|
|
|
|
|
Click Here to return To Results
|
|
|
|
All 10 carotid occlusions were detected with sonography and MR angiography.Sonography accurately showed flow in two arteries and MR angiography showed flow in one of the three nearly occluded arteries with extremely slow flow.Multislab three-dimensional time-of-flight MRI angiographic sequences underestimated the degree of stenosis in 12 arteries,and in two cases this resulted from high T1 signal within the atherosclerotic plaque.With conventional angiography as the reference standard for 70%to 99%stenosis,sonography had a sensitivity of 96%,a specificity of 91%and a positive predictive value of 90%while concordant sonographic findings and the presence of a signal void on multislab 3D time-of-flight sequences had a sensitivity of 72%,a specificity of 98%and a positive predictive of 97%.Endarterectomy performed on the basis of sonographic findings of 70%to 99%stenosis and of a signal void on multislab 3D time-of-flight MR angiographic sequences is appropriate. |
|
(click to filter results - removes previous filter)
carotid artery disease,noninvasive evaluation of
carotid artery stenosis
endarterectomy,carotid
MRI
MRI,angiography
MRI,angiography,contrast enhanced
ultrasonography
ultrasonography,carotid artery
|
Click Here to return To Results
|
|