English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

Background: Proton arc therapy is an emerging radiation therapy techniquewhere either the gantry or the patient continuously rotates during theirradiation treatment. One of the perceived advantages of proton arc therapy isthe reduced treatment time, but it is still unclear exactly how long thesetreatment times will be, given that no machine capable of its delivery isavailable at the market at the time of writing. Purpose: We introduce thealgorithm Arc Trajectory Optimization Method (ATOM), which aims to determine anefficient velocity profile for the gantry for rapid delivery of a given protonarc treatment plan. Methods: ATOM computes the trajectory with the shortestdelivery time while ensuring there is enough time to deliver all spots in eachenergy layer and switch energy between layers. The feasibility of the dynamicgantry movement was assured by enforcing maximum and minimum limits forvelocity, acceleration, and jerk. This was achieved by discretizing the gantryvelocity and combining the A* algorithm with the open-source motion generationlibrary Ruckig. The algorithm was tested on a synthetic data set as well as aliver case, a prostate case and a head and neck case. Results: Arc trajectoriesfor plans with 360 energy layers were calculated in under a second using 256discrete velocities. Conclusions: ATOM is an open-source C++ library with aPython interface that rapidly generates velocity profiles, making it a highlyefficient tool for determining proton arc delivery times, which could beintegrated into the treatment planning process.

Optimizing the Traversal Time for Gantry Trajectories for Proton Arc Therapy Treatment Plans