The use of parallel imaging for MRI assessment of knees in children and adolescents.
Background: Parallel imaging provides faster scanning at the cost of reduced signal-to-noise ratio (SNR) and increased artifacts.Objective: To compare the diagnostic performance of two parallel MRI protocols (PPs) for assessment of pathologic knees using an 8-channel knee coil (reference standard, c...
| Published in: | Pediatric Radiology Vol. 40; no. 3; pp. 284 - 294 |
|---|---|
| Main Authors: | , , , , , , , , , , , , , , , , , |
| Format: | research Journal Article |
| Published: |
Springer Nature
Mar2010
|
| Online Access: | View this record in EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=105316890&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 105316890 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 03010449 O03 jtl: Pediatric Radiology issn: 03010449 maglogo: N pubinfo: dt: Mar2010 vid: 40 iid: 3 pid: 237 pub: Springer Nature place: New York, New York artinfo: ui: 105316890 NLM19949946 2010563676 10.1007/s00247-009-1426-z NLM19949946 105316890 ppf: 284 ppct: 10 formats: fmt: @attributes: type: P tig: atl: The use of parallel imaging for MRI assessment of knees in children and adolescents. aug: au: Doria AS Chaudry GA Nasui C Rayner T Wang C Moineddin R Babyn PS White LM Sussman MS Doria, Andrea S Chaudry, Gulraiz A Nasui, Cristina Rayner, Tammy Wang, Chenghua Moineddin, Rahim Babyn, Paul S White, Larry M Sussman, Marshall S affil: Department of Diagnostic Imaging, Toronto, Canada sug: subj: Algorithms Image Enhancement Methods Joint Diseases Pathology Knee Injuries Pathology Knee Joint Pathology Magnetic Resonance Imaging Methods Adolescence Child Female Human Male Observer Bias Reproducibility of Results Sensitivity and Specificity Single-Blind Studies Time Factors Adolescent: 13-18 years Child: 6-12 years Female Male ab: Background: Parallel imaging provides faster scanning at the cost of reduced signal-to-noise ratio (SNR) and increased artifacts.Objective: To compare the diagnostic performance of two parallel MRI protocols (PPs) for assessment of pathologic knees using an 8-channel knee coil (reference standard, conventional protocol [CP]) and to characterize the SNR losses associated with parallel imaging.Materials and Methods: Two radiologists blindly interpreted 1.5 Tesla knee MRI images in 21 children (mean 13 years, range 9-18 years) with clinical indications for an MRI scan. Sagittal proton density, T2-W fat-saturated FSE, axial T2-W fat-saturated FSE, and coronal T1-W (NEX of 1,1,1) images were obtained with both CP and PP. Images were read for soft tissue and osteochondral findings.Results: There was a 75% decrease in acquisition time using PP in comparison to CP. The CP and PP protocols fell within excellent or upper limits of substantial agreement: CP, kappa coefficient, 0.81 (95% CIs, 0.73-0.89); PP, 0.80-0.81 (0.73-0.89). The sensitivity of the two PPs was similar for assessment of soft (0.98-1.00) and osteochondral (0.89-0.94) tissues. Phantom data indicated an SNR of 1.67, 1.6, and 1.51 (axial, sagittal and coronal planes) between CP and PP scans.Conclusion: Parallel MRI provides a reliable assessment for pediatric knees in a significantly reduced scan time without affecting the diagnostic performance of MRI. pubtype: Academic Journal doctype: research Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
|---|