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Visual demonstration of aliasing in planar nuclear medicine imaging: The importance of correct collimator selection
J Elliott1, P O'Sullivan2, T Crooker2
1School of Allied Health Professions, Canterbury Christ Church University, Kent, UK; Nuclear Medicine, Maidstone and Tunbridge Wells NHS Trust, Maidstone, UK.
Abstract:
Aliasing artefact is an imaging distortion phenomenon experienced in a wide variety of medical imaging modalities. This case report illustrates its occurrence during planar gamma camera nuclear medicine imaging under non-clinical conditions using experimental incorrect selection of collimators. In accordance with provision of an optimal service, nuclear medicine practitioners are recommended to have sufficient technical expertise along with knowledge of gamma camera operation. The purpose, construction and interaction of collimators used during planar imaging are presented herein with specific regards to the aliasing phenomenon. Furthermore, this case report recommends the careful planning of worklists to avoid frequent collimator changes to reduce the risk of human error.
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