doi:10.1088/1361-6560/abd955

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Publication Date

Thu Feb 11 2021

Journal Name

Physics In Medicine & Biology

Volume

66

DOI

10.1088/1361-6560/abd955

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Stereoscopic portable hybrid gamma imaging for source depth estimation

Numan

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Abstract<p>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 50–250 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.</p>

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