Abstract
A method for validating the start-to-end accuracy of a 3-D ultrasound (US)-based patient positioning system for radiotherapy is described. A radiosensitive polymer gel is used to record the actual dose delivered to a rigid phantom after being positioned using 3-D US guidance. Comparison of the delivered dose with the treatment plan allows accuracy of the entire radiotherapy treatment process, from simulation to 3-D US guidance, and finally delivery of radiation, to be evaluated. The 3-D US patient positioning system has a number of features for achieving high accuracy and reducing operator dependence. These include using tracked 3-D US scans of the target anatomy acquired using a dedicated 3-D ultrasound probe during both the simulation and treatment sessions, automatic 3-D US-to-US registration and use of infrared LED (IRED) markers of the optical position-sensing system for registering simulation computed tomography to US data. The mean target localization accuracy of this system was 2.5 mm for four target locations inside the phantom, compared with 1.6 mm obtained using the conventional patient positioning method of laser alignment. Because the phantom is rigid, this represents the best possible set-up accuracy of the system...Continue Reading
References
Feb 1, 1980·Radiology·M M BurlewS W Sum
Mar 10, 2000·Medical Image Analysis·R RohlingL Berman
Apr 24, 2001·International Journal of Radiation Oncology, Biology, Physics·K M Langen, D T Jones
Aug 31, 2002·Medical Physics·Wolfgang A ToméFrancis J Bova
May 18, 2004·International Journal of Radiation Oncology, Biology, Physics·Xavier ArtignanHarry Bartelink
Oct 7, 2004·International Journal of Radiation Oncology, Biology, Physics·John P McGahanMaria Fogata
Mar 19, 2005·Marine Biotechnology·Yongjun WangLei Wang
Apr 9, 2005·Physics in Medicine and Biology·M HiltsC Duzenli
Jun 29, 2005·Seminars in Radiation Oncology·Michael G Herman
Jun 29, 2005·Seminars in Radiation Oncology·David A Jaffray
Jul 21, 2005·International Journal of Radiation Oncology, Biology, Physics·Katja M LangenPatrick A Kupelian
Aug 9, 2005·Ultrasound in Medicine & Biology·Tony C Poon, Robert N Rohling
Mar 23, 2006·Physics in Medicine and Biology·A JirasekP Baxter
Aug 8, 2007·IEEE Transactions on Medical Imaging·Wolfgang WeinNassir Navab
Aug 23, 2007·Journal of Applied Clinical Medical Physics·Laura A Drever, Michelle Hilts
Citations
Jan 10, 2012·Medical Physics·Simon PlachtElli Angelopoulou
Apr 2, 2011·Medical Physics·W HoegeleP Zygmanski
Feb 17, 2011·Computer Aided Surgery : Official Journal of the International Society for Computer Aided Surgery·Raoul KingmaChris Nguan
May 10, 2011·The Journal of Surgical Research·Aaron StrumwasserGregory P Victorino
Nov 16, 2011·Biomaterials·Chih-Yu WangKeng-Shiang Huang
Jan 17, 2015·Physics in Medicine and Biology·Davide FontanarosaFrank Verhaegen