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| Content Provider | frontiers |
|---|---|
| Author | Volz, Lennart Sheng, Yinxiangzi Durante, Marco Graeff, Christian |
| Abstract | Particle therapy is a rapidly growing field in cancer therapy. Worldwide, over 100 centers are in operation, and more are currently in construction phase. The interest in particle therapy is founded in the superior target dose conformity and healthy tissue sparing achievable through the particles’ inverse depth dose profile. This physical advantage is, however, opposed by increased complexity and cost of particle therapy facilities. Particle therapy, especially with heavier ions, requires large and costly equipment to accelerate the particles to the desired treatment energy and steer the beam to the patient. A significant portion of the cost for a treatment facility is attributed to the gantry, used to enable different beam angles around the patient for optimal healthy tissue sparing. Instead of a gantry, a rotating chair positioning system paired with a fixed horizontal beam line presents a suitable cost-efficient alternative. Chair systems have been used already at the advent of particle therapy, but were soon dismissed due to increased setup uncertainty associated with the upright position stemming from the lack of dedicated image guidance systems. Recently, treatment chairs gained renewed interest due to the improvement in beam delivery, commercial availability of vertical patient CT imaging and improved image guidance systems to mitigate the problem of anatomical motion in seated treatments. In this review, economical and clinical reasons for an upright patient positioner are discussed. Existing designs targeted for particle therapy are reviewed, and conclusions are drawn on the design and construction of chair systems and associated image guidance. Finally, the different aspects from literature are channeled into recommendations for potential upright treatment layouts, both for retrofitting and new facilities. |
| ISSN | 2234943X |
| DOI | 10.3389/fonc.2022.930850 |
| Volume Number | 12 |
| Journal | Frontiers in Oncology |
| Language | English |
| Publisher Date | 2022-07-29 |
| Access Restriction | Open |
| Subject Keyword | Treatment chair Upright CT Image guidance Upright treatment Particle therapy Seated treatment |
| Content Type | Text |
| Resource Type | Article |
| Subject | Cancer Research Oncology |
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