{"id":14384,"date":"2021-07-16T10:48:06","date_gmt":"2021-07-16T10:48:06","guid":{"rendered":"https:\/\/interhospi.com\/?p=14384"},"modified":"2021-07-16T10:48:06","modified_gmt":"2021-07-16T10:48:06","slug":"new-super-resolution-technique-enables-more-detailed-brain-imaging","status":"publish","type":"post","link":"https:\/\/interhospi.com\/new-super-resolution-technique-enables-more-detailed-brain-imaging\/","title":{"rendered":"New super-resolution technique enables more detailed brain imaging"},"content":{"rendered":"
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New super-resolution technique enables more detailed brain imaging<\/h1>\/ in Featured Articles<\/a> <\/span><\/span><\/header>\n<\/div><\/section>
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A new imaging technique has the potential to detect neurological disorders \u2013 such as Alzheimer\u2019s disease \u2013 at their earliest stages, enabling physicians to diagnose and treat patients more quickly. Termed \u2018super-resolution\u2019, the imaging methodology combines position emission tomography (PET) with an external motion tracking device to create highly detailed images of the brain. This research was presented at the Society of Nuclear Medicine and Molecular Imaging\u2019s 2021 Virtual Annual Meeting.<\/strong><\/p>\n

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In brain PET imaging, the quality of the images is often limited by unwanted movements of the patient during scanning. In this study, researchers utilized super-resolution to harness the typically undesired head motion of subjects to enhance the resolution in brain PET.<\/p>\n

Moving phantom and non-human primate experiments were performed on a PET scanner in conjunction with an external motion tracking device that continuously measured head movement with extremely high precision. Static reference PET acquisitions were also performed without inducing movement. After data from the imaging devices were combined, researchers recovered PET images with noticeably higher resolution than that achieved in the static reference scans.<\/p>\n

\u201cThis work shows that one can obtain PET images with a resolution that outperforms the scanner\u2019s resolution by making use, counterintuitively perhaps, of usually undesired patient motion,\u201d said Yanis Chemli, MSc, PhD, candidate at the Gordon Center for Medical Imaging in Boston, Massachusetts. \u201cOur technique not only compensates for the negative effects of head motion on PET image quality, but it also leverages the increased sampling information associated with imaging of moving targets to enhance the effective PET resolution.\u201d<\/p>\n

While this super-resolution technique has only been tested in preclinical studies, researchers are currently working on extending it to human subjects. Looking to the future, Chemli noted the important impact that super-resolution may have on brain disorders, specifically Alzheimer\u2019s disease.<\/p>\n

\u201cAlzheimer\u2019s disease is characterized by the presence of tangles composed of tau protein. These tangles start accumulating very early on in Alzheimer\u2019s disease \u2013 sometimes decades before symptoms \u2013 in very small regions of the brain. The better we can image these small structures in the brain, the earlier we may be able to diagnose and, perhaps in the future, treat Alzheimer\u2019s disease,\u201d he said.<\/p>\n<\/div><\/section>
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Results of the Hoffman brain phantom study. Top row: same PET slice reconstructed with A) 2 mm static OSEM, B) 1 mm static<\/em>
\nOSEM, C) proposed SR method and D) corresponding CT slice (note that the CT image can be treated as a high-resolution reference).<\/em>
\nMiddle row: zoom on region of interest for corresponding images. Bottom row: Line profiles for corresponding data.<\/em><\/p>\n<\/div><\/section>
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