Advances on the Application of Auxiliary Device in Image-Guided Radiotherapy for Prostate Cancer
Various auxiliary devices in image-guided radiotherapy for prostate cancer have been upgraded,with the development of related technologies such as medical imaging,image process-ing,and material engineering.Among these radiotherapy auxiliary devices,fiducial marker and hydrogel are the most representative.The image matching and calibration technology based on fiducial marker have improved the accuracy of target location in prostate cancer image-guided ra-diotherapy.It enables the patients to achieve higher treatment gains.The distance between the prostate and the anterior wall of the rectum can be increased by hydrogel injection,which signifi-cantly reduces the rectal toxicity.Liquid fiducial marker has the most clinical value among various types of fiducial marker.Its application would become a research focus in future prostate cancer image-guided radiotherapy.The application process of hydrogel need to be closely monitored to ensure the realization of its clinical value.In this paper,the application progress of various types of fiducial marker and hydrogels in image-guided radiotherapy for prostate cancer is reviewed.
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