Parallel Imaging–Based Reduction of Acoustic Noise for Clinical Magnetic Resonance Imaging

OBJECTIVESThe objective of this study was to demonstrate the feasibility of improving perceived acoustic comfort for a standard clinical magnetic resonance imaging protocol via gradient wave form optimization and validate parallel imaging as a means to achieve a further reduction of acoustic noise....

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Veröffentlicht in:Investigative radiology 2014-09, Vol.49 (9), p.620-626
Hauptverfasser: Pierre, Eric Y, Grodzki, David, Aandal, Gunhild, Heismann, Bjoern, Badve, Chaitra, Gulani, Vikas, Sunshine, Jeffrey L, Schluchter, Mark, Liu, Kecheng, Griswold, Mark A
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container_end_page 626
container_issue 9
container_start_page 620
container_title Investigative radiology
container_volume 49
creator Pierre, Eric Y
Grodzki, David
Aandal, Gunhild
Heismann, Bjoern
Badve, Chaitra
Gulani, Vikas
Sunshine, Jeffrey L
Schluchter, Mark
Liu, Kecheng
Griswold, Mark A
description OBJECTIVESThe objective of this study was to demonstrate the feasibility of improving perceived acoustic comfort for a standard clinical magnetic resonance imaging protocol via gradient wave form optimization and validate parallel imaging as a means to achieve a further reduction of acoustic noise. MATERIALS AND METHODSThe gradient wave forms of a standard T2 axial turbo spin-echo (TSE) sequence in head examinations were modified for acoustic performance while attempting to keep the total acquisition and inter-echo spacing the same. Parallel imaging was then used to double the inter-echo spacing and allow further wave form optimization. Along with comparative acoustic noise measurements, a statistical analysis of radiologist scoring was conducted on volumes from standard and modified sequences acquired from 10 patients after informed consent was obtained. RESULTSCompared with TSE, significant improvement of acoustic comfort was measured for modified-sequences quiet TSE and quiet TSE with generalized autocalibrating partially parallel acquisitions (P = 0.0034 and P = 0.0003, respectively), and no statistically significant difference in diagnostic quality was observed without the use of parallel imaging. CONCLUSIONSStandard clinical magnetic resonance imaging protocols can be made quieter through adequate gradient wave form optimization. In scans with high signal-to-noise ratio, parallel imaging can be used to further reduce acoustic noise.
doi_str_mv 10.1097/RLI.0000000000000062
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In scans with high signal-to-noise ratio, parallel imaging can be used to further reduce acoustic noise.</description><identifier>ISSN: 0020-9996</identifier><identifier>EISSN: 1536-0210</identifier><identifier>DOI: 10.1097/RLI.0000000000000062</identifier><identifier>PMID: 24743588</identifier><language>eng</language><publisher>United States: by Lippincott Williams &amp; Wilkins</publisher><subject>Adult ; Aged ; Feasibility Studies ; Female ; Humans ; Magnetic Resonance Imaging - methods ; Male ; Middle Aged ; Signal-To-Noise Ratio ; Young Adult</subject><ispartof>Investigative radiology, 2014-09, Vol.49 (9), p.620-626</ispartof><rights>2014 by Lippincott Williams &amp; Wilkins</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c4922-d8b7d9bb60f737ef0adfedfc286212264b1ab749b089e749b13a5fee29bafa823</citedby><cites>FETCH-LOGICAL-c4922-d8b7d9bb60f737ef0adfedfc286212264b1ab749b089e749b13a5fee29bafa823</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>315,782,786,27931,27932</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/24743588$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Pierre, Eric Y</creatorcontrib><creatorcontrib>Grodzki, David</creatorcontrib><creatorcontrib>Aandal, Gunhild</creatorcontrib><creatorcontrib>Heismann, Bjoern</creatorcontrib><creatorcontrib>Badve, Chaitra</creatorcontrib><creatorcontrib>Gulani, Vikas</creatorcontrib><creatorcontrib>Sunshine, Jeffrey L</creatorcontrib><creatorcontrib>Schluchter, Mark</creatorcontrib><creatorcontrib>Liu, Kecheng</creatorcontrib><creatorcontrib>Griswold, Mark A</creatorcontrib><title>Parallel Imaging–Based Reduction of Acoustic Noise for Clinical Magnetic Resonance Imaging</title><title>Investigative radiology</title><addtitle>Invest Radiol</addtitle><description>OBJECTIVESThe objective of this study was to demonstrate the feasibility of improving perceived acoustic comfort for a standard clinical magnetic resonance imaging protocol via gradient wave form optimization and validate parallel imaging as a means to achieve a further reduction of acoustic noise. 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subjects Adult
Aged
Feasibility Studies
Female
Humans
Magnetic Resonance Imaging - methods
Male
Middle Aged
Signal-To-Noise Ratio
Young Adult
title Parallel Imaging–Based Reduction of Acoustic Noise for Clinical Magnetic Resonance Imaging
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