Dataset Information

Concept of an upright wearable positron emission tomography imager in humans.

ABSTRACT:

Background

Positron Emission Tomography (PET) is traditionally used to image patients in restrictive positions, with few devices allowing for upright, brain-dedicated imaging. Our team has explored the concept of wearable PET imagers which could provide functional brain imaging of freely moving subjects. To test feasibility and determine future considerations for development, we built a rudimentary proof-of-concept prototype (Helmet_PET) and conducted tests in phantoms and four human volunteers.

Methods

Twelve Silicon Photomultiplier-based detectors were assembled in a ring with exterior weight support and an interior mechanism that could be adjustably fitted to the head. We conducted brain phantom tests as well as scanned four patients scheduled for diagnostic F(18-) FDG PET/CT imaging. For human subjects the imager was angled such that field of view included basal ganglia and visual cortex to test for typical resting-state pattern. Imaging in two subjects was performed ~4 hr after PET/CT imaging to simulate lower injected F(18-) FDG dose by taking advantage of the natural radioactive decay of the tracer (F(18) half-life of 110 min), with an estimated imaging dosage of 25% of the standard.

Results

We found that imaging with a simple lightweight ring of detectors was feasible using a fraction of the standard radioligand dose. Activity levels in the human participants were quantitatively similar to standard PET in a set of anatomical ROIs. Typical resting-state brain pattern activation was demonstrated even in a 1 min scan of active head rotation.

Conclusion

To our knowledge, this is the first demonstration of imaging a human subject with a novel wearable PET imager that moves with robust head movements. We discuss potential research and clinical applications that will drive the design of a fully functional device. Designs will need to consider trade-offs between a low weight device with high mobility and a heavier device with greater sensitivity and larger field of view.

SUBMITTER: Bauer CE

PROVIDER: S-EPMC5036439 | biostudies-literature | 2016 Sep

REPOSITORIES: biostudies-literature

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Publications

Concept of an upright wearable positron emission tomography imager in humans.

Bauer Christopher E CE Brefczynski-Lewis Julie J Marano Gary G Mandich Mary-Beth MB Stolin Alexander A Martone Peter P Lewis James W JW Jaliparthi Gangadhar G Raylman Raymond R RR Majewski Stan S

Brain and behavior 20160805 9

<h4>Background</h4>Positron Emission Tomography (PET) is traditionally used to image patients in restrictive positions, with few devices allowing for upright, brain-dedicated imaging. Our team has explored the concept of wearable PET imagers which could provide functional brain imaging of freely moving subjects. To test feasibility and determine future considerations for development, we built a rudimentary proof-of-concept prototype (Helmet_PET) and conducted tests in phantoms and four human vol ...[more]

PMID: 27688946

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Dataset Information

Concept of an upright wearable positron emission tomography imager in humans.

Background

Methods

Results

Conclusion

Publications

Concept of an upright wearable positron emission tomography imager in humans.

Similar Datasets

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