Comparison of MRI- and CT-based post-implant dosimetric analysis of transperineal interstitial permanent prostate brachytherapy

作者: James J. Prete , Bradley R. Prestidge , William S. Bice , Donald F. Dubois , Laura A. Hotchkiss

DOI: 10.1002/(SICI)1520-6823(1998)6:2<90::AID-ROI4>3.0.CO;2-C

关键词:

摘要: The purpose of this work was to investigate how a recently developed MRI-based post-implant dosimetric analysis technique for ultrasound guided transperineal interstitial permanent prostate brachytherapy (TIPPB) compared with the currently accepted CT-based technique. study based upon 3-mm MRI and CT scans 15 patients who had received either 125I or 103Pd implantation. All images were acquired on post-operative day 1 within hr each other. Prostate volumes determined by same physician. Sources digitized calculations performed using an in-house treatment planning system nearest neighbor seed sorting routine AAPM TG43 formalism. volume, geometric source distribution spread (rcom), dose volume histogram (DVH), tumor control probability (TCP) from both image sets. Differences in localization evaluated comparing prescription isodose volumes. through prostate-specific DVH TCP comparisons. as larger than that average +9.1% (R = 0.70). Calculated rcom smaller −0.9 mm 0.81) . Isodose at 80, 90, 100, 150% differed +2.5, +2.9, −2.9, +4.8%, respectively 0.97, 0.98, 0.91). Percentage encompassed −0.9, −0.1%, 0.34, 0.35, 0.35). −0.8% 0.37). results further support our initial findings may be used reliably localize implanted sources TIPPB. This also demonstrated is possible. However, it evident differences can result significantly different assessments coverage. There clearly need quantify between these two imaging modalities application address whether greater accuracy describing dose-volume relationship improvements visualization gland will translate into improved correlation outcome. Radiat. Oncol. Invest. 6:90–96, 1998. Published 1998 Wiley-Liss, Inc.

参考文章(30)
Marinus A. Moerland, Harm K. Wijrdeman, Robert Beersma, Chris J.G. Bakker, Jan J. Battermann, Evaluation of permanent I-125 prostate implants using radiography and magnetic resonance imaging International Journal of Radiation Oncology Biology Physics. ,vol. 37, pp. 927- 933 ,(1997) , 10.1016/S0360-3016(96)00575-5
Hedvig Hricak, R. Brooke Jeffrey, Georges C. Dooms, Emil A. Tanagho, Evaluation of Prostate Size: A Comparison of Ultrasound and Magnetic Resonance Imaging Urologic Radiology. ,vol. 9, pp. 1- 8 ,(1988) , 10.1007/BF02932619
Howard I. Amols, Isaac I. Rosen, A three-film technique for reconstruction of radioactive seed implants Medical Physics. ,vol. 8, pp. 210- 214 ,(1981) , 10.1118/1.594935
John C. Blasko, Peter D. Grimm, Haakon Ragde, Brachytherapy and organ preservation in the management of carcinoma of the prostate Seminars in Radiation Oncology. ,vol. 3, pp. 240- 249 ,(1993) , 10.1016/S1053-4296(05)80121-3
Mack Roach, Pamela Faillace-Akazawa, Christine Malfatti, John Holland, Hedvig Hricak, Prostate volumes defined by magnetic resonance imaging and computerized tomographic scans for three-dimensional conformal radiotherapy International Journal of Radiation Oncology Biology Physics. ,vol. 35, pp. 1011- 1018 ,(1996) , 10.1016/0360-3016(96)00232-5
Howard M. Sandler, Robert L. Bree, P. William McLaughlin, H. Barton Grossman, Allen S. Lichter, Localization of the prostatic apex for radiation therapy using implanted markers International Journal of Radiation Oncology*Biology*Physics. ,vol. 27, pp. 915- 919 ,(1993) , 10.1016/0360-3016(93)90468-B
Donald F. Dubois, Bradley R. Prestidge, Laura A. Hotchkiss, William S. Bice, James J. Prete, Source localization following permanent transperineal prostate interstitial brachytherapy using magnetic resonance imaging International Journal of Radiation Oncology Biology Physics. ,vol. 39, pp. 1037- 1041 ,(1997) , 10.1016/S0360-3016(97)00501-4
Lawrence Kleinberg, Kent Wallner, Jitendra Roy, Michael Zelefsky, V.Elayne Arterbery, Zvi Fuks, Louis Harrison, Treatment-related symptoms during the first year following transperineal 125I prostate implantation International Journal of Radiation Oncology*Biology*Physics. ,vol. 28, pp. 985- 990 ,(1994) , 10.1016/0360-3016(94)90119-8
Subir Nag, Daniel D Scaperoth, Robert Badalament, Scott A. Hall, John Burgers, Transperineal palladium 103 prostate brachytherapy: Analysis of morbidity and seed migration Urology. ,vol. 45, pp. 87- 92 ,(1995) , 10.1016/S0090-4295(95)96950-0