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Stereoscopic portable hybrid gamma imaging for source depth estimation
journal contributionposted on 07.01.2021, 12:17 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.
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