Direct comparison of 99mTc-PSMA SPECT/CT and 68Ga-PSMA PET/CT in patients with prostate cancer
سال انتشار: 1399
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 292
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شناسه ملی سند علمی:
JR_JNMB-8-1_001
تاریخ نمایه سازی: 24 تیر 1399
چکیده مقاله:
Objective(s): 99mTc-PSMA SPECT/CT is a cost effective alternative for 68Ga-PSMA PET/CT. The aim of this study was to directly compare these two techniques in patients with prostate cancer. Methods: 28 man with prostate cancer were studied using 99mTc-PSMA SPECT/CT and 68Ga-PSMA PET/CT in a short time period (68Ga-PSMA. 99mTc-PSMA kit (PSMA I+S) was used for SPECT/CT and whole body imaging was performed 4 hours after IV injection of 740 MBq of 99mTc-PSMA. Images were interpreted independently and the results of each imaging were recorded. Results: The mean age of the patients was 64.7±9.6 years old and the mean time difference between two sets of images was 16.6±13.5 days. Abnormal uptake was seen in 25 (89.2%) patients by 68Ga-PSMA PET/CT and 20 (71.4%) patients with 99mTc-PSMA SPECT/CT. No patients with positive 99mTc-PSMA SPECT/CT had negative 68Ga-PSMA PET/CT. The mean number of detected lesions was 26.07±27.5 by 68Ga-PSMA PET/CT and 10.52±10.99 by 99mTc-PSMA SPECT/CT (P<0.001). Detection of lymph nodes and bone metastases were not significantly different between two sets of imaging (P> 0.05), however 68Ga-PSMA PET/CT were more successful in detection of prostate bed lesions compared to 99mTc-PSMA scan. Interestingly, no patient with PSA level of > 2.1 ng/ml had discordant result between two sets of images. Conclusion: 99mTc-PSMA SPECT/CT is as accurate as 68Ga-PSMA PET/CT in M staging, however 68Ga-PSMA PET/CT detected more lesions compared to 99mTc-PSMA SPECT/CT. Detection rate was not significantly different between two techniques in patients with PSA levels> 2.1 ng/ml.
کلیدواژه ها:
نویسندگان
Batool Albalooshi
Dubai Nuclear Medicine and Molecular imaging Center-Dubai Health Authority, Dubai, UAE
Mouza Al Sharhan
Department of Pathology and Genetics, Dubai Hospital, Dubai Health Authority, Dubai, UAE
Fariborz Bagheri
Department of urology-Dubai Health Authority, Dubai, UAE
Shabna Miyanath
Dubai Nuclear Medicine and Molecular imaging Center-Dubai Health Authority, Dubai, UAE
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