Progress in Medical Physics (한국의학물리학회지:의학물리)

Korean Society of Medical Physics (한국의학물리학회)
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Motion Management and Image-Guided Technique in Photon Radiation Therapy: A Review of an Advanced Technology

  • Jin Jegal (Department of Radiation Oncology, Seoul National University Hospital) ;
  • Hyojun Park (Department of Radiation Oncology, Seoul National University Hospital) ;
  • Seonghee Kang (Department of Radiation Oncology, Seoul National University Hospital) ;
  • Chang Heon Choi (Department of Radiation Oncology, Seoul National University Hospital) ;
  • Jung-in Kim (Department of Radiation Oncology, Seoul National University Hospital)
  • Received : 2024.02.26
  • Accepted : 2024.05.22
  • Published : 2024.06.30
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Abstract

Herein, we provide a concise review of the critical role of motion management in radiation therapy, with a focus on photon radiation therapy, real-time control of respiratory motion, and image-guided radiation therapy (IGRT) in lung stereotactic body radiation therapy (SBRT). The dynamic nature of human anatomy, particularly in regions prone to movement such as the thoracic and abdominal areas, poses significant challenges in accurately targeting tumors during radiation therapy. This review explores the implications of organ and tumor motion, emphasizing the necessity for precise treatment delivery. We assess the advancements in four-dimensional (4D) imaging techniques such as 4D computed tomography, which provide time-resolved images for enhanced treatment planning. The review highlights various motion management strategies, including motion-encompassing methods, respiratory-gating, breath-hold techniques, and real-time tumor tracking, discussing their implementation and impact on treatment efficacy. The role of IGRT in lung SBRT is particularly emphasized, showcasing how real-time imaging and advanced targeting techniques enhance the precision of high-dose radiation delivery while minimizing exposure to surrounding healthy tissues. This comprehensive review aims to underscore the significance of integrating motion management in radiation therapy, highlighting its pivotal role in improving treatment accuracy, reducing toxicity, and ultimately enhancing patient outcomes in cancer care.

Keywords

Acknowledgement

This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (NRF-2021R1|1A1A01059845).

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