MRI-only based radiation therapy of prostate cancer: workflow and early clinical experience

Acta Oncologica
Mikko TenhunenHarri Visapää

Abstract

Magnetic resonance imaging (MRI) is the most comprehensive imaging modality for radiation therapy (RT) target delineation of most soft tissue tumors including prostate cancer. We have earlier presented step by step the MRI-only based workflow for RT planning and image guidance for localized prostate cancer. In this study we present early clinical experiences of MRI-only based planning. We have analyzed the technical planning workflow of the first 200 patients having received MRI-only planned radiation therapy for localized prostate cancer in Helsinki University Hospital Cancer center. Early prostate specific antigen (PSA) results were analyzed from n = 125 MRI-only patients (n = 25 RT only, n = 100 hormone treatment + RT) and were compared with the corresponding computed tomography (CT) planned patient group. Technically the MRI-only planning procedure was suitable for 92% of the patients, only 8% of the patients required supplemental CT imaging. Early PSA response in the MRI-only planned group showed similar treatment results compared with the CT planned group and with an equal toxicity level. Based on this retrospective study, MRI-only planning procedure is an effective and safe way to perform RT for localized prostate cancer...Continue Reading

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Sep 9, 2018·Journal of Magnetic Resonance Imaging : JMRI·Hersh ChandaranaIndra J Das
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