Poster - Thurs Eve-16: Just-in-time tomography (JiTT).

Area of Science:

• Medical Physics
• Radiotherapy Technology
• Medical Imaging

Background:

• Soft-tissue target motion presents a significant challenge in high-precision radiation therapy.
• Current image-guided radiation therapy relies on cone beam computed tomography (CBCT), which has limitations in imaging intrafraction motion due to long acquisition times.

Purpose of the Study:

• To introduce and investigate the feasibility of a novel imaging concept, just-in-time tomography (JiTT), for image-guided radiation therapy.
• To address the inadequacy of existing methods for capturing real-time target motion during radiation delivery.

Main Methods:

• Proposed a new system designed to achieve just-in-time tomography (JiTT).
• Investigated the feasibility of the proposed JiTT system for generating rapid tomographical and beam's-eye-view images.
• Focused on imaging soft-tissue targets with intrafraction motion.

Main Results:

• JiTT significantly reduces image acquisition time compared to conventional CBCT.
• The proposed system is capable of generating necessary tomographical and beam's-eye-view images quickly.
• Demonstrated the potential for JiTT to provide real-time imaging for radiation therapy guidance.

Conclusions:

• Just-in-time tomography (JiTT) is a promising advancement for image-guided radiation therapy.
• JiTT overcomes the limitations of CBCT in addressing intrafraction motion.
• The developed system shows feasibility for real-time imaging in radiation therapy, enhancing treatment precision.