Research
Print page Print page
Switch language
Rigshospitalet - a part of Copenhagen University Hospital
Published

Vector Flow Imaging Compared with Digital Subtraction Angiography for Stenosis Assessment in the Superficial Femoral Artery - A Study of Vector Concentration, Velocity Ratio and Stenosis Degree Percentage

Research output: Contribution to journalJournal articleResearchpeer-review

DOI

  1. Ultrasound Curricula of Student Education in Europe: Summary of the Experience

    Research output: Contribution to journalJournal articleResearchpeer-review

  2. Endoscopic Ultrasound-Guided Drainage of a Pancreatic Pseudocyst after a Bicycle Trauma

    Research output: Contribution to journalJournal articleResearchpeer-review

  3. Pediatric Transthoracic Cardiac Vector Flow Imaging - A Preliminary Pictorial Study

    Research output: Contribution to journalJournal articleResearchpeer-review

  4. An Atypical Inguinal Hernia in a 9-Month-Old Girl - Case Report and Ultrasound Findings

    Research output: Contribution to journalJournal articleResearchpeer-review

  5. Atherosclerotic Lesions in the Superficial Femoral Artery (SFA) Characterized with Velocity Ratios using Vector Velocity Ultrasound

    Research output: Contribution to journalJournal articleResearchpeer-review

  1. Preoperative Embolization of a Solitary Fibrous Tumor Originating from External Auditory Meatus: A Case Report with Literature Review

    Research output: Contribution to journalJournal articleResearchpeer-review

  2. Gastrointestinal Applications of Iodine Quantification Using Dual-Energy CT: A Systematic Review

    Research output: Contribution to journalReviewResearchpeer-review

  3. Flow Complexity Estimation in Dysfunctional Arteriovenous Dialysis Fistulas using Vector Flow Imaging

    Research output: Contribution to journalJournal articleResearchpeer-review

View graph of relations

Purpose Stenosis of the superficial femoral artery (SFA) induces complex blood flow with increased velocities. Disease assessment is performed with Doppler ultrasound and digital subtraction angiography (DSA), but Doppler ultrasound is limited by angle dependency and DSA by ionizing radiation. An alternative is the vector flow imaging method based on transverse oscillation (TO), an angle-independent vector velocity technique using ultrasound. In this study, flow complexity and velocity measured with TO were compared with DSA for the assessment of stenosis in the SFA. Materials and Methods The vector concentration, a measure of flow complexity, and the velocity ratio obtained from the stenosis and a disease-free adjacent vessel segment, were estimated with TO in 11 patients with a total of 16 stenoses of the SFA. TO data were compared with the corresponding stenosis degree percentage obtained with DSA. Results The correlation between the vector concentration and DSA was very strong (R=0.93; p<0.001; 95% confidence interval (CI): 0.81-0.98), while only moderate for velocity ratio and DSA (R=0.50; p<0.07; 95% CI: 0.00-0.80). The correlation coefficients that were found were significantly different (p<0.005) without overlapping CI. Conclusion The study indicated that flow changes in the SFA induced by stenosis can be quantified with TO, and that stenosis grading may be improved by estimation of flow complexity instead of velocity ratio. TO is a potential diagnostic tool for the assessment of atherosclerosis and peripheral arterial disease.

Original languageEnglish
JournalUltrasound International Open
Volume5
Issue number2
Pages (from-to)E53-E59
ISSN2509-596X
DOIs
Publication statusPublished - 1 Jan 2019

    Research areas

  • digital subtraction angiography, peripheral arterial disease, vector concentration, vector flow imaging, velocity ratio

ID: 58225326