How many of you,use Field in Field technnique for Breast-Cancer Treatment and what about the QA?
I have been doing research about this tecnnique for breast cancer treatment. The DVH results apparently are very good, less dose to OAR, less maximun dose to the skin,and max. PTV etc. I have proven it. However, physicians are very reserved and sometimes they prefer "the traditional". My task is not to convince them, but I would like to know how many of you use this technnique and what can you say about the QA. I have tested it with ArcCheck but for the moment, I'm having problems with the pass rate; I'm trying to discover what is the reason.
SA Yoganathan
Main concern for intensity modulation in breast is the respiratory motion. Though the respiratory induced uncertainties (point dose) are averaged out over the typical course of RT (famous articles by Bortfeld et al and Yu et al), the spatial location of dose distribution will vary. This necessitates the importance of controlling these intra-fractional motions in high gradient dose delivery such as IMRT (both in forward and inverse). Hence high gradient delivery should be practiced along with Intra-fractional motion management techniques i.e. breath hold or gating or tracking.
Regarding your pass rate problem, It may due to the difference in resolution of reference dose plane (TPS) and the Arc check device.
Sunil Upadhyay
respected mam
namaskar
I am a man of phy.done Ph.D in nuclear physics.my research is theoritical.But must say your work is praiseworthy.It is need of time.god bless u.my blessings r with u.
Kanyarat Katanyoo
According to your explain, dose it mean that you want to boost tumor bed at the same time of whole breast RT? I think the most concern about this issue is complication or cosmetic result (which occur about more than 5 years from this time) . We always use RT in breat cancer for adjuvant therapy (treat just microscopic disease). It is not like H&N cancer (gross disease) what we concern about the tumor repopulation if we delayed RT. Therefore, it is not necessary to hasten RT in breast .