Stereoscopic portable hybrid gamma imaging for source depth estimation
journal contributionposted on 16.03.2021, 09:04 by Sarah Bugby, John Lees, William McKnight, Numan Dawood
Advances in gamma imaging technology mean that is now technologically feasible to conduct stereoscopic gamma imaging in a hand-held unit. This paper derives an analytical model for stereoscopic pinhole imaging which can be used to predict performance for a wide range of camera configurations. Investigation of this concept through Monte Carlo and benchtop studies, for an example configuration, shows camera-source distance measurements with a mean deviation between calculated and actual distances of <5 mm for imaging distances of 50 mm to 250 mm. By combining this technique with stereoscopic optical imaging, we are then able to calculate the depth of a radioisotope source beneath a surface without any external positional tracking. This new hybrid technique has the potential to improve surgical localisation in procedures such as sentinel lymph node biopsy.
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Science and Technologies Facilities Council (STFC) grants – CLASP ST/M007820/1 and FoF ST/S000135/1 – and fellowship – ST/R00501X/1
Scholarship programme from Baghdad University, Ministry of Higher Education and Scientific Research, Iraq (2015- 2019)
Leicester Royal Infirmary, University Hospitals of Leicester NHS Trust