Genesis Cancer Care WA

Wembley, Australia

Genesis Cancer Care WA

Wembley, Australia
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Guilfoile C.,Genesis Cancer Care WA | Guilfoile C.,University of Western Australia | Rampant P.,Genesis Cancer Care WA | House M.,University of Western Australia
Australasian Physical and Engineering Sciences in Medicine | Year: 2017

The presence of metal artefacts in computed tomography (CT) create issues in radiation oncology. The loss of anatomical information and incorrect Hounsfield unit (HU) values produce inaccuracies in dose calculations, providing suboptimal patient treatment. Metal artefact reduction (MAR) algorithms were developed to combat these problems. This study provides a qualitative and quantitative analysis of the “Smart MAR” software (General Electric Healthcare, Chicago, IL, USA), determining its usefulness in a clinical setting. A detailed analysis was conducted using both patient and phantom data, noting any improvements in HU values and dosimetry with the GE-MAR enabled. This study indicates qualitative improvements in severity of the streak artefacts produced by metals, allowing for easier patient contouring. Furthermore, the GE-MAR managed to recover previously lost anatomical information. Additionally, phantom data showed an improvement in HU value with GE-MAR correction, producing more accurate point dose calculations in the treatment planning system. Overall, the GE-MAR is a useful tool and is suitable for clinical environments. © 2017 Australasian College of Physical Scientists and Engineers in Medicine

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