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Proceedings Paper

A new imaging method for real-time 3D x-ray reconstruction
Author(s): Murat Tahtali; Sajib K. Saha; Andrew J. Lambert; Mark R. Pickering
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Paper Abstract

Existing Computed Tomography (CT) systems are vulnerable to internal organ movements. This drawback is compensated by extra exposures and digital processing. CT being a radiation dose intensive modality, it is imperative to limit the patient’s exposure to X-ray radiation, if only by removing the necessity to take extra exposures. A multiple pinhole camera, akin to optical lightfield imaging, to acquire simultaneously multiple X-ray projections is presented. This new method allows a single snapshot acquisition of all necessary projections for 3D reconstruction. It will also allow the real-time dynamic 3D X-ray reconstruction of moving organs, as it requires no scanning and no moving parts in its final implementation. A proof-of-concept apparatus that simulates the intended process was built and parallaxed images were obtained with minor processing. Synthetic 3D reconstruction tests are also presented.

Paper Details

Date Published: 6 March 2013
PDF: 9 pages
Proc. SPIE 8668, Medical Imaging 2013: Physics of Medical Imaging, 86685G (6 March 2013); doi: 10.1117/12.2006397
Show Author Affiliations
Murat Tahtali, Univ. of New South Wales, Canberra (Australia)
Sajib K. Saha, Univ. of New South Wales, Canberra (Australia)
Andrew J. Lambert, Univ. of New South Wales, Canberra (Australia)
Mark R. Pickering, Univ. of New South Wales, Canberra (Australia)

Published in SPIE Proceedings Vol. 8668:
Medical Imaging 2013: Physics of Medical Imaging
Robert M. Nishikawa; Bruce R. Whiting; Christoph Hoeschen, Editor(s)

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