[Feasibility of non-contrast enhanced magnetic resonance angiography for diagnosis of renal artery stenosis in elderly patients].
OBJECTIVE
To evaluate the diagnostic efficacy of IFIR-FIESTA technique in detecting renal artery stenosis in elderly patients.


METHODS
Twenty-seven aged patients underwent both IFIR-FIESTA and 3D CE-MRA examinations. The imaging quality and renal artery stenosis grades were evaluated. Kappa test was used to assess the consistency between the two methods. With CE-MRA as the reference, the diagnostic sensitivity, specificity, accuracy, PPV and NPV for IFIR-FIESTA were calculated in detecting renal artery stenosis.


RESULTS
The images by the two methods were 100% qualified for diagnosis, although the image quality of CE-MRA was significantly better. IFIR-FIESTA and CE-MRA showed excellent consistency in detecting renal artery stenosis. With CE-MRA as the reference, the diagnostic sensitivity, specificity, accuracy, PPV and NPV for IFIR-FIESTA were 97.1%, 100%, 98.1%, 100%, and 95% in detecting renal artery stenosis, respectively.


CONCLUSIONS
IFIR-FIESTA is feasible as a routine examination for detecting renal artery stenosis in elderly patients.
South Building Department of Radiology, General Hospital of PLA, Beijing 100853, China. E-mail: xuxian_301@163.com.
Xian
X
Xu
Ningyu
N
An
Suihui
S
Chen
Xue
X
Li
Bo
B
Jiang
Shaojun
S
Han
Xinqiu
X
Liu
D000368:Aged; D000369:Aged, 80 and over; D003287:Contrast Media; D005240:Feasibility Studies; D005260:Female; D006801:Humans; D018810:Magnetic Resonance Angiography / Q000379:methods*; D008297:Male; D008875:Middle Aged; D012078:Renal Artery Obstruction / Q000175:diagnosis*; D012680:Sensitivity and Specificity
D003287:Contrast Media