Assessing the Impact of a Virtual Reality Headset on PET/CT Image Quality

Onderzoeksoutput: Poster


Aim: Patients with claustrophobia or general anxiety may experience suboptimal imaging results due to the need to accommodate their comfort and wellbeing during the examination. This is especially challenging in PET and SPECT imaging due to the long acquisition times and design of the system (narrow bore or closely placed detectors). To enhance patient experience and reduce anxiety without relying on pharmacological sedation, the use of a virtual reality (VR) headset has been successfully applied in the emergency department. However, the impact of the VR headset on imaging quality and quantification remains unclear, which has limited its adoption in nuclear medicine routine.
Materials and Methods: In this work, we employed a multi-modality approach utilizing both an anthropomorphic head phantom and a uniform standardized uptake (SUV) phantom to assess the impact of the VR headset on image quality and quantification. As such, we compared the Hounsfield Units (HU) and SUV for both phantoms with and without the VR headset mounted during the acquisition.
Results: Analysis showed no significant difference in PET image quantification when slices at the same level (z-axis) of the VR headset were compared to the non-VR phantom (p=0.28). However, streak artefacts and significant changes in HU were observed in the CT images. Soft volume regions appear to be more affected than boney regions: the mean HU value (HUavg) for the whole brain increased by 10.89%, while the HUavg for the skull decreased by 3.58%. The impact on the CT image appears to be dependent on the distance to the battery pack at the back of the head. The HUavg in the cerebellum increased by 0.83%, while the HUavg in the affected parietal/occipital lobe increased by 48.24%. Slices outside of the level (z-axis) of the VR headset were not affected: the HUavg of the submandibular gland decreased by 0.26%.
Conclusion: This study demonstrates the feasibility of using a VR headset in PET/CT imaging without compromising PET quantification. The CT images obtained with the VR headset are adequate for attenuation correction. However, further optimization may be needed if the CT images are intended for diagnostic purposes, different positioning and reconstruction techniques should be considered. By providing a more comfortable imaging experience for patients and staff, the use of a VR headset has the potential to improve patient outcomes and enhance the overall diagnostic quality of PET/CT imaging of patients suffering from claustrophobia or general anxiety.
Originele taal-2English
StatusPublished - 22 apr 2023
EvenementBELNUC'23 -
Duur: 22 apr 202322 apr 2023


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