ABSTRACT
ObjectiveTo compare the accuracy of the four sequences of MRI in the diagnosis of articular cartilage injury of the knee and to investigate the advantage and shortage of the four sequences. In order to evaluate the most adequate sequence in detecting articular cartilage injury of the knee. Methods36 knee joints of 31 patients,underwent MRI scanning prior to arthroscopy included T1WI-TSE,T2 WI-TSE-SPIR, PDW-TSE-SPIR,3D-WATSC. Divided each knee side of every cartilage into five parts. Investigated and diagnosed the 180 articular cartilage surface according to Recha criteria by detecting and compared with arthroscopic examination respectively. The accurate criteria of the four sequences of MRI was sensitivity, specificity, accuracy. The criteria of correlation was the value of Kappa.ResultsCompared with the arthroscopic result which was the gold standard, the sensitivity, specificity, accuracy and Kappa value of the T1 W-TSE sequence was 63.8％ ,95.3％ ,78.8％ and 0. 403 respectively;The sensitivity,specificity ,accuracy and Kappa value of the T2WI-TSE-SPIR sequence was 56.3％ ,97.6％ ,76.1％ and 0. 353 respectively.The sensitivity,specificity,accuracy and Kappa value of the PDW-TSE-SPIR sequence was 79. 8％, 93.0％ ,86. 1％and 0. 642 respectively; The sensitivity, specificity, accuracy and Kappa value of the 3D-WATSC was 96. 8％,88. 3％ ,92.8％ and 0. 812 respectively. ConclusionThe accuracy and Kappa values of Fat-suppressed three-dimensiunal fast spoiled gradient-echo sequence (3D-WATSC)was superior to other sequences in the diagnosis of articular cartilage injury of the knee. The correlation between 3D-WATSC and arthroscopy in detecting cartilage injury was remarkable. 3D-WATSC had been deemed the most adequate sequence in detecting articular cartilage injury of the knee.
ABSTRACT
Objective To evaluate the early diagnosis value of MRI combined with DSA in cirrhotic nodules (regenerative nodules, dysplastic nodules) becoming small hepatocellular carcinoma. Methods 40 patients diagnosed as cirrhosis and whose liver nodules detected by ultrasound were followed up as MR dynamic study. All patients were followed up by three dynamic contrast-enhanced MR scanning once every 3 months,and the changes of cirrhotic nodules were observed and analyzed in the signal. If MRI suggested cancerous nodules cirrhosis, hepatic artery DSA would be carried out. Results 40 patients were followed up for 1.5 to 3 years,all patients MR nodules were found in liver regeneration. Follow-up process, the dysplastic nodules were founded in 28 cases and the small hepatocellular carcinoma were founded in 18 patients. 16 cases of 18 patients with small hepatocellular carcinoma carried out routine DSA all had typical of hepatic arterial blood supply and angiogenesis, and were given to Integrated Traditional and Western intervention simultaneously. Conclusion Combined use of MRI-DSA in the evaluation of cirrhotic nodules had a definite value, and could find smaller hepatocellular carcinoma,provide the basis for smaller hepatocellular carcinoma therapy.
ABSTRACT
Objective To decrease misdiagnosis and to improve the correct diagnostic rate of mammary tuberculosis .Methods 9 cases of mammary tuberculosis proved by operation and pathology misdiagnosed as other diseases were retrospectively analyzed.Results Among 9 cases,5 cases were misdiagnosed as mammary cancer,1 case as chronic mammary inflammation,1 case as mammary abcess,1 case as mammary hyperplasia,1 case as mammary fibroadenoma.Conclusion The reasons leading to misdiagnosis are unsuitable methods of examinations,lack of solid basic knowledge,and lack of experience.