File Download
  Links for fulltext
     (May Require Subscription)
Supplementary

Article: Verification Of Measurements Of Lumbar Spinal Dimensions In T1- And T2-weighted Magnetic Resonance Imaging Sequences

TitleVerification Of Measurements Of Lumbar Spinal Dimensions In T1- And T2-weighted Magnetic Resonance Imaging Sequences
Authors
Issue Date2014
PublisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/spinee
Citation
The Spine Journal, 2014, v. 14 n. 8, p. 1476-1483 How to Cite?
AbstractBACKGROUND CONTEXT: Magnetic resonance imaging (MRI) is commonly used to assess patients with lumbar spinal stenosis. No single MRI sequence has been shown to be superior in spinal canal measurements. There are also cost concerns for the increased clinical and research use of MRI. Using only a single sequence may lower the financial burden; however, this requires spinal canal measurements in both T1 and T2 MRI to be reliable. Evidence for this is currently lacking. PURPOSE: The aim of this study was to determine the intra- and inter-reader reliability of MRI measurements of the lumbar spine and the reliability of measurements using T1- and T2-weighted MRI films. STUDY DESIGN/SETTING: Retrospective study. PATIENT SAMPLE: Forty-two randomly selected patients who underwent spinal stenosis surgery. OUTCOME MEASURES: Lumbar spinal canal measurements and reliability analysis between T1- and T2-weighted MRI. METHODS: Qualitative ratings of MRI features were performed according to previously published criteria by 2 independent readers (JP-YC, HS). Measurements in axial scan included midline anteroposterior (AP) vertebral body diameter, midvertebral body width, midline AP spinal canal diameter, midline AP dural sac diameter, spinal canal width/interpedicular distance, pedicle width (right and left), and lamina angle. Measurements in the sagittal scan included midline AP body diameter, midvertebral body height, and AP spinal canal diameter. Cronbach alpha was used to characterize intra- and inter-reader reliability for qualitative rating data. Similarly, T1 and T2 comparison also was performed in the same manner. RESULTS: Good to excellent intra- and interobserver reliability was obtained for all measurements. Reliability analysis of all T1 and T2 measurements was excellent. CONCLUSIONS: Either T1 or T2 images can be used for measurements of spinal canal dimensions. These findings are of importance, as not every patient undergoing preoperative MRI assessment will necessarily have both sequences performed and only a single sequence is required for research studies. Our findings are also of relevance in measurement of lumbar canal diameters.
Persistent Identifierhttp://hdl.handle.net/10722/197610
ISSN
2015 Impact Factor: 2.66
2015 SCImago Journal Rankings: 1.153

 

DC FieldValueLanguage
dc.contributor.authorCheung, JPYen_US
dc.contributor.authorShigematsu, Hen_US
dc.contributor.authorCheung, KMCen_US
dc.date.accessioned2014-05-29T08:31:14Z-
dc.date.available2014-05-29T08:31:14Z-
dc.date.issued2014en_US
dc.identifier.citationThe Spine Journal, 2014, v. 14 n. 8, p. 1476-1483en_US
dc.identifier.issn1529-9430-
dc.identifier.urihttp://hdl.handle.net/10722/197610-
dc.description.abstractBACKGROUND CONTEXT: Magnetic resonance imaging (MRI) is commonly used to assess patients with lumbar spinal stenosis. No single MRI sequence has been shown to be superior in spinal canal measurements. There are also cost concerns for the increased clinical and research use of MRI. Using only a single sequence may lower the financial burden; however, this requires spinal canal measurements in both T1 and T2 MRI to be reliable. Evidence for this is currently lacking. PURPOSE: The aim of this study was to determine the intra- and inter-reader reliability of MRI measurements of the lumbar spine and the reliability of measurements using T1- and T2-weighted MRI films. STUDY DESIGN/SETTING: Retrospective study. PATIENT SAMPLE: Forty-two randomly selected patients who underwent spinal stenosis surgery. OUTCOME MEASURES: Lumbar spinal canal measurements and reliability analysis between T1- and T2-weighted MRI. METHODS: Qualitative ratings of MRI features were performed according to previously published criteria by 2 independent readers (JP-YC, HS). Measurements in axial scan included midline anteroposterior (AP) vertebral body diameter, midvertebral body width, midline AP spinal canal diameter, midline AP dural sac diameter, spinal canal width/interpedicular distance, pedicle width (right and left), and lamina angle. Measurements in the sagittal scan included midline AP body diameter, midvertebral body height, and AP spinal canal diameter. Cronbach alpha was used to characterize intra- and inter-reader reliability for qualitative rating data. Similarly, T1 and T2 comparison also was performed in the same manner. RESULTS: Good to excellent intra- and interobserver reliability was obtained for all measurements. Reliability analysis of all T1 and T2 measurements was excellent. CONCLUSIONS: Either T1 or T2 images can be used for measurements of spinal canal dimensions. These findings are of importance, as not every patient undergoing preoperative MRI assessment will necessarily have both sequences performed and only a single sequence is required for research studies. Our findings are also of relevance in measurement of lumbar canal diameters.-
dc.languageengen_US
dc.publisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/spinee-
dc.relation.ispartofThe Spine Journalen_US
dc.rightsNOTICE: this is the author’s version of a work that was accepted for publication in The Spine Journal. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in The Spine Journal, 2014, v. 14 n. 8, p. 1476-1483. DOI: 10.1016/j.spinee.2013.08.054-
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.titleVerification Of Measurements Of Lumbar Spinal Dimensions In T1- And T2-weighted Magnetic Resonance Imaging Sequencesen_US
dc.typeArticleen_US
dc.identifier.emailCheung, JPY: jcheung98@hotmail.comen_US
dc.identifier.emailCheung, KMC: cheungmc@hku.hken_US
dc.identifier.authorityCheung, JPY=rp01685en_US
dc.identifier.authorityCheung, KMC=rp00387en_US
dc.description.naturepostprint-
dc.identifier.doi10.1016/j.spinee.2013.08.054-
dc.identifier.pmid24314906-
dc.identifier.hkuros228883en_US
dc.identifier.volume14-
dc.identifier.issue8-
dc.identifier.spage1476-
dc.identifier.epage1483-
dc.publisher.placeNetherlands-

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats