Value Of Color Doppler Ultrasonography Research Articles

Evaluation of acute renal artery thrombosis or embolism with color Doppler sonography

Objective This study aimed to evaluate the value of color Doppler sonography (CDS) in the diagnosis of acute renal artery thrombosis or embolism (ARATE). Methods We retrospectively reviewed the CDS findings of 10 patients with ARATE, which were confirmed by the clinical data and digital subtraction angiography or computed tomography ( n=8) or by the results of surgical pathology ( n=2). We analyzed the echogenicity and size of the kidneys on gray-scale images and blood flow parameters of the main renal artery, renal vein, and the intrarenal artery (segmental or interlobar artery) of the kidneys on CDS in all cases. Results Four patients with acute main renal artery thrombosis (two transplanted kidneys and two native kidneys) correctly detected by CDS underwent emergency thrombolysis via renal artery. The results of CDS in six native kidneys with renal artery embolism included two cases with satisfactory CDS demonstrations, two cases with undetermined CDS findings, one case interpreted as severe renal artery stenosis, and one misdiagnosed case. Conclusions CDS is a useful imaging tool in the diagnosis of large renal infarcts caused by thrombosis or embolism in the main renal artery. However, small infarcts, which need other imaging modalities for further evaluation and confirmation, may be neglected by CDS.

Extracranial and intracranial vertebral artery dissection: Long‐term clinical and duplex sonographic follow‐up

To determine the value of color Doppler sonography (CDUS) in the diagnosis and follow-up of patients with extracranial and intracranial vertebral artery (VA) dissection. Thirty-three patients aged 42 +/- 12 years with 40 VADS confirmed via digital subtraction angiography (DSA) (n = 37) and magnetic resonance angiography (MRA) (n = 3) were included in the study. All patients were investigated with extracranial CDUS and transcranial CDUS (TCCDUS) over a mean +/- SD follow-up period of 42 +/- 24 months and occurrence of new ischemic symptoms was assessed. Sonographic results were compared with initial and follow-up angiographic results. At presentation, 24/33 (73%) patients had suffered an ischemic stroke, 5/33 (15%) had a transient ischemic attack (TIA), and 4/33 (12%) were asymptomatic. Two patients had a recurrent vertebrobasilar TIA; there was no recurrent stroke. The initial DSA findings consisted of 14 stenoses, 20 tapered occlusions, and 6 pseudoaneurysms. During follow-up, 63% of the vessels recanalized. Sonographic findings were consistent with angiographic findings in 80% at the initial examination and in 86% during follow-up. The main reason for discordant results was the failure of CDUS to detect pseudoaneurysms. No recurrence occurred in the vertebral arteries (VA), but 1 patient had an asymptomatic carotid artery dissection during follow-up. Recurrent TIA or stroke after VAD appears to be extremely rare, independent of recanalization or persistent occlusion of the affected artery. CDUS and TCCDUS provide reliable follow-up of VAD in all patients presenting with stenosis or occlusion, but do not allow for detection of pseudoaneurysms of the VA.

1455: Clinical Value of Color Doppler Ultrasonography Under Guidance of PCNL to Avoide Injuring the Renal Vessels

You have accessJournal of UrologyModerated Poster 44, Tuesday, May 22, 2007, 1:00 - 3:00 pm1 Apr 20071455: Clinical Value of Color Doppler Ultrasonography Under Guidance of PCNL to Avoide Injuring the Renal Vessels Xin Gao, Min-Hua Lu, Cui-Lan Xiao, Xiang-Fu Zhou, and Jian-Guang Qiu Xin GaoXin Gao More articles by this author , Min-Hua LuMin-Hua Lu More articles by this author , Cui-Lan XiaoCui-Lan Xiao More articles by this author , Xiang-Fu ZhouXiang-Fu Zhou More articles by this author , and Jian-Guang QiuJian-Guang Qiu More articles by this author View All Author Informationhttps://doi.org/10.1016/S0022-5347(18)31656-2AboutPDF ToolsAdd to favoritesDownload CitationsTrack CitationsPermissionsReprints ShareFacebookLinked InTwitterEmail "1455: Clinical Value of Color Doppler Ultrasonography Under Guidance of PCNL to Avoide Injuring the Renal Vessels." The Journal of Urology, 177(4S), p. 480 © 2016 by American Urological AssociationFiguresReferencesRelatedDetails Volume 177Issue 4SApril 2007Page: 480 Advertisement Copyright & Permissions© 2016 by American Urological AssociationMetricsAuthor Information Xin Gao More articles by this author Min-Hua Lu More articles by this author Cui-Lan Xiao More articles by this author Xiang-Fu Zhou More articles by this author Jian-Guang Qiu More articles by this author Expand All Advertisement PDF downloadLoading ...

Diagnostic Value of Color Doppler Ultrasonography for Endometriosis to Abdominal Wall Scar

目的 探讨彩色多普勒超声在腹壁切口处子宫内膜异位中的诊断价值.方法 对10例剖宫产后经病理证实的子宫内膜异位症患者进行回顾性分析.结果 10例患者中3例合并子宫瘢痕处内膜异位,二维均表现为低回声团、边界较模糊,内见少许液性暗区;周边及内部探及少许点棒状血流信号,频谱显示为低速高阻动脉血流.结论 彩色多普勒超声在腹壁切口处内膜异位的诊断中具有一定的价值,当合并瘢痕处内膜异位时,具有较高的鉴别诊断价值。

Value of color Doppler ultrasonography in the evaluation of orbital vascular flow in end-stage renal disease patients undergoing hemodialysis

To evaluate choroidal and retinal vascular flow dynamics by means of color Doppler ultrasonography in patients with end-stage renal disease undergoing hemodialysis and to compare these findings with healthy controls. Color Doppler ultrasonography and spectral analysis of nasal and temporal posterior ciliary and central retinal artery flow of both eyes were performed in 20 patients (40 eyes) and 22 controls (44 eyes) to assess peak systolic flow velocity, end-diastolic flow velocity, and resistive indices (RI). Patients with hypertension, diabetes mellitus, and any cardiac pathology were not included in the study. A general ophthalmologic examination was performed in all patients and controls. The average peak-systolic and end-diastolic blood flow velocities of nasal (12.88 +/- 4.91/6.88 +/- 3.26) and temporal (15.22 +/- 9.59/6.41 +/- 3.97) posterior ciliary artery and central retinal artery (14.94 +/- 8.38/6.7 +/- 4.13) in patients were significantly higher than the corresponding values of the controls. The RI values of nasal (0.52 +/- 0.10) and temporal (0.58 +/- 0.12) posterior ciliary artery and central retinal artery (0.55 +/- 0.11) in patients with end-stage renal disease undergoing hemodialysis were significantly lower than in the controls. Choroidal and retinal blood flow velocities are higher and RI values for all three vessels lower in patients with end-stage renal disease undergoing hemodialysis compared to healthy controls. These alterations may be related to either increased choroidal blood flow or vasoconstriction of the proximal vessels.

Prediction of Relapse after Antithyroid Drug Therapy of Graves' Disease: Value of Color Doppler Sonography

Opinions differ regarding the indications for antithyroid drugs, radioiodine and surgery in patients with Graves' disease because the likelihood of long-term remission after medical treatment cannot be predicted. The aim of this study was to assess the value of quantifying thyroid blood flow in an attempt to predict outcome following withdrawal of antithyroid drug therapy. Spectral Doppler recordings were obtained from the thyroid arteries in 24 patients with Graves' disease at the time of diagnosis. Thyroid blood flow levels measured at the time of diagnosis of Graves' disease were correlated with outcome following withdrawal of medical treatment (mean duration of treatment: 14 months). Clinical follow-up for at least 18 months (range: 18 - 39 months) after antithyroid drug withdrawal was possible in 13 patients (12 women). Mean peak systolic velocity and volume flow rate values as well as thyroid volume measured at the time of diagnosis were significantly higher (139 cm/s, SD 46; 195 ml/min, SD 170; 52 ml, SD 18) in patients who relapsed after drug treatment compared with patients in remission (71 cm/s, SD 27; 67 ml/min, SD 61; 25 ml, SD 13). The correlation between thyroid blood flow measurements and thyroid volume was high (r = 0.79 - 0.96). Recurrence of disease could be predicted with a sensitivity of 71 % and a specificity of 100 % based on thyroid blood flow measurements. This preliminary data suggest that quantification of thyroid blood flow by means of Doppler sonography might be a useful tool to predict the outcome of Graves' disease following withdrawal of medical treatment and could be helpful in finding the adequate kind of therapy.

The value of colour Doppler ultrasonography for identification of crossing vessels in children with pelvi-ureteric junction obstruction.

Pelvi-ureteric junction (PUJ) obstruction is caused by the presence of an aperistaltic dysplastic segment at the PUJ. Besides this intrinsic aetiology, extrinsic abnormalities, mainly crossing vessels, may be an associated factor. To determine the reliability of colour Doppler US in the detection of crossing vessels in children with surgically proven PUJ obstruction. Forty-eight patients (50 kidneys) with PUJ obstruction, surgically treated from 1998 to 2001, were prospectively studied by colour Doppler US prior to open pyeloplasty. There were 33 boys and 15 girls (age 2 months-12 years; median 3.5 years). There were 24 right kidneys and 26 left kidneys. The indication for surgery was according to the usual criteria. The crossing vessel was considered as present when depicted on colour Doppler US at the PUJ. Colour Doppler assessment of the crossing vessels was correct in all but two patients. At surgery, a crossing vessel was found in 14 kidneys (i.e. 28%). Colour Doppler US results were correlated with intra-operative findings in 50 renal units. Surgically proven vessels in 14 kidneys were identified by colour Doppler US in 13, and not shown in 1. In PUJ obstruction without a crossing vessel ( n=36), US findings were concordant in 26, discordant in 8 and inconclusive in 2 (with kidney malrotation) cases. Colour Doppler US had a sensitivity (Se), specificity (Sp), positive predictive value (PPV), negative predictive value (NPV), and accuracy of 92.8%, 76.5%, 62%, 96.3% and 78%, respectively. The reliability of colour Doppler US was greatly improved with the increasing experience of the sonographer, as shown by the results of the last 2 years (26 kidneys):Se=100%, Sp=87.5%, PPV=81.8%, NPV=100%, accuracy=88.5%. Colour Doppler US is reliable in the detection of crossing vessels at the PUJ.

Color Doppler sonography in hypothyroidism

Background: The value of color Doppler sonography in thyroid disease continues to be a matter of debate. Over the past few years, several studies have proved unable to yield unequivocal results. Only a few studies concerning color Doppler sonography in patients with hypothyroidism have been published. Methods: 89 patients with hypothyroidism have been evaluated. They were examined clinically; laboratory tests on thyroid function and color Doppler sonography have been performed. The color flow distribution and intensity were estimated and the fastest flow velocity (PSV) detectable with a pw-doppler was registered. The color pattern was graded from 0 to III as has been described by others and the color Doppler findings were then correlated to both the clinical picture and the laboratory results. Results: 56 of the 89 hypothyroid patients showed pattern 0 with a PSV of 22 cm/s. In 33 patients different degrees of increased parenchymal color could be found with a concordant PSV: 16 patients showed pattern I with a PSV of 39 cm/s; 11 showed pattern II with PSV 58 cm/s, and 6 showed pattern III with PSV 63 cm/s. Regarding the corresponding clinical and laboratory variables, there was a very close correlation between color intensity and anti-Tg/anti-TPO antibody levels: pattern 0: anti-Tg 474 IU/ml, anti-TPO-Ab 810 IU/ml; pattern I: 1053/1733; pattern II: 1774/2432; pattern III: 1951/2633. Some correlation could also be found for the TSH values and the calculated volume of the thyroid gland, whereas the duration of hypothyroidism showed an inverse correlation to color intensity. (Pattern 0: TSH 3.1 mE/ml, volume 9.2 ml, duration 43 months; pattern I: 4.2 mE/l, 15.7 ml, 24 mos.; pattern II: 11.5 mE/l, 22.3 ml, 16 mos.; pattern III: 38.2 mE/l, 34.3 ml, 10 mos, respectively). Conclusions: The color Doppler pattern of intense hypervascularization of the thyroid gland formerly attributed only to the hyperthyroid state of active Graves’ Disease can also be seen in hypothyroidism. Our data support the concept that the color flow appearance is not the result of stimulated thyroid hormone production, but a measure of the activity of an autoimmune process.

Transcatheter embolization of splanchnic aneurysms/pseudoaneurysms: early imaging allows detection of incomplete procedure.

The purpose of this work is to discuss results of transcatheter embolization for splanchnic aneurysms/pseudoaneurysms and to evaluate the value of color Doppler ultrasonography and CT within the first week after the procedure. Retrospective review of selected patients from our database with splanchnic artery aneurysms and pseudoaneurysms treated by transcatheter embolization was conducted. Patients were selected and treated in the hospital of Edouard Herriot (Lyon, France). Conventional angiography was performed by the transfemoral route in all patients. We used association of steel coils with or without hemostatic sponge after selective catheterization of the parent vessel for the embolization of the aneurysm. Color flow imaging on ultrasonography and CT scan with contrast medium injection were performed to analyze feeding arteries, treated aneurysm, and presence of complications within the first week after embolization. Eighteen transcatheter embolizations were performed in 14 patients. A total of 25 ultrasonograms and/or CT scans were performed within the first week after the embolization procedure. Complete embolization in one attempt was achieved in eight patients. Imaging follow-up confirmed the absence of recurrence, recanalization, or severe complication for these patients. In one patient, a CT scan with injection of contrast medium done after the first complete procedure of embolization for mycotic pseudoaneurysm identified new aneurysms. Further embolization was done to complete the procedure. In the remaining four patients, large aneurysms were identified, with failure of transcatheter embolization. Follow-up imaging confirmed either the incomplete packing of the aneurysm or recanalization by a new feeding artery. Imaging follow-up with ultrasonography and CT scan provides significant information after transcatheter embolization. We confirm that large visceral aneurysms are difficult to treat by embolization, with failed procedures in our series.

WHAT NONRESPONSE TO INTRACAVERNOUS INJECTION REALLY INDICATES: A DETERMINATION BY QUANTITATIVE ANALYSIS

In addition to its usefulness as a therapeutic modality, intracavernous injection may also be done in a diagnostic capacity. While a good response to an intracavernous injection test rules out venous leakage, a failed erectile response to the test in the office setting may not be completely representative of the patient erectile state. We determined by quantitative analysis the likely significance of failure to respond to intracavernous injection testing. Patients evaluated with the standard erectile dysfunction assessment at our andrology clinic between 1996 and 1999 were included in analysis. All 122 patients who did not meet study exclusion criteria underwent a test dose of intracavernous injection with papaverine, phentolamine and prostaglandin E1. Regardless of the response or lack of response to the test the men then underwent nocturnal penile tumescence testing, penile blood flow study and re-dose pharmacocavernosography. Results of these adjunctive tests were compared to the outcome of a papaverine, phentolamine and prostaglandin E1 intracavernous injection test by quantitative analysis. A total of 87 patients failed to respond to the test dose. Average age of the nonresponders versus responders was 46.8 versus 33.8 years. The duration of erectile dysfunction in nonresponders versus responders was 31.0 versus 13.7 months. Poor intracavernous injection responders required an average of 1.9-fold greater induction flow and 6-fold greater maintenance flow than good responders. Receiver operator characteristics (ROC) curve analysis revealed that the best predictors of the intracavernous injection test response were erectile dysfunction duration (ROC 0.99), patient age (ROC 0.87), maintenance flow (ROC 0.86), pressure loss (ROC 0.83) and resistive index (ROC 0.82). The ROC area for peak systolic velocity was 0.69. Our results indicate that age and erectile dysfunction duration alone are the most important variables affecting the results of an intracavernous injection test. However, in patients older than 40 years with a greater than 2-year history of erectile dysfunction failure to respond to intracavernous injection testing is most closely associated with venous insufficiency, as evidenced by the high ROC values for variables indicative of venous insufficiency, namely maintenance flow, pressure loss and the resistive index. Therefore, nonresponse to an office intracavernous injection test in an older patient with erectile dysfunction of long duration is most likely due to venous leakage. If only 1 confirmatory test is possible, cavernosometry provides the most information.

Groin hernias in adults: Value of color doppler sonography in their classification

We assessed the abilities of color Doppler and power Doppler sonography to distinguish among types of groin hernias by demonstrating the inferior epigastric artery (IEA) and its relationship with the hernia sac. Nineteen consecutive patients (14 men and 5 women), clinically diagnosed as having groin hernias and scheduled to undergo herniorrhaphy, were prospectively enrolled in this study. Ultrasound examinations were performed preoperatively with a 6-12-MHz linear-array transducer. The IEA was identified, if possible, and its relationship to the hernia sac assessed. The sonographic diagnoses were compared with the operative findings. There were 15 indirect inguinal hernias, 4 direct inguinal hernias, and 1 femoral hernia; 1 patient had bilateral inguinal hernias (indirect and direct). In 18 (90%) of 20 hernia cases, the trunk segment of the IEA could be visualized. In 11 (55%) of 20 hernia cases, the origin segment of the IEA could be visualized and its relationship with the hernia sac assessed. In 9 (82%) of the 11 hernia cases, hernia types were correctly diagnosed by sonography. The overall accuracy of sonography for diagnosing the type of hernia was 45% (9 of 20 hernias). Color Doppler sonography can accurately differentiate types of groin hernias if the origin segment of the IEA and the hernia sac can be visualized simultaneously. However, color Doppler sonography sometimes failed to visualize this segment.

The Value of Colour Dopler Ultrsonography in the Diagnosis of Endometnal Cancer

Objective To evaluated the value of Colour Doppler ultrasonography in the diagnosis of endometrial cancer. Methods The thickness of endometrium was measured in 32 women patients with transvaginal bleeding ang the utrasonographic feature of the endometrium observed.The blood resistance indexes and the blood velocity of diseased region user also searched by colour Doppler ultrasonography. Results Endometnal cancer was classified as three types:diffusion,localization,and polypase.blood in diseased region was great and resistance indexes 0.4.27patients were diagnosed as endometrial cancer,but 5 patients were misdiagnosed by compared with patholgicod measurement The diagnistuc conincid ental rate was 84.37%.Conclusion Colour Doppler ultrasongraphy has a certain clincal value in diagnosis of endmetrial cancer.

Prognosis of Ischemic Colitis

The objective of this study was to compare the value of color Doppler sonography with early clinical and laboratory findings in determining the prognosis of patients with ischemic colitis. We reviewed the early clinical, laboratory, and color Doppler sonographic data of 24 patients with ischemic colitis. The patients were divided into two groups on the basis of their outcome. The first group comprised the patients with transient ischemia who recovered uneventfully, and the second group included the patients who needed surgery because of symptomatic transmural colic gangrene or colic stricture. Clinical data and laboratory values were compared with color Doppler sonographic findings including colic wall thickness, presence of stratification, and arterial flow in the bowel wall. At univariate analysis, increased age (p = 0.007), leukocyte count (p = 0.030), lactate dehydrogenase level (p = 0.030), blood lactate level (p = 0.041), and absence of vascular flow in the colic wall (p<0.001) were significantly related to complicated ischemic colitis. At multivariate analysis, absence of arterial flow was the only significant predictor of complicated ischemic colitis (p = 0.002), with a sensitivity of 82%, a specificity of 92%, a positive predictive value of 90%, and a negative predictive value of 86%. Absence of arterial flow in the wall of the ischemic colon on initial color Doppler sonography is suggestive of an unfavorable outcome and is more closely associated with outcome than early clinical and laboratory findings.

Color Doppler sonography in the diagnosis of acute scrotum in boys.

Evaluation of acute painful scrotum is difficult and imaging studies have been reported to be unreliable in detecting testicular torsion. In order to assess the value of color Doppler sonography in acute scrotal disease, the authors reviewed 65 consecutive boys, ranging in age from 1 to 16 years. The study demonstrated absent or diminished flow signals in 11 patients. All of them had a surgical intervention, and in 8 of them, a testicular torsion was confirmed. 54 boys had a symmetrical or increased flow signal on the affected side. Just 5 boys among this group underwent surgical exploration. On follow up, none of the 54 patients with good flow signals proved to have a testicular torsion. Sonography and color Doppler sonography helped to differentiate epididymitis and torsion of a testicular appendage as a basis for further investigations and correct conservative therapy. In detecting a testicular torsion, color Doppler sonography yielded a positive predictive value of 73%, a sensitivity of 100% and a negative predictive value of 100%. We therefore conclude, that Doppler sonography can reliably rule out testicular torsion so that routine scrotal exploration in cases of acute scrotum is no longer necessary. By reducing the number of emergency operations and hospitalization days, color Doppler sonography can cut down the total cost of managing acute painful scrotum in boys.

Difficult Femoral Arteriovenous Fistula in a Child

Difficult Femoral Arteriovenous Fistula in a Child

Solitary hepatic lesions with a hypoechoic rim: value of color Doppler sonography.

A hypoechoic rim around a focal liver lesion as revealed by conventional sonography may be present in malignant liver lesions as well as in benign liver lesions. This study evaluated the potential of color Doppler sonography in differentiating various focal liver lesions with a hypoechoic rim. Color Doppler sonography may be helpful in distinguishing focal nodular hyperplasia (FNH) from other focal liver lesions. The characteristic finding of blood flow within the hypoechoic rim of FNH is most likely caused by small vessel abnormalities that have previously been described for FNH.

Value of colour Doppler ultrasonography in the assessment of orbital vascular resistance in sickle cell disease

Value of colour Doppler ultrasonography in the assessment of orbital vascular resistance in sickle cell disease

Value of colour Doppler ultrasonography in the assessment of orbital vascular resistance in sickle cell disease : Aikimbaev K.S. a; Oguz M. a; Guvenc B. b; Baslamisli F. b; Kocak R. baDepartment of Radiology, Cukurova University, Balcali Hospital, Medical Faculty, Adana, Turkey bDepartment of Haematology Departments, Cukurova University, Balcali Hospital, Medical Faculty, Adana, Turkey

Value of colour Doppler ultrasonography in the assessment of orbital vascular resistance in sickle cell disease : Aikimbaev K.S. a; Oguz M. a; Guvenc B. b; Baslamisli F. b; Kocak R. baDepartment of Radiology, Cukurova University, Balcali Hospital, Medical Faculty, Adana, Turkey bDepartment of Haematology Departments, Cukurova University, Balcali Hospital, Medical Faculty, Adana, Turkey

Diagnosis of renovascular disease by intra- and extrarenal Doppler scanning

The purpose of this prospective, angiographically controlled study was to determine the diagnostic value of color Doppler sonography with two differing approaches of scanning in patients with clinical clues for renal artery stenosis (RAS). In 135 hypertensive patients peak systolic velocity in the main renal arteries and the resistive index (RI) of the intrarenal arteries were measured. The RI side-to-side-difference (delta RI) greater than 0.05 or peak systolic velocity greater than 2 m/s were used to discriminate normal from stenotic renal arteries, defined as angiographically confirmed RAS > 50%. In 88 of 135 patients 107 RAS were demonstrated by selective arteriography. Five renal artery occlusions occurred, which were all diagnosed by color Doppler sonography. Seventy-six RAS were detected by increased peak systolic velocity, and an additional 19 stenoses were identified by delta RI. The combined analysis of peak systolic velocity and delta RI resulted in a sensitivity of 89% and specificity of 92%. The positive predictive value was 92% and the negative predictive value was 88%. Our data suggest that only the combination of intra- and extrarenal scanning with color Doppler sonography represents an effective screening method for significant renal artery stenosis in hypertensive patients.

Colour Doppler ultrasonography in the diagnosis of axillary lymph node metastases in breast cancer

A prospective survey was carried out to establish the value of colour Doppler ultrasonography (CDU) in staging the axillary lymph nodes in breast cancer. One hundred lymph node dissections in 98 patients were studied. The results of CDU were compared with the results of histological examination. In this study CDU had a sensitivity of 50% and a total accuracy of 72%. These percentages are lower than reported from other centres and suggest CDU might not be a reliable investigation for evaluating axillary lymph nodes in breast cancer patients.