BACKGROUND: Prostate brachytherapy consists in placing radioactive seeds for tumour destruction under transrectal ultrasound imaging (TRUS) control. It requires prostate delineation from the images for dose planning. Because ultrasound imaging is patient- and operator-dependent, we have proposed to fuse MRI data to TRUS data to make image processing more reliable. The technical accuracy of this approach has already been evaluated. METHODS: We present work in progress concerning the evaluation of the approach from the dosimetry viewpoint. The objective is to determine what impact this system may have on the treatment of the patient. Dose planning is performed from initial TRUS prostate contours and evaluated on contours modified by data fusion. RESULTS: For the eight patients included, we demonstrate that TRUS prostate volume is most often underestimated and that dose is overestimated in a correlated way. However, dose constraints are still verified for those eight patients. CONCLUSIONS: This confirms our initial hypothesis. Copyright 2006 John Wiley & Sons, Ltd.
BACKGROUND: Prostate brachytherapy consists in placing radioactive seeds for tumour destruction under transrectal ultrasound imaging (TRUS) control. It requires prostate delineation from the images for dose planning. Because ultrasound imaging is patient- and operator-dependent, we have proposed to fuse MRI data to TRUS data to make image processing more reliable. The technical accuracy of this approach has already been evaluated. METHODS: We present work in progress concerning the evaluation of the approach from the dosimetry viewpoint. The objective is to determine what impact this system may have on the treatment of the patient. Dose planning is performed from initial TRUS prostate contours and evaluated on contours modified by data fusion. RESULTS: For the eight patients included, we demonstrate that TRUS prostate volume is most often underestimated and that dose is overestimated in a correlated way. However, dose constraints are still verified for those eight patients. CONCLUSIONS: This confirms our initial hypothesis. Copyright 2006 John Wiley & Sons, Ltd.
Authors: Andriy Fedorov; Sang-Eun Song; Tina Kapur; Robert Owen; Emily Neubauer Sugar; Paul Nguyen; William M Wells; Clare M Tempany Journal: Clin Image Based Proced Date: 2014
Authors: Mehdi Moradi; Firdaus Janoos; Andriy Fedorov; Petter Risholm; Tina Kapur; Luciant D Wolfsberger; Paul L Nguyen; Clare M Tempany; William M Wells Journal: Conf Proc IEEE Eng Med Biol Soc Date: 2012
Authors: Alfonso Gomez-Iturriaga; Juanita Crook; Francisco Casquero; Claudia Carvajal; Arantxa Urresola; Begoña Canteli; Ana Ezquerro; Eduardo Hortelano; Jon Cacicedo; Jose Maria Espinosa; Fernando Perez; Pablo Minguez; Pedro Bilbao Journal: J Contemp Brachytherapy Date: 2014-06-09