ESTRO 2024 - Abstract Book

S3855

Physics - Image acquisition and processing

ESTRO 2024

Figure 2 - Ion radiographs of (a) Gammex inserts for various beam spacings and (b) low contrast modules.

Conclusion:

This work illustrates the enhanced resolution and contrast of integrated mode carbon radiographs over their proton counterparts, with cRads achieving up to 5 lp/cm resolution and resolving 3 mm WET variations. However, proton radiographs are still useful, as they maintain high WET accuracy and deliver image quality within acceptable bounds. Given the broader accessibility and adoption of proton beam therapy as well as the higher image quality attainable with cRads, future studies include both the use of cRads and pRads for rapid fluoroscopic imaging and investigating their use in adaptive workflows and ion therapy QA.

Keywords: proton imaging, carbon imaging, ion radiograph