Role Of Imaging In Follow-up Research Articles

Chronic Pulmonary Manifestations of COVID-19 Infection: Imaging Evaluation.

This case presents a patient with severe COVID-19 pneumonia requiring intensive care unit admission and a prolonged hospital stay. The infection resulted in long-term morbidity, functional decline, and abnormal chest CT findings. The mechanisms for long-term lung injury after COVID-19 infection, imaging appearances, and the role of imaging in follow-up are discussed.

RAPIDLY RESOLVING LUNG MASS: BETTER SAFE THAN SORRY

RAPIDLY RESOLVING LUNG MASS: BETTER SAFE THAN SORRY

Imaging in large-vessel vasculitis

Imaging has recently been acknowledged as at least equivalent to histology for confirming large-vessel vasculitis in the recommendations of scientific societies. Many studies have been recently published on the use of ultrasound, magnetic resonance imaging (MRI), computed tomography (CT) and fluorodeoxyglucose (FDG) positron emission tomography (PET) in giant cell arteritis and Takayasu arteritis. Ultrasound, MRI and CT show concentric, arterial wall thickening in vasculitis. PET demonstrates enhanced FDG uptake of inflamed artery walls due to increased glucose metabolism. Ultrasound is particularly useful for smaller arteries like the temporal arteries due to its high resolution. MRI and PET/CT provide an excellent overview particularly on extracranial arteries. However, ultrasound can also detect extracranial vasculitis while PET/CT may delineate vasculitis in temporal arteries. The diagnosis needs to be confirmed without delay as the sensitivity of imaging decreases with treatment. Ongoing studies are evaluating the role of imaging for follow-up.

The correlation between follow-up MRI findings and laboratory results in pyogenic spondylodiscitis

BackgroundAlthough MRI is the gold-standard imaging method in the diagnosis of spondylodiscitis, role of follow-up imaging is debated and there can be discrepancies with regard to the significance of bony or soft tissue responses to treatment. Purpose of our study is to test whether the MRI changes on follow-up imaging correlate with laboratory findings of treatment response.MethodsA total of 48 patients with pyogenic spondylodiscitis who underwent baseline and follow-up MRI were retrospectively reviewed. The extent of bone marrow edema, paravertebral soft tissue inflammation, and disc height were compared on baseline and follow-up MRIs with the C-reactive protein (CRP) and erythrocyte sedimentation rate (ESR) levels obtained from the medical records at baseline and on follow-up. Relationships between the MRI and laboratory changes were analyzed using the Spearmann correlation test.ResultsThe mean MRI follow-up period was 42.25 days. Based on the CRP (resolved: n = 19, resolving: n = 19, and aggravated: n = 10), there was significant correlation between the laboratory results and the changes in the bone and soft tissues (p < 0.01, both). The correlation was best with soft tissue changes (rho: 0.48) followed by bony changes (rho: 0.41). Based on the ESR (resolved: n = 8, resolving: n = 22, and worsened: n = 18), the correlation was stronger with bone changes (rho: 0.45, p < 0.01) than it was with soft tissue changes (rho: 0.39, p = 0.01).ConclusionFollow-up MRI findings of pyogenic spondylodiscitis show variable tissue responses. CRP was best correlated with soft tissue changes, while ESR showed the best association with bony changes.

Risk factors for central venous catheter-related thrombosis in children: a retrospective analysis.

Central venous catheter (CVC) placement is associated with increased risk of thrombosis in the paediatric population, particularly in relation to the type of catheter and the manner of its insertion. Here, we investigate risk factors associated with CVC-related thrombosis in children, with particular emphasis on positioning of the catheter tip. Patients aged 0-18 who underwent at least one CVC placement from 2008 to 2013 at a single centre with a subsequent follow-up echocardiogram were included for a total of 104 patients and 147 lines. Data on clinical and catheter-related risk factors were collected from patient charts. Statistical analysis using Pearson's χ tests, independent samples t-test, and odds ratios were used to assess potential risk factors for thrombosis. Neither insertion site (subclavian vein or otherwise), left- vs. right-sided insertion, nor catheter type were significant risk factors for thrombosis. There were no thrombotic events reported at the superior vena cava (SVC)-right atrium junction and no significant differences in thrombotic risk with initial tip placement in the SVC-right atrium junction vs. the SVC, right atrium, or inferior vena cava. Acute lymphoblastic leukaemia was a major clinical risk factor for thrombosis. Tip movement was common and may have been an important factor in the development of CVC-related thrombi. Prospective studies can yield insight into the role of follow-up imaging in the prevention of catheter-related thrombosis in children.

Role of imaging in follow-up after radical cystectomy

Role of imaging in follow-up after radical cystectomy

(ii) The role of imaging in follow-up of newly introduced implants

A wide variety of orthopaedic implants is in clinical use and many new devices are brought to the market each year. The vast majority of these devices have no published clinical data. The concept of phased introduction has been developed. The use of radiostereometry and cross-sectional imaging in the follow-up and phased introduction of new orthopaedic implants is discussed.

E-030 Initial hemorrhage pattern affects utility of repeat angiography following negative initial angiogram for non-traumatic subarachnoid hemorrhage

IntroductionAngiography is usually performed in the work-up of patients with spontaneous subarachnoid hemorrhage (SAH). If the angiogram is negative, the role of follow-up imaging is less clear, and this role...

Aneurysms of the ascending aorta and arch: the role of imaging in diagnosis and surgical management

Thoracic aortic aneurysms tend to be asymptomatic and were previously often diagnosed only after a complication such as dissection or rupture occurred. Better imaging techniques and an increase in the use of cross-sectional imaging has led to an increase in the diagnosis of aortic aneurysms, which has allowed for elective treatment prior to the development of a complication. The location, size and etiology of an aneurysm all impact the clinical outcomes and these factors are used to determine the appropriate timing of surgical replacement. Surgeons often rely on the information obtained from preoperative imaging to determine when to intervene and what type of procedure will be necessary, making it important for the radiologist to understand these issues in order to provide the necessary information. Postoperative imaging after surgical replacement of the aorta is also important, as there are some common findings that occur in this patient population that can impact how they are treated. The purpose of this article is to review the etiology and associated findings of aneurysms of the ascending aorta and arch, with a focus on how computed tomography angiography and magnetic resonance angiography findings are used to determine the appropriate timing for elective replacement and the type of surgical procedure, as well as the role of follow-up imaging. This will include a review of the most commonly performed types of surgical procedures, to provide an understanding of how the findings of preoperative imaging studies impact what the surgeon does in the operating room, as well as the expected findings of postoperative imaging studies.

P5 Vaccination as a triggering agent for the development of rheumatoid arthritis—a case report

Imaging has recently been acknowledged as at least equivalent to histology for confirming large-vessel vasculitis in the recommendations of scientific societies. Many studies have been recently published on the use of ultrasound, magnetic resonance imaging (MRI), computed tomography (CT) and fluorodeoxyglucose (FDG) positron emission tomography (PET) in giant cell arteritis and Takayasu arteritis. Ultrasound, MRI and CT show concentric, arterial wall thickening in vasculitis. PET demonstrates enhanced FDG uptake of inflamed artery walls due to increased glucose metabolism. Ultrasound is particularly useful for smaller arteries like the temporal arteries due to its high resolution. MRI and PET/CT provide an excellent overview particularly on extracranial arteries. However, ultrasound can also detect extracranial vasculitis while PET/CT may delineate vasculitis in temporal arteries. The diagnosis needs to be confirmed without delay as the sensitivity of imaging decreases with treatment. Ongoing studies are evaluating the role of imaging for follow-up.

Traitement de l’obésité morbide par anneau gastrique ajustable : un suivi clinique et radiologique

Purpose To evaluate the role of imaging for follow-up after treatment of morbid obesity by laparoscopic adjustable gastric banding (LAGB). Patients and methods Since 1996, more than 1,000 patients underwent gastric banding using 5 different types of devices. Our experience is based on a retrospective study (from September 1996 to September 2002) concerning 663 consecutive patients who underwent LAGB: 114 Lapband system (LB) and 549 Swedish adjustable gastric banding (SAGB). Upper gastrointestinal series were performed within 24-48 hours after surgery in all patients. Radiological examination was also used to detect complications and to adjust gastric band. Results The five types of gastric band are easily identified on plain films. Early and late complications are illustrated: pouch dilatation, slippage, band migration, rotation of the port, and system disconnection. Radiological criteria for adjustment of gastric band are explained on the basis of barium studies performed before and after any modification of the stoma size. Conclusion In patients treated with LAGB for morbid obesity, radiology plays an important role in evaluating early and late complications.