Initial investigations of scatter cross-talk in simultaneous biplane high-speed 1000 frames per second neuro-angiography using Monte Carlo simulations

J. Troville; R. S. Dhonde; A. Shields; S. Rudin; D. R. Bednarek

doi:10.1117/12.2612951

4 April 2022 Initial investigations of scatter cross-talk in simultaneous biplane high-speed 1000 frames per second neuro-angiography using Monte Carlo simulations

J. Troville, R. S. Dhonde, A. Shields, S. Rudin, D. R. Bednarek

Author Affiliations +

Proceedings Volume 12031, Medical Imaging 2022: Physics of Medical Imaging; 1203145 (2022) https://doi.org/10.1117/12.2612951
Event: SPIE Medical Imaging, 2022, San Diego, California, United States

Conference Poster

Abstract

New photon-counting detectors (PCD) from Direct Conversion facilitate up to 1000 frames per second and 1 ms frame-acquisition times. When using these detectors for biplane contrast-media tracking in neuro-angiographic procedures, simultaneous acquisitions are utilized and cross-scatter between planes could degrade image quality. To quantify cross-scatter contributions, we model simultaneous biplane high-speed neuro-angiography in EGSnrc using the Zubal head phantom. Results indicate an increase in scatter due to cross-talk ranging from 4%-56% for AP projections and 48%-71% for lateral projections depending on detector orientation. This increase in scatter can be mitigated using anti-scatter grids, energy thresholding and increased air gaps.

Conference Presentation

Citation Download Citation

J. Troville, R. S. Dhonde, A. Shields, S. Rudin, and D. R. Bednarek "Initial investigations of scatter cross-talk in simultaneous biplane high-speed 1000 frames per second neuro-angiography using Monte Carlo simulations", Proc. SPIE 12031, Medical Imaging 2022: Physics of Medical Imaging, 1203145 (4 April 2022); https://doi.org/10.1117/12.2612951

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