Evaluation of a fast-volumetric four-dimensional magnetic resonance imaging technique for abdominal radiotherapy tumor motion management.

ABSTRACT:

Background

Motion management plays an important role in abdominal cancer radiotherapy. In this study, we investigated the motion measurement accuracy and tumor contrast in liver tumor using a fast volumetric four-dimensional magnetic resonance imaging (4D-MRI) technique using commercial sequence.

Methods

Four volunteers and 34 patients with liver tumors were included in this study with institutional review board (IRB) approval, and all patients underwent routine MRI scans with additional 4D-MRI scan on a 3.0 Tesla MRI scanner. A fast-volumetric sequence [time-resolved imaging with stochastic trajectories-volumetric interpolated breath-hold examination (TWIST-VIBE)] was used to acquire 4D-MRI images. The temporal resolution of 4D-MRI was ~0.69 s per measurement. The 4D-MRI se

SUBMITTER: Wang P 

PROVIDER: S-EPMC12514584 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature