Effect of prostate matching on dose distribution by on board imager kV-CBCT image

Nihon Hoshasen Gijutsu Gakkai zasshi
Hideaki HirashimaHideki Hirata

Abstract

The purpose of this study was to evaluate the effect of prostate matching on dose distribution using kilovolt cone beam computed tomography (kV-CBCT) with image guided radiation therapy for prostate cancer. Sixteen prostate cancer patients were treated with intensity modulated radiation therapy to 76 Gy at 2 Gy per fraction in 38 fractions. Daily target localization was performed using "bone matching" and "prostate matching" based on planning CT and kV-CBCT. Prostate dose coverage was assessed by the proportion of the CTV fully encompassed by 95%, 98% isodose lines, and mean dose lines. As for rectal and bladder, dose coverage was assessed by volumes which received 40 Gy, 60 Gy, 70 Gy, 75 Gy and mean dose at treatment. And we calculated the tumor control probability (TCP) and normal tissue complication probability (NTCP), accordingly. They were compared to the bone and prostate matching image. Our study found an improvement in dose usage in CTV and bladder which enabled us to compare the bone matching image and the prostate matching image. However, it did not improve dose usage in the rectal. Then we chose patients who were a large shift from bone matching image to prostate matching image. As a result, rectal dose and NTCP were...Continue Reading

References

May 15, 1991·International Journal of Radiation Oncology, Biology, Physics·C BurmanM Goitein
May 15, 1991·International Journal of Radiation Oncology, Biology, Physics·G J KutcherR Mohan
Jun 1, 1989·International Journal of Radiation Oncology, Biology, Physics·G J Kutcher, C Burman
Jan 1, 1995·International Journal of Radiation Oncology, Biology, Physics·W R LeeT E Schultheiss
Apr 13, 2000·International Journal of Radiation Oncology, Biology, Physics·B Sanchez-Nieto, A E Nahum
Jun 23, 2000·International Journal of Radiation Oncology, Biology, Physics·M van HerkJ V Lebesque
Apr 24, 2001·International Journal of Radiation Oncology, Biology, Physics·K M Langen, D T Jones
Aug 23, 2005·Medical Dosimetry : Official Journal of the American Association of Medical Dosimetrists·Thomas E Byrne
Oct 3, 2006·International Journal of Radiation Oncology, Biology, Physics·Patrick A KupelianGustavo H Olivera
May 22, 2007·International Journal of Radiation Oncology, Biology, Physics·Alexis N T J KotteUulke A van der Heide
Feb 19, 2008·International Journal of Radiation Oncology, Biology, Physics·Katja M LangenPatrick A Kupelian
Apr 15, 2008·International Journal of Radiation Oncology, Biology, Physics·Rabih HammoudBenjamin Movsas
Mar 5, 2010·International Journal of Radiation Oncology, Biology, Physics·Jeff M MichalskiJoseph O Deasy
Mar 12, 2010·Seminars in Radiation Oncology·Michel GhilezanAlvaro Martinez
May 22, 2010·Medical Dosimetry : Official Journal of the American Association of Medical Dosimetrists·Ingelise JensenJane Nielsen
Jul 26, 2011·Strahlentherapie und Onkologie : Organ der Deutschen Röntgengesellschaft ... [et al]·Sergio ZuccaPietro Gabriele

❮ Previous
Next ❯

Related Concepts

Related Feeds

Bladder Carcinoma In Situ

Bladder Carcinoma In Situ is a superficial bladder cancer that occurs on the surface layer of the bladder. Discover the latest research on this precancerous condition in this feed.