scholarly journals Single-dose time-resolved contrast enhanced hybrid MR angiography in diagnosis of peripheral arterial disease: Compared with digital subtraction angiography

2010 ◽  
Vol 32 (4) ◽  
pp. 935-942 ◽  
Author(s):  
Chun-Chieh Wang ◽  
Huei-Lung Liang ◽  
Chia-Chi Hsiao ◽  
Matt Chiung-Yu Chen ◽  
To-Ho Wu ◽  
...  
Keyword(s):  
Single Dose ◽  
Peripheral Arterial Disease ◽  
Digital Subtraction Angiography ◽  
Mr Angiography ◽  
Arterial Disease ◽  
Digital Subtraction ◽  
Time Resolved ◽  
Dose Time ◽  
Contrast Enhanced ◽  
Peripheral Arterial

Imaging of aortoiliac arterial disease: Duplex ultrasound and MR angiography versus digital subtraction angiography

2000 ◽  
Vol 41 (2) ◽  
pp. 125-132 ◽  
Author(s):  
P. Lundin ◽  
Å. Svensson ◽  
E. Henriksen ◽  
T. Jonason ◽  
C. Forssell ◽  
...  
Keyword(s):  
Digital Subtraction Angiography ◽  
Mr Angiography ◽  
Duplex Ultrasound ◽  
Arterial Disease ◽  
Digital Subtraction ◽  
Vascular Intervention ◽  
Non Invasive ◽  
Tof Mra ◽  
Invasive Test ◽  
Contrast Enhanced

Purpose: To evaluate and compare the diagnostic accuracy of duplex ultrasound (US) and MR angiography (MRA) at 1.0 T in aortoiliac arterial disease using digital subtraction angiography (DSA) as the reference standard. In addition, a comparison of the 2D time-of flight (TOF) and 3D contrast-enhanced MRA (CE MRA) techniques was performed. Material and Methods: Prospectively, 39 patients with symptoms of lower-extremity arterial occlusive disease were examined using US, TOF MRA, CE MRA and DSA. Significant lesions (stenosis ≥50%) and occlusions were evaluated blindly for each method. Results: For all segments, the sensitivity for US, TOF MRA and CE MRA with regard to significant lesions was 0.72, 0.81 and 0.81, respectively, and the specificity for each was 0.97, 0.91 and 0.92, respectively. For significant lesions above the inguinal ligament the corresponding sensitivity was 0.84, 0.89 and 0.94 and the specificity 0.93, 0.82 and 0.73, respectively. The specificity was higher when the two MRA methods were combined. TOF MRA overgraded 7 segments as occluded. In most cases, the length of the occlusions was correctly determined on CE MRA, overestimated on TOF MRA and uncertain on US. Conclusion: Neither US nor MRA were sufficiently accurate to fully replace angiography. MRA was preferable to US as a non-invasive test when vascular intervention was contemplated. Although CE MRA was superior to TOF MRA, the most accurate results were achieved when the two methods were combined.

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