Intensity Modulation takes place as part of the treatment as a default where ever the oncologist deems it possible without harming organs in the back drop. The MLC increases the accuracy of where the dosage needs to be applied while protecting good tissues.
@pablog77055 Probably to reduce dose to the left lung. I've seen a case relatively similar to this except it was an ant and post beam only to reduce dose to the unaffected lung. Oncologist wanted minimal dose to unaffected lung to try to preserve the left left lung. There are also no critical structures around the PTV where dose needs to be minimized.
I could be wrong since I was only in a dosimetry rotation for a very short period of time.
The planner has used wedges, which is a form of intensity modulation.
Modern IMRT requires technologically advanced equipment (eg. MLC's that may move during treatment) and may need a higher degree of quality assurance (checking that the plan is acceptable and safe). These things demand resources that many departments just don't have.
I like it. Very informative. I'll be waiting for more videos.
jhamien920 3 months ago
Imagine Guided Radiation Therapy allows for the MLC to shift positions, thus minimizing unnecessary dosages to good tissues.
Spadadiforza 1 year ago
Why not use IMRT?
pablog77055 2 years ago
@pablog77055
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Intensity Modulation takes place as part of the treatment as a default where ever the oncologist deems it possible without harming organs in the back drop. The MLC increases the accuracy of where the dosage needs to be applied while protecting good tissues.
Spadadiforza 1 year ago
@pablog77055 Probably to reduce dose to the left lung. I've seen a case relatively similar to this except it was an ant and post beam only to reduce dose to the unaffected lung. Oncologist wanted minimal dose to unaffected lung to try to preserve the left left lung. There are also no critical structures around the PTV where dose needs to be minimized.
I could be wrong since I was only in a dosimetry rotation for a very short period of time.
asnmonkey6969 1 year ago
@pablog77055
The planner has used wedges, which is a form of intensity modulation.
Modern IMRT requires technologically advanced equipment (eg. MLC's that may move during treatment) and may need a higher degree of quality assurance (checking that the plan is acceptable and safe). These things demand resources that many departments just don't have.
chykken 7 months ago
an excellent intro to dosimetry, thank you!
thatxrayguy23 2 years ago
Fascinating, I had no idea this level of control or analysis was possible!
colinofedinburgh 2 years ago
i will love to take a look at the code of the program running that fantastic machine
lastmoh1989 3 years ago