Purpose: Triggered imaging is the use of kV image acquisition during treatment delivery to monitor intrafractional motion of implanted fiducials. An automatically identified fiducial point on the kV image is compared to its expected position predetermined from the treatment planning CT, and the treatment can be paused if the difference exceeds a user-definable tolerance. Conclusion: Triggered […]
Tag Archives: Triggered Imaging
Background: Fiducial markers are frequently used before treatment for imageguided patient setup in radiation therapy (RT), but can also be used during treatment for image‐guided intrafraction motion detection. This report describes our implementation of automatic marker detection with periodic kV imaging (TrueBeam v2.5) to monitor and correct intrafraction motion during prostate RT. Methods: We evaluated […]
“Online Correction of Intrafraction Motion during Volumetric Modulated Arc Therapy for Prostate Radiotherapy: A Cohort Study Quantifying the Frequency of Shifts and Analysis of Men at Highest Risk” Methods (extract): 132 prostate cancer patients underwent planning CT and same day placement of 3 Gold Anchor markers. Triggered kV images were acquired every 10 seconds using […]
“Fiducial markers in adjuvant setting for a patient affected by endometrial cancer: a case report” Introduction (extract): Implantation of Fiducial Markers (FMs) in the vaginal cuff of patients receiving radiotherapy (RT) or brachytherapy could help patient daily setup, image guidance and intra-fraction detection of the radiation targets. Clinical case (extract): Case report of a woman […]
“Online correction of intrafraction motion during volumetric modulated arc therapy for prostate radiotherapy using fiducial-based kV imaging: A cohort study quantifying the frequency of shifts and analysis of men at highest risk” Background (extract): We sought to characterize setup corrections in our practice informed by the TrueBeam Advanced imaging package, and analyze factors associated with […]