …

Analysis of scientific papers in the field of radiology and medical imaging included in science citation index expanded published by Turkish authors

We aimed to analyze scientific papers published by Turkish authors in "radiology, nuclear medicine and medical imaging" journals included in the Science Citation Index Expanded and compared the number of published scientific papers from Turkey and other countries. We retrospectively searched all papers published by Turkish authors between 1945 and 2008 by using Web of Science software. We performed the analysis by typing "Turkey" in the address section and all radiology and medical imaging journals in the source title section using the general search function of the software. We further analyzed these results by using "analyze" function of the software according to the number of publications per year, journals, institution and type of papers. We also calculated total number of citations to published scientific papers using citation report function. We analyzed the rank of Turkey among other countries in terms of the number of published papers. Overall, 4,532 papers were published between 1945 and 2008. The first paper was published in 1976. Number of publications increased dramatically from 1976 (n = 1) to 2008 (n = 383). The top 5 journals publishing papers from Turkish authors were European Journal of Nuclear Medicine and Molecular Imaging (n = 328), Clinical Nuclear Medicine (n = 296), European Journal of Radiology (n = 289), European Radiology (n = 207) and Journal of Clinical Ultrasound (n = 186). All published papers received 18,419 citations and citation to paper ratio was 4.06. The rank of Turkey among other countries in terms of published papers improved during the last 25 years. Number of papers from Turkey published in radiology and medical imaging journals has increased at the start of the new millennium. Currently, Turkey is among the top 12 countries when the number of scientific papers published in radiology journals is taken into consideration.

Atherosclerotic Peripheral Vascular Disease Symposium II

Peripheral vascular diseases are important components of cardiovascular medicine. The high prevalence of these disorders in the clinical setting mandates effective communication among healthcare providers. The public health significance of these conditions requires clear and consistent terminology for community audiences. Therefore, the goal of this writing group was to suggest definitions, usage, and nomenclature of specific terms commonly used to describe vascular diseases by cardiovascular specialists and primary care communities. The need for clarity is driven by 2 major challenges: (1) the need for use of common keywords for literature searches; and (2) the need for healthcare professionals to use common, reasoned terminology when communicating with each other and with the public. The major structural components of the vascular system are the veins, lymphatic vessels, and arteries. These serve as the basis of the nomenclature system for vascular diseases (Figure). Figure. Major classification of vascular diseases. *Includes inflammatory, artery dysplasias, congenital, traumatic, and infections. In this report, the writing group focuses only on nomenclature that applies to non–coronary artery diseases. Venous and lymphatic diseases were outside the scope of this conference. Diseases of arteries are classified further into atherosclerotic occlusive disorders, nonatherosclerotic occlusive disorders, and aneurysms. …

Myocardial Ischemia Diagnosed by Dual-Energy Computed Tomography

For decades, dual-energy imaging has been used for tissue differentiation with several x-ray–based imaging modalities, exploiting the fact that the tissues in the human body show different absorption characteristics when penetrated with different x-ray spectra, spectra that are typically generated by different kV settings of the x-ray tube. Recently, dual-source computed tomography (CT) with 2 x-ray tubes and 2 detector arrays mounted in the same gantry has become available.1 After experience with earlier experimental prototypes, this dual-source CT for the first time enables the clinical acquisition of dual-energy CT studies simultaneously with a single scan. We used a dual-source CT scanner (Definition, Siemens, Forchheim, Germany) in dual-energy mode for performing coronary CT angiography in a 74-year–old woman with suspected coronary artery disease and prior abnormal nuclear rest/stress single-photon emission CT (SPECT). The CT scan was acquired with retrospective ECG-gating and the following scan parameters: 330-ms gantry rotation, pitch 0.2, and 32×2×0.6-mm …

Five-Year Follow-Up of the Medicine, Angioplasty, or Surgery Study (MASS-II)

Clinical trials are organized for many different reasons. Most drug and device trials are designed to demonstrate the safety and efficacy of a drug or device, not to prove that they are the optimal treatments for patients. On the other hand, treatment strategy trials are designed to study the value of one therapeutic regimen compared with another when equipoise or confusion exists regarding which course to pursue. Assumptions are based on prior knowledge and opinion; in the case of coronary artery disease, most trials have been divided into those studying patients who “need” revascularization (ie, EAST [Emory Angioplasty versus Surgery Trial], BARI [Bypass Angioplasty Revascularization Investigation], CABRI [Coronary Artery Bypass Revascularization Investigation], RITA [Second Randomized Intervention Treatment of Angina], GABI [German Angioplasty Bypass Intervention], ARTS [Arterial Revascularization Therapies Study], SOS [Stent or Surgery], ERACI II [Estudio Randomizado Argentino de Angioplastia vs Cirugia II], and meta-analyses of these trails1,2⇓) and those in whom medical therapy is judged to be a reasonable choice. The latter list is short—RITA-2 [Second Randomized Intervention Treatment of Angina]3 and the awaited COURAGE [Clinical Outcomes Utilizing Revascularization and Aggressive Drug Evaluation]4 and BARI 2D [Bypass Angioplasty Revascularization Investigation 2 Diabetes]5 trials. Article p 1082 An assumption is made that patient groups can be identified that will be suitable candidates either for equipoise between 2 revascularization choices or for medical therapy versus revascularization. The study by Hueb et al6 in this issue of Circulation enrolled patients, most of whom would have been eligible for percutaneous coronary intervention (PCI) versus coronary artery bypass graft (CABG) trials, to 3 arms including medical therapy only. Eligible patients had multivessel coronary artery disease (3 vessels, 58%; 2 vessels, 42%), and the left anterior descending artery was involved in 92% of the patients. Therefore, these patients seem …