[MR angiography of peripheral vessels with automatic tracking table technique at 1.0 in comparison with intra-arterial digital subtraction angiography].
OBJECTIVE
Contrast-enhanced (CE) 3D-MR angiography of peripheral arteries was performed in 8 patients with peripheral arterial occlusive disease by applying a new tracking technique on a 1.0 T system (Magnetom Harmony, Siemens). The studies were compared with intra-arterial digital angiography as gold standard.


METHODS
Imaging of the distal aorta, pelvis, upper and lower limb arteries was accomplished with a Flash-3D-sequence (TR/TE = 6.2/3.2 ms) within 26 s acquisition time of each region after a single bolus of 30 ml contrast agent. Individual circulation time was determined by a test bolus before each examination.


RESULTS
112 vessel segments were evaluated. MR angiography achieved a sensitivity of 89% and a specificity of 100% for detecting high grade stenoses and vessel occlusions.


CONCLUSIONS
Tracking CE 3D-MR angiography with a 1.0 T MR imager proved to be a promising method in evaluating hemodynamically significant stenoses and occlusions of peripheral arteries. However, its definite role in the diagnostic work-up of peripheral arterial occlusive disease has to be evaluated in larger prospective studies.
Oberholzer
K
K
Klinik für Radiologie, Johannes-Gutenberg-Universität, Mainz. oberholz@radiologie.klinik.uni-mainz.de
Kreitner
K F
KF
Kalden
P
P
Requardt
M
M
Pitton
M
M
Mildenberger
P
P
Thelen
M
M
D015901:Angiography, Digital Subtraction / Q000295:instrumentation*; D001157:Arterial Occlusive Diseases / Q000175:diagnosis*; D003287:Contrast Media; D005121:Extremities / Q000098:blood supply; D019786:Gadolinium DTPA; D006801:Humans; D007091:Image Processing, Computer-Assisted / Q000295:instrumentation*; D018810:Magnetic Resonance Angiography / Q000295:instrumentation*; D012015:Reference Standards; D012680:Sensitivity and Specificity
D003287:Contrast Media; D019786:Gadolinium DTPA