Application of magnetic resonance imaging in differential diagnosis for tuberculous pyonephrosis and hydronephrosis
- VernacularTitle:磁共振成像在结核性脓肾与肾积水鉴别诊断中的应用
- Author:
Zhifeng WU
;
Jie ZHU
;
Rongbo LIU
;
Qiang WEI
- Publication Type:Journal Article
- Keywords:
Tuberculosis,renal;
Hydronephrosis;
Magnetic resonance imaging;
Diagnosis,differential
- From:
Chinese Journal of General Practitioners
2005;0(12):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To probe the value of varied magnetic resonance imaging(MRI) techniques applied in differential diagnosis of tuberculous pyonephrosis from hydronephrosis.Methods Features of MRI,including in T_1WI with/without enhancement,T_2WI,urology MRI and diffusion weighted image(DWI),in seven cases with tuberculous pyonephrosis and 10 cases with hydronephrosis pathologically confirmed were retrospectively analyzed.Results Regular T_1WI and T_2WI could show morphology of the whole kidney,destruction of renal parenchyma and empyema.T_1WI with enhancement could manifest abnormally reinforced walls of pyoid cavity,renal pelvis and calyx and ureter.Urology MRI could show morphology of the whole urinary passage with pathological changes more clearly.Accuracy of these techniques was 84.7%.DWI had the advantage of analyzing diffusion image and ADC map to understand diffusion features of water molecule,and of quantitating ADC value to differentiate tuberculous pyonephrosis from hydronephrosis,with an accuracy of 91.2% combining with DWI and other methods.Conclusion Combined application of varied MRI techniques should be highlighted in differentiation of tuberculous pyonephrosis and hydronephrosis with a higher accuracy of diagnosis.
