alexa [11C]choline PET CT imaging in occult local relapse of prostate cancer after radical prostatectomy.
Oncology

Oncology

Journal of Nuclear Medicine & Radiation Therapy

Author(s): Reske SN, Blumstein NM, Glatting G

Abstract Share this page

Abstract PURPOSE: The aim of this study was to assess the accuracy and clinical impact of [(11)C]choline PET/CT for localizing occult relapse of prostate adenocarcinoma after radical prostatectomy. METHODS: Fourty-nine patients with prostate adenocarcinoma, radical prostatectomy, no evidence of metastatic disease, and occult relapse underwent [(11)C]choline PET/CT. Thirty-six of the patients had biochemical evidence and histological evaluation of local recurrence. Thirteen patients had PSA < 0.3 ng/ml and no evidence of active disease after 1 year follow-up. Focal nodular [(11)C]choline uptake in the prostatic fossa was visually assessed and graded on a five point scale. Maximum standardized radioactivity uptake value (SUV(max)) and the lesion size were measured. A receiver operating characteristic (ROC) analysis was performed and the clinical impact of the PET/CT study was determined. RESULTS: [(11)C]choline PET/CT was true positive in 23/33 patients and true negative in 12/13 controls. SUV(max) of local recurrence was 3.0 (median, range 0.6-7.4) and 1.1 (0.4-1.6) in controls (p = 0.0002). Lesion size was 1.7 cm (range 0.9-3.7). Area under the ROC curve for detecting relapse was 0.90 +/- 0.05 and 0.83 +/- 0.06 for visual evaluation and SUV(max), respectively. Sensitivity and specificity of [(11)C]choline PET/CT were 0.73 and 0.88, respectively. [(11)C]choline PET/CT identified 12/17 (71\%) patients with a favourable biochemical response to local radiotherapy at 2 year (median, 0.8-3.2 range) follow-up. CONCLUSIONS: Focally increased [(11)C]choline uptake in the prostatic bed reliably predicted local low volume occult relapsing prostate adenocarcinoma after radical prostatectomy and identified 71\% of patients with a favourable biochemical response to local radiotherapy. This article was published in Eur J Nucl Med Mol Imaging and referenced in Journal of Nuclear Medicine & Radiation Therapy

Relevant Expert PPTs

Relevant Speaker PPTs

Recommended Conferences

Peer Reviewed Journals
 
Make the best use of Scientific Research and information from our 700 + peer reviewed, Open Access Journals
International Conferences 2017-18
 
Meet Inspiring Speakers and Experts at our 3000+ Global Annual Meetings

Contact Us

 
© 2008-2017 OMICS International - Open Access Publisher. Best viewed in Mozilla Firefox | Google Chrome | Above IE 7.0 version
adwords