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Δευτέρα 11 Ιουνίου 2018

Comparative study of positron emission tomography/computed tomography and computed tomography in the evaluation of post-treatment carcinoma cervix patients

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Saurabh Pantola, Sanjay Kala, Chayanika Kala, Santhosh Sampath, Mukesh Shukla

Indian Journal of Nuclear Medicine 2018 33(3):194-201

Purpose of Study: To evaluate and compare imaging findings using computed tomography (CT) alone and positron emission tomography/CT (PET/CT) fusion imaging in posttreatment carcinoma cervix patients for recurrence. Subjects and Methods: From June 2014 to May 2016, 50 posttreatment carcinoma cervix patients were referred to our institution for PET/CT imaging. In all 50 of these patients referred for evaluation, a reliable reference standard was available. The reference standard was established by histopathological examination of accessible locoregional and nodal/distant metastatic involvement or follow-up of patients. CT and PET/CT were performed and analyzed for locoregional, pelvic nodal, and distant metastasis involvement in posttreatment carcinoma cervix cases. Results: In the evaluation of locoregional involvement, CT alone was found to have a sensitivity of 75% and specificity of 90% while PET/CT was found to have a sensitivity of 95% and specificity of 100%. Furthermore, in evaluation of pelvic nodal involvement, CT alone was found to have a sensitivity of 72% and specificity of 92.6% while PET/CT was found to have a sensitivity of 95.5% and specificity of 92.9%. In context to distant metastasis involvement (including para-aortic nodes), CT alone was found to have a sensitivity of 91.7% and specificity of 96.2% while PET/CT was found to have a sensitivity of 95.8% and specificity of 100%. PET/CT fusion in comparison to CT alone is better in sensitivity and specificity in the detection of locoregional involvement, pelvic node invasion, and distant metastasis in posttreatment carcinoma cervix cases.

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