当前位置： SCI文献检索 > EUROPEAN RADIOLOGY期刊下所有文献 > High-resolution 3D non-contrast-enhanced, ECG-gated, multi-step MR angiography of the lower extremities: comparison with contrast-enhanced MR angiography.

High-resolution 3D non-contrast-enhanced, ECG-gated, multi-step MR angiography of the lower extremities: comparison with contrast-enhanced MR angiography.

Abstract：

OBJECTIVE:To determine the diagnostic value of non-contrast-enhanced, 3D-high-resolution, ECG-gated, multi-step MR angiography (non-ceMRA) of the lower extremities using a modified turbo-spin-echo technique in comparison to 1.0-molar contrast-enhanced MR angiography (ceMRA) in patients with suspected peripheral vascular disease (PVD). METHODS:Fifty consecutive patients underwent non-ceMRA before ceMRA within the same session. We assessed examination time, image quality, localisation and severity of stenosis. RESULTS:Examination time was shorter for ceMRA (12 ± 4 min) compared with non-ceMRA (28 ± 6 min, p < 0.001). The image quality of the aorta-iliac, femoral and combined popliteal and lower leg arteries was inferior for non-ceMRA (2.8 ± 0.8/3.3 ± 0.8/3.3 ± 0.9) versus ceMRA (4.7 ± 0.8/4.8 ± 0.6/4.8 ± 0.7) on a 5-point scale with 5 for maximum quality (p < 0.01). CeMRA offered more assessable data sets than non-ceMRA (98% vs. 90%). For detecting stenosis >50% or occlusions of pelvic and femoral arteries using non-ceMRA the sensitivity, specificity, positive and negative predictive values were 94%, 86%, 67% and 98% and for popliteal and lower leg arteries 93%, 87%, 69% and 98%, respectively. CONCLUSION:We demonstrated that 3D non-ceMRA represents a very promising technique in patients with lower extremities PVD and could be used as an alternative if gadolinium-based contrast agents cannot be administered.

journal_name

Eur Radiol

journal_title

European radiology

authors

Mohrs OK,Petersen SE,Heidt MC,Schulze T,Schmitt P,Bergemann S,Kauczor HU

doi

10.1007/s00330-010-1932-2

subject

Has Abstract

pub_date

2011-02-01 00:00:00

pages

434-42

issue

2

eissn

0938-7994

issn

1432-1084

journal_volume

21

pub_type

杂志文章

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