scholarly journals Validation of color Doppler ultrasound and computed tomography in the radiologic assessment of non-malignant acute splanchnic vein thrombosis

PLoS ONE ◽  
2021 ◽  
Vol 16 (12) ◽  
pp. e0261499
Author(s):  
Lukas Sturm ◽  
Dominik Bettinger ◽  
Christoph Klinger ◽  
Tobias Krauss ◽  
Hannes Engel ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Portal Vein ◽  
Doppler Ultrasound ◽  
Gold Standard ◽  
Color Doppler ◽  
Color Doppler Ultrasound ◽  
Splanchnic Vein Thrombosis ◽  
Vein Thrombosis ◽  
Cohen's Kappa ◽  
Radiologic Assessment

Introduction International guidelines propose color Doppler ultrasound (CDUS) and contrast-enhanced computed tomography (CT) as primary imaging techniques in the diagnosis of acute splanchnic vein thrombosis. However, their reliability in this context is poorly investigated. Therefore, the aim of our study was to validate CDUS and CT in the radiologic assessment of acute splanchnic vein thrombosis, using direct transjugular spleno-portography as gold standard. Materials and methods 49 patients with non-malignant acute splanchnic vein thrombosis were included in a retrospective, multicenter analysis. The thrombosis’ extent in five regions of the splanchnic venous system (right and left intrahepatic portal vein, main trunk of the portal vein, splenic vein, superior mesenteric vein) and the degree of thrombosis (patent, partial thrombosis, complete thrombosis) were assessed by portography, CDUS and CT in a blinded manner. Reliability of CDUS and CT with regard to portography as gold standard was analyzed by calculating Cohen’s kappa. Results Results of CDUS and CT were consistent with portography in 76.6% and 78.4% of examinations, respectively. Cohen’s kappa demonstrated that CDUS and CT delivered almost equally reliable results with regard to the portographic gold standard (k = 0.634 [p < 0.001] vs. k = 0.644 [p < 0.001]). In case of findings non-consistent with portography there was no clear trend to over- or underestimation of the degree of thrombosis in both CDUS (60.0% vs. 40.0%) and CT (59.5% vs. 40.5%). Conclusions CDUS and CT are equally reliable tools in the radiologic assessment of non-malignant acute splanchnic vein thrombosis.

scholarly journals Hemodynamic Changes in Portal Vein and Frequencies of Acute and Chronic Portal Vein Thrombosis in Pediatric Patients Presenting with Hematemesis

2016 ◽  
Vol 22 (4) ◽  
Author(s):  
Ahmad Imran ◽  
Amna Tariq ◽  
Abid Ali Qureshi
Keyword(s):  
Portal Vein ◽  
Portal Vein Thrombosis ◽  
Doppler Ultrasound ◽  
Pediatric Patients ◽  
Color Doppler ◽  
Cost Effective ◽  
Color Doppler Ultrasound ◽  
Diagnostic Modality ◽  
Cross Sectional ◽  
Vein Thrombosis

<p><strong>Objective:</strong>  The objective of the study is to calculate the frequency of portal vein thrombosis in pediatric patients presenting with hematemesis and to estimate the frequency of acute and chronic portal vein thrombosis in these cases.</p><p><strong>Patients and Methods:</strong><strong>  </strong>Pediatric patients of 1 – 15 years of age of either sex, presenting to emergency or gastroenterology department with complaint of hematemesis were included. Informed consent was taken from parents/guardians. This is a Descriptive cross sectional study conducted in department of pediatric radiology, Children Hospital and Institute of child Health Lahore from 11-12-2012 to 10-6-2013. Doppler ultrasound of these patients was performed at Core Vision pro SSA 350-A Doppler machine (Toshiba, Japan) using standard imaging protocols. The data was analyzed using SPSS version 17.0 (SPSS Inc., IL, Chicago, USA)</p><p><strong>Results:</strong><strong>  </strong>In this study, 41% (n = 41) between 1 – 5 years, 38% (n = 38) between 6 – 10 years and only 21% (n = 21) between 11 – 15 years of age, 64%( n = 64) were male and remaining 36% (n = 36) were females, frequency of portal vein thrombosis in pediatric patients presenting with hematemesis reveals in 37% (n = 37) while 63% (n = 63) had no findings of PVT, frequency of acute and chronic forms in patients positive for portal vein thrombosis was 40.54% (n = 15) had acute and 59.46% (n = 22) had chronic portal vein thrombosis.</p><p><strong>Conclusion:</strong><strong>  </strong>We concluded that the frequency of portal vein thrombosis in pediatric patients presenting with hematemesis and frequency of acute and chronic forms in patients positive for portal vein thrombosis is in accordance with other studies while color Doppler ultrasound is a useful diagnostic modality being noninvasive and cost effective.</p>

Color Doppler Ultrasound versus Computed Tomography Angiography for Preoperative Anterolateral Thigh Flap Perforator Imaging: A Systematic Review and Meta-Analysis

2021 ◽  
Author(s):  
Reece Moore ◽  
Donna Mullner ◽  
Georgina Nichols ◽  
Isis Scomacao ◽  
Fernando Herrera
Keyword(s):  
Computed Tomography ◽  
Doppler Ultrasound ◽  
Computed Tomography Angiography ◽  
False Positive ◽  
Color Doppler ◽  
Color Doppler Ultrasound ◽  
Preoperative Imaging ◽  
Anterolateral Thigh Flap ◽  
Anterolateral Thigh ◽  
Alt Flap

Abstract Background The anterolateral thigh (ALT) perforator flap is a commonly used flap with a predictable, though often variable, perforator anatomy. Preoperative imaging with color Doppler ultrasound (CDU) and computed tomography angiography (CTA) of ALT flap perforators can be a useful tool for flap planning. This study provides a complete review and analysis of the relevant preoperative ALT imaging literature. Methods Studies related to preoperative CDU and CTA imaging were reviewed, and information related to imaging method, sensitivity, false-positive rates, and perforator course identification (musculocutaneous vs. septocutaneous) were analyzed. Results A total of 23 studies related to preoperative ALT flap CDU and CTA imaging were included for review and analysis. Intraoperative perforator identification was compared with those found preoperatively using CDU (n = 672) and CTA (n = 531). Perforator identification sensitivity for CDU was 95.3% (95% CI: 90.9–97.6%) compared with the CTA sensitivity of 90.4% (95% confidence interval [CI]: 74.4–96.9%). The false-positive rate for CDU was 2.8% (95% CI: 1.1–4.5%) compared with 2.4% (95% CI: 0.7–4.1%) for CTA. Accuracy of perforator course identification was 95.5% (95% CI: 93.6–99.2%) for CDU and 96.9% (95% CI: 92.7–100.1%) for CTA. Conclusion CDU provides the reconstructive surgeon with greater preoperative perforator imaging sensitivity compared with CTA; however, false-positive rates are marginally higher with preoperative CDU. Preoperative imaging for ALT flap design is an effective tool, and the reconstructive surgeon should consider the data presented here when selecting a flap imaging modality.

scholarly journals Renal transplant complications, role of resistive index on Color Doppler ultrasound

2016 ◽  
Vol 12 (1) ◽  
Author(s):  
Afshan Qureshi ◽  
Sadaf Batool ◽  
Asim Shaukat ◽  
Tahir Qadeer Khan ◽  
Khawaja Khurshid Ahmad ◽  
...  
Keyword(s):  
Doppler Ultrasound ◽  
Color Doppler ◽  
Resistive Index ◽  
Color Doppler Ultrasound ◽  
Renal Vein Thrombosis ◽  
Vein Thrombosis ◽  
Hydronephrotic Kidney ◽  
Transplant Complications ◽  
Transplant Procedure

We evaluated 50 patients who had renal transplants and were sent for Doppler Ultrasound for complications, after the transplant procedure. Ages of the patients ranged from 20 to 65 years, 39 were male and 11 were female. In inclusions only first month post op patients were included and only those patients were considered who had some sort of complications on ultrasound at some stage of the follow up.Following complications were noticed: Diminished corticomedullary demarcations, increased echogenicity with raised R I (20 pt). Perinephric collections other than haematoma (13 pt). Perinephric haematoma (06 pt). Obstructed transplanted kidney ( 05 pt). Diminished arterial vascularity of the kidney (04 pt) Renal vein thrombosis (02 pt). RI was found to be raised in increased echogenicity, obstructed hydronephrotic kidney, diminished arterial supply and was disturbed in RVT.

scholarly journals Color Doppler ultrasound diagnosis of intrarenal vein thrombosis

Medicine ◽  
2018 ◽  
Vol 97 (13) ◽  
pp. e0284
Author(s):  
Yixiu Zhang ◽  
Ying Wang ◽  
Jianchu Li ◽  
Sheng Cai
Keyword(s):  
Doppler Ultrasound ◽  
Color Doppler ◽  
Color Doppler Ultrasound ◽  
Ultrasound Diagnosis ◽  
Vein Thrombosis
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