Feasibility of online radial magnetic resonance imaging for adaptive radiotherapy of pancreatic tumors.

ABSTRACT:

Background and purpose

Online adaptive magnetic resonance (MR)-guided treatment planning for pancreatic tumors on 1.5T systems typically employs Cartesian 3D T ₂w magnetic resonance imaging (MRI). The main disadvantage of this sequence is that respiratory motion results in substantial blurring in the abdomen, which can hamper delineation accuracy. This study investigated the use of two motion-robust radial MRI sequences as main delineation scan for pancreatic MR-guided radiotherapy.

Materials and methods

Twelve patients with pancreatic tumors were imaged with a 3D T ₂w scan, a Periodically Rotated Overlapping ParallEL Lines with Enhanced Reconstruction (PROPELLER) scan (partially overlapping strips), and a 3D Vane scan (stack-of-stars), on

SUBMITTER: Grimbergen G 

PROVIDER: S-EPMC10074242 | biostudies-literature | 2023 Apr

REPOSITORIES: biostudies-literature