Evaluation of MRI acquisition workflow with lean six sigma method: case study of liver and knee examinations

AJR. American Journal of Roentgenology
Christopher J RothElmar M Merkle

Abstract

The purpose of this investigation was to assess workflow for medical imaging studies, specifically comparing liver and knee MRI examinations by use of the Lean Six Sigma methodologic framework. The hypothesis tested was that the Lean Six Sigma framework can be used to quantify MRI workflow and to identify sources of inefficiency to target for sequence and protocol improvement. Audio-video interleave streams representing individual acquisitions were obtained with graphic user interface screen capture software in the examinations of 10 outpatients undergoing MRI of the liver and 10 outpatients undergoing MRI of the knee. With Lean Six Sigma methods, the audio-video streams were dissected into value-added time (true image data acquisition periods), business value-added time (time spent that provides no direct patient benefit but is requisite in the current system), and non-value-added time (scanner inactivity while awaiting manual input). For overall MRI table time, value-added time was 43.5% (range, 39.7-48.3%) of the time for liver examinations and 89.9% (range, 87.4-93.6%) for knee examinations. Business value-added time was 16.3% of the table time for the liver and 4.3% of the table time for the knee examinations. Non-value-ad...Continue Reading

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Citations

Nov 28, 2012·Journal of Digital Imaging·Li ZhangKlaus Jochen Klose
Feb 11, 2012·Radiographics : a Review Publication of the Radiological Society of North America, Inc·Jonathan B KruskalPhillip M Boiselle
Jul 3, 2013·Radiographics : a Review Publication of the Radiological Society of North America, Inc·Carla J ShahMelissa S DuBois
May 11, 2016·Radiographics : a Review Publication of the Radiological Society of North America, Inc·Yvonne Y CheungTomiwa O Osunkoya
Aug 24, 2016·Abdominal Radiology·Jessica Schreiber-Zinaman, Andrew B Rosenkrantz
Nov 8, 2016·Journal of the American College of Radiology : JACR·Devon Klein, Vandana Khan
Jul 21, 2017·AJR. American Journal of Roentgenology·Kevin BekerKoenraad J Mortele
Apr 27, 2018·Investigative Radiology·Daniel StockerCaecilia S Reiner
Feb 27, 2019·AJR. American Journal of Roentgenology·Michael P RechtRoy Wiggins
Mar 23, 2019·Radiographics : a Review Publication of the Radiological Society of North America, Inc·Rodrigo CanellasDushyant V Sahani
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Jul 28, 2019·Plastic and Reconstructive Surgery·Christopher D FunderburkJohn F Nigriny
Jan 8, 2021·Radiographics : a Review Publication of the Radiological Society of North America, Inc·Daniel S BorWendolyn S Gozansky
Feb 4, 2021·RöFo : Fortschritte auf dem Gebiete der Röntgenstrahlen und der Nuklearmedizin·Alex FrydrychowiczThomas Amthor

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