Evaluation of cine imaging during multileaf collimator and gantry motion for real-time magnetic resonance guided radiation therapy.

CONCLUSION: During MLC motion, cine images maintained adequate PIU, and the geometric distortion of points within 15.225 cm from isocenter was less than the 1 mm threshold necessary for real-time target tracking and gating. During gantry rotation, PIU was negatively affected by banding artifacts, and spatial integrity was only maintained within 10 cm from isocenter. Future work should investigate the effects imaging artifacts have on real-time target tracking during MRgRT.
PMID: 33226709 [PubMed - as supplied by publisher]

Source: Journal of Applied Clinical Medical Physics - November 23, 2020 Category: Physics Authors: Kielbasa JE, Meeks SL, Kelly P, Willoughby TR, Zeidan O, Shah AP Tags: J Appl Clin Med Phys Source Type: research