Clinical experience of MRI^4D QUASAR motion phantom for latency measurements in 0.35T MR-LINAC.

ABSTRACT:

Purpose

In MRgRT, accuracy of treatment depends on the gating latency, when real-time targeting and gating is enabled. Gating latency is dependent on image acquisition, processing time, accuracy, efficacy of target tracking algorithms, and radiation beam delivery latency. In this report, clinical experience of the MRI^4D QUASAR motion phantom for latency measurements on a 0.35-T magnetic resonance-linear accelerator (MR-LINAC) with two imaging speeds and four tracking algorithms was studied.

Materials/methods

Beam-control latency was measured on a 0.35-T MR-LINAC system with four target tracking algorithms and two real-time cine imaging sequences [four and eight frames per second (FPS)]. Using an MR-compatible motion phantom, the delays between phantom beam trigger

SUBMITTER: Kim T 

PROVIDER: S-EPMC7856488 | biostudies-literature | 2021 Jan

REPOSITORIES: biostudies-literature