Abstract:
RATIONALE AND OBJECTIVES:The aim of this study was to assess if graphical user interface screen-capture software applied to a magnetic resonance (MR) hardware console could nonintrusively allow the analysis of discrepancies between expected and experienced MR table time. MATERIALS AND METHODS:Individual MR examination acquisition processes were captured in audio-video interleave streams for 10 patients who underwent comprehensive liver MR imaging. These audio-video streams were dissected into periods of true image data acquisition, scanner activity without direct image data acquisition, and scanner inactivity. RESULTS:Total expected time required for standardized liver MR image acquisition was estimated at 15 minutes. Experienced table times varied highly, ranging from 19:00 to 58:08 minutes. Image data acquisition occurred during approximately 58% (range, 43.3%-73.7%) of overall table time. Image data were obtained approximately 77% (range, 65.6%-87.0%) of the time the scanner spent active. CONCLUSION:Graphical user interface screen-capture software installed on an MR console nonintrusively revealed significant periods of table time spent not obtaining true image data and explained discrepancies between expected and experienced MR table times. Table-time calculations using Digital Imaging and Communications in Medicine image headers and scanner-logged time stamps are underestimations of true table time because they do not take into account some scanner activities not directly leading to image formation.
journal_name
Acad Radioljournal_title
Academic radiologyauthors
Roth CJ,Boll DT,Chea YW,Wall LK,Merkle EMdoi
10.1016/j.acra.2009.05.009subject
Has Abstractpub_date
2009-10-01 00:00:00pages
1286-91issue
10eissn
1076-6332issn
1878-4046pii
S1076-6332(09)00306-7journal_volume
16pub_type
杂志文章abstract:RATIONALE AND OBJECTIVES:Emergency department (ED) patients with acute low back pain (LBP) may present with ambiguous clinical findings that pose diagnostic challenges to exclude cauda equina syndrome (CES). As a proof of concept, we aimed to determine the efficacy of a rapid lumbar spine (LS) magnetic resonance imagin...
journal_title:Academic radiology
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journal_title:Academic radiology
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journal_title:Academic radiology
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pub_type: 杂志文章,meta分析,评审
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journal_title:Academic radiology
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pub_type: 杂志文章
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