Diagnostic imaging evaluation of XXXX .

@entity1 @entity8 @entity455 @entity101 @entity566 @entity2792 @entity2791
Over 50 million @entity1 in the United States are @entity101 . @entity455 accounts for 3-5% of these @entity101 @entity1 . Because @entity2792 is potentially curable, much effort has been devoted to detecting and treating @entity2791 . Conventional angiography has been traditionally used to diagnose @entity2791 . However, because of its invasiveness and cost, conventional angiography cannot be utilized as a screening test in all @entity1 who may have @entity2791 . Several noninvasive studies have been advocated for screening in @entity101 @entity1 who may have @entity455 . However, the accuracy of these noninvasive studies is widely variable, and appropriate use of these noninvasive studies needs to be better defined. Appropriate use of diagnostic imaging examinations for @entity101 @entity1 depends on the index of suspicion for @entity455 and on the @entity1 's renal function. If certain clinical findings suggest the possibility of @entity455 , then conventional angiography/intraarterial digital subtraction angiography should be performed. Captopril renography or duplex Doppler sonography could also be utilized if angiography is not desired or is contraindicated because of @entity8 or a contrast @entity566 . Magnetic resonance angiography appears to be most helpful in a small, select group of @entity1 who are likely to have proximal @entity2791 .
