Abstract WP165: Contrast Enhanced MR Angiography Overestimates Carotid Stenosis Compared With Time-of-Flight MR Angiography and Digital Subtraction Angiography

Stroke ◽  
2019 ◽  
Vol 50 (Suppl_1) ◽  
Author(s):  
Yong Bum Kim
Keyword(s):  
Carotid Stenosis ◽  
Digital Subtraction Angiography ◽  
Mr Angiography ◽  
Time Of Flight ◽  
Digital Subtraction ◽  
Contrast Enhanced

Contrast-Enhanced MR Angiography and Digital Subtraction Angiography in Living Renal Donors: Diagnostic Agreement, Impact on Decision Making, and Costs

2005 ◽  
Vol 185 (2) ◽  
pp. 448-456 ◽  
Author(s):  
Marc C. J. M. Kock ◽  
Jan N. M. Ijzermans ◽  
Karen Visser ◽  
Shahid M. Hussain ◽  
Willem Weimar ◽  
...  
Keyword(s):  
Decision Making ◽  
Digital Subtraction Angiography ◽  
Mr Angiography ◽  
Digital Subtraction ◽  
Diagnostic Agreement ◽  
Contrast Enhanced

Hepatic Blood Supply: Comparison of Optimized Dual Phase Contrast-enhanced Three-dimensional MR Angiography and Digital Subtraction Angiography

Radiology ◽  
1999 ◽  
Vol 211 (1) ◽  
pp. 51-58 ◽  
Author(s):  
Lars Kopka ◽  
Jens Rodenwaldt ◽  
Rolf Vosshenrich ◽  
Uwe Fischer ◽  
Beatrice Renner ◽  
...  
Keyword(s):  
Digital Subtraction Angiography ◽  
Blood Supply ◽  
Phase Contrast ◽  
Mr Angiography ◽  
Three Dimensional ◽  
Dual Phase ◽  
Digital Subtraction ◽  
Contrast Enhanced

Hemodialysis Access Imaging: Comparison of Flow-interrupted Contrast-enhanced MR Angiography and Digital Subtraction Angiography

Radiology ◽  
2002 ◽  
Vol 225 (3) ◽  
pp. 829-834 ◽  
Author(s):  
Johannes H. M. Smits ◽  
Clemens Bos ◽  
Otto E. H. Elgersma ◽  
Wil A. M. A. van der Mark ◽  
Peter J. Blankestijn ◽  
...  
Keyword(s):  
Digital Subtraction Angiography ◽  
Mr Angiography ◽  
Digital Subtraction ◽  
Hemodialysis Access ◽  
Contrast Enhanced

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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