The aim of the Institute of Physics and Engineering in Medicine IPEM is to promote the advancement of physics and engineering applied to medicine and biology for the public benefit. Its members are professionals working in healthcare, education, industry and research. IPEM publishes scientific journals and books and organises conferences to disseminate knowledge and support members in their development.
It sets and advises on standards for the practice, education and training of scientists and engineers working in healthcare to secure an effective and appropriate workforce.
Previous issue Next issue. Open all abstracts , in this issue. Four-dimensional computed tomography 4DCT imaging consists in reconstructing a CT acquisition into multiple phases to track internal organ and tumor motion. It is commonly used in radiotherapy treatment planning to establish planning target volumes. However, 4DCT increases protocol complexity, may not align with patient breathing during treatment, and lead to higher radiation delivery.
In this study, we propose a deep synthesis method to generate pseudo respiratory CT phases from static images for motion-aware treatment planning.
The model produces patient-specific deformation vector fields DVFs by conditioning synthesis on external patient surface-based estimation, mimicking respiratory monitoring devices. A key methodological contribution is to encourage DVF realism through supervised DVF training while using an adversarial term jointly not only on the warped image but also on the magnitude of the DVF itself.
