Other publication
Bioimpedance-based respiratory gating method for oncologic positron emission tomography (PET) imaging with first clinical results
Authors: Koivumaki T, Vauhkonen M, Teuho J, Teras M, Hakulinen MA
Publication year: 2013
Journal: Journal of Physics: Conference Series
Book title : x
Journal name in source: XV INTERNATIONAL CONFERENCE ON ELECTRICAL BIO-IMPEDANCE (ICEBI) & XIV CONFERENCE ON ELECTRICAL IMPEDANCE TOMOGRAPHY (EIT)
Journal acronym: J PHYS CONF SER
Article number: UNSP 012037
Volume: 434
Number of pages: 4
ISSN: 1742-6588
DOI: https://doi.org/10.1088/1742-6596/434/1/012037
Abstract
Respiratory motion may cause significant image artefacts in positron emission tomography/computed tomography (PET/CT) imaging. This study introduces a new bioimpedance-based gating method for minimizing respiratory artefacts. The method was studied in 12 oncologic patients by evaluating the following three parameters: maximum metabolic activity of radiopharmaceutical accumulations, the size of these targets as well as their target-to-background ratio. The bioimpedance-gated images were compared with non-gated images and images that were gated with a reference method, chest wall motion monitoring by infrared camera. The bioimpedance method showed clear improvement as increased metabolic activity and decreased target volume compared to non-gated images and produced consistent results with the reference method. Thus, the method may have great potential in the future of respiratory gating in nuclear medicine imaging.
Respiratory motion may cause significant image artefacts in positron emission tomography/computed tomography (PET/CT) imaging. This study introduces a new bioimpedance-based gating method for minimizing respiratory artefacts. The method was studied in 12 oncologic patients by evaluating the following three parameters: maximum metabolic activity of radiopharmaceutical accumulations, the size of these targets as well as their target-to-background ratio. The bioimpedance-gated images were compared with non-gated images and images that were gated with a reference method, chest wall motion monitoring by infrared camera. The bioimpedance method showed clear improvement as increased metabolic activity and decreased target volume compared to non-gated images and produced consistent results with the reference method. Thus, the method may have great potential in the future of respiratory gating in nuclear medicine imaging.
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