目的　探讨核素睾丸血流灌注显像诊断腹股沟隐睾的诊断价值 ,并与超声检查结果比较。方法　 45例未能触及型隐睾患者 ,术前分别行核素睾丸血流灌注显像和B超检查 ,术后与病理检查结果对照 ,比较两组结果。另 10例正常对照者行睾丸血流灌注显像。结果　核素显像及B超对腹股沟隐睾诊断的灵敏度分别为 91%和 5 3 % ,准确率分别为 93 %和62 % ,两者均有极显著性差异 (P <0 .0 1)。核素显像和B超检查诊断腹股沟隐睾与病理诊断的阴性符合率分别为 90 %和3 3 % ,两者有显著性差异 (P <0 .0 5 ) ,阳性符合率分别为 93 %和 10 0 % ,两者未见显著性差异 (P >0 .0 5 )。结论　睾丸血流灌注显像可作为继B超之后诊断腹股沟隐睾的有效检查方法 Objective To investigate the diagnostic value of radionuclide testis perfusion imaging in the diagnosis of cryptorchidism of the groin and to compare with the results of ultrasonic examination. Methods A total of 45 patients with cryptorchidism were excluded. Preoperative nuclide testis perfusion imaging and B-ultrasound were performed. The results of postoperative pathological examination were compared with those of two groups. The other 10 cases of normal control line testis perfusion imaging. Results The sensitivity of radionuclide imaging and B ultrasound in the diagnosis of cryptorchidism in the groin were 91% and 53% respectively, with the accuracy of 93% and 62%, respectively. There was a significant difference between the two (P <0.01) . The coincidence rates of radionuclide imaging and B-ultrasound in the diagnosis of cryptorchidism in the groin were 90% and 33% respectively, with significant difference (P <0.05), the positive coincidence rates were 93% And 100%, no significant difference between the two (P> 0.05). Conclusion Testicular perfusion imaging can be used as an effective method for the diagnosis of cryptorchidism in the groin following B-