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Doctor reviewing a radiation treatment plan. In radiotherapy, radiation treatment planning (RTP) is the process in which a team consisting of radiation oncologists, radiation therapist, medical physicists and medical dosimetrists plan the appropriate external beam radiotherapy or internal brachytherapy treatment technique for a patient with cancer.
Currently, certain radiation therapy techniques employ the process of intensity-modulated radiotherapy (IMRT). This form of radiation treatment uses computers and linear accelerators to sculpt a three-dimensional radiation dose map, specific to the target's location, shape and motion characteristics. Because of the level of precision required ...
Modern radiation therapy relies on a CT scan to identify the tumor and surrounding normal structures and to perform dose calculations for the creation of a complex radiation treatment plan. The patient receives small skin marks to guide the placement of treatment fields. [10]
Most radiation therapy is planned using the results of a 3D CT scan. A 3D scan largely presents a snapshot of the body at a particular point in time, however due to the time of the acquisition, in which the patient is likely to have moved in some way (even if only breathing), there will be an element of blurring or averaging in the 3D scan. [ 6 ]
Doctors created a treatment plan that included 40 weeks of chemotherapy with six weeks of radiation after the first three months of chemotherapy. “By fall they said that everything should be ...
This imaging information is fed into the software to allow real-time tracking and sub-millimetric accuracy during radiotherapy treatments. Information on movements is fed back to the radiation therapist, who is alerted if the patient moves from the optimal position (as determined by their treatment plan).
In modern radiation therapy, 3D dose distributions are typically created in a computerized treatment planning system (TPS) based on a 3D reconstruction of a CT scan. The "volume" referred to in DVH analysis is a target of radiation treatment, a healthy organ nearby a target, or an arbitrary structure.
Image credits: ABC4 Since her diagnosis, Carr revealed that she had managed to keep working full time, taking only two months off in the beginning for surgeries, biopsies, appointments, radiation ...
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