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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
medicine
Evaluation of peripheral artery stent with 64-slice multi-detector row CT angiography: Prospective comparison with digital subtraction angiography
European Journal of Radiology, Volume 75, No. 1, Year 2010
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Description
Purpose: To assess the accuracy of 64-slice multi-detector row computed tomography (MDCT) angiography in the evaluation of peripheral artery in-stent or peristent restenosis, with conventional digital subtraction angiography (DSA) as the reference standard. Materials and methods: Forty-one patients (30 men, 11 women; mean age, 69.8 ± 9.2 years) with symptomatic peripheral arterial occlusive disease after peripheral artery stenting (81 stented lesions) underwent both conventional DSA and 64-slice MDCT angiography. Each stent was classified as evaluable or unevaluable, and every stent was divided into three segments (proximal stent, stent body, and distal stent), resulting in 243 segments. For evaluation, stenosis was graded as follows: 1, none or slight stenosis (<25%); 2, mild stenosis (25-49%); 3, moderate stenosis (50-74%); 4, severe stenosis or total occlusion (≥75%). Two readers evaluated all CT angiograms with regard to narrowing of in-stent or peristent restenosis by consensus. Results were compared with findings of the DSA. Results: Of 81 stents, 62 (76.5%) were determined to be assessable. The metal artifact of the gold marker and motion artifact increased uninterpretability of the images of stents. Overall, 24 of 28 in-stent restenosis and 38 of 53 persistent restenosis were correctly detected by MDCT (85.7% and 71.7% sensitivity). In evaluable stents, 21 of 22 in-stent restenoses and 27 of 28 persistent restenosis were correctly detected (95.4% and 96.4% sensitivity). Additionally, as the grade of stenosis increases, the mean level of CT values in the stent lumina decreases linearly accordingly. Conclusion: 64-Slice MDCT has a high accuracy for the detection of significant in-stent or peristent restenosis of assessable stents in patients with peripheral artery stent implantation and therefore can be considered as a valuable noninvasive technique for stent surveillance. Crown Copyright © 2009.
Authors & Co-Authors
Li, Xiao ming
China, Shanghai
Changhai Hospital
China, Shanghai
Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine
Li, Yu hua
China, Shanghai
Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine
Tian, Jian ming
China, Shanghai
Changhai Hospital
Xiao, Yi
China, Shanghai
Changhai Hospital
Lu, Jian ping
China, Shanghai
Changhai Hospital
Jing, Zaiping
China, Shanghai
Changhai Hospital
Sheng, Jing
China, Shanghai
Changhai Hospital
Edwin, Angela
Sierra Leone, Freetown
34 Military Hospital
Wu, Fang hong
China, Shantou
Siemens Ltd, China
Statistics
Citations: 9
Authors: 9
Affiliations: 4
Identifiers
Doi:
10.1016/j.ejrad.2009.03.032
ISSN:
0720048X
Study Design
Cohort Study
Participants Gender
Male
Female