Highest Resolution In Vivo Human Brain MRI Using Prospective Motion Correction
Autor: | Oliver Speck, Maxim Zaitsev, Frank Godenschweger, Peter Schulze, Daniel Stucht, K. Appu Danishad |
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Jazyk: | angličtina |
Rok vydání: | 2015 |
Předmět: |
Computer science
Image quality lcsh:Medicine Image processing 030218 nuclear medicine & medical imaging Motion 03 medical and health sciences physiology [Brain] methods [Magnetic Resonance Imaging] 0302 clinical medicine Signal-to-noise ratio Neuroimaging methods [Image Processing Computer-Assisted] physiology [Movement] medicine Humans Computer vision ddc:610 Prospective Studies lcsh:Science Image resolution Multidisciplinary medicine.diagnostic_test business.industry Respiration lcsh:R Magnetic resonance imaging methods [Equipment Design] Calibration Fixation (visual) lcsh:Q Artificial intelligence Artifacts Nuclear medicine business 030217 neurology & neurosurgery Preclinical imaging Research Article |
Zdroj: | PLoS ONE, Vol 10, Iss 7, p e0133921 (2015) PLoS ONE PLOS ONE 10(7), e0133921 (2015). doi:10.1371/journal.pone.0133921 |
ISSN: | 1932-6203 |
Popis: | High field MRI systems, such as 7 Tesla (T) scanners, can deliver higher signal to noise ratio (SNR) than lower field scanners and thus allow for the acquisition of data with higher spatial resolution, which is often demanded by users in the fields of clinical and neuroscientific imaging. However, high resolution scans may require long acquisition times, which in turn increase the discomfort for the subject and the risk of subject motion. Even with a cooperative and trained subject, involuntary motion due to heartbeat, swallowing, respiration and changes in muscle tone can cause image artifacts that reduce the effective resolution. In addition, scanning with higher resolution leads to increased sensitivity to even very small movements. Prospective motion correction (PMC) at 3T and 7T has proven to increase image quality in case of subject motion. Although the application of prospective motion correction is becoming more popular, previous articles focused on proof of concept studies and technical descriptions, whereas this paper briefly describes the technical aspects of the optical tracking system, marker fixation and cross calibration and focuses on the application of PMC to very high resolution imaging without intentional motion. In this study we acquired in vivo MR images at 7T using prospective motion correction during long acquisitions. As a result, we present images among the highest, if not the highest resolution of in vivo human brain MRI ever acquired. |
Databáze: | OpenAIRE |
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