Progress in assessing the treatment accuracy of liver stereotactic body radiotherapy through post-therapeutic magnetic resonance imaging morphologic alterations
10.3969/j.issn.1006-5725.2024.22.001
- VernacularTitle:磁共振影像学改变评估肝癌立体定向放疗精度的研究进展
- Author:
Huiling YE
1
,
2
;
Renming ZHONG
Author Information
1. 四川大学华西临床医学院/华西医院放射物理技术中心(四川 成都 610041)
2. 四川大学华西医院医学装备创新研究中心(四川 成都 610041)
- Keywords:
magnetic resonance imaging;
stereotactic body radiotherapy;
liver cancer;
respiratory motion management strategy
- From:
The Journal of Practical Medicine
2024;40(22):3119-3123
- CountryChina
- Language:Chinese
-
Abstract:
In the treatment of primary liver cancer and metastatic liver cancer,stereotactic body radiotherapy(SBRT)can be utilized to administer high doses of radiation for achieving ablative therapeutic effects.Given the singular nature of delivering high-dose radiation through SBRT,a higher level of precision is required in radiation therapy.Particularly,liver cancer is susceptible to positioning errors and respiratory motion,necessitating the implementation of respiratory motion management and image guidance techniques.However,existing accuracy verification methods for radiation therapy primarily rely on phantom studies,making it challenging to conduct in-vivo verification during treat-ment execution.Research has indicated that the liver exhibits corresponding morphological changes in magnetic reso-nance imaging following exposure to specific doses of radiation therapy,thereby serving as an indicator for assessing treatment accuracy.This article aims to discuss and analyze the principles underlying magnetic resonance imaging alterations after stereotactic body radiotherapy for liver cancer,including their manifestations,timing of appearance,evaluation methodologies for accuracy assessment,clinical challenges encountered during implementation,as well as future directions for development.
