Repeatability of apparent diffusion coefficient and intravoxel incoherent motion parameters at 3.0 Tesla in orbital lesions.
Objectives: To evaluate repeatability of intravoxel incoherent motion (IVIM) diffusion-weighted imaging (DWI) parameters in the orbit.Methods: From December 2015 to March 2016, 22 patients were scanned twice using an IVIM sequence with 15b values (0-2,000 s/mm2) at 3.0T. Two readers independently de...
| Publicado en: | European Radiology Vol. 27; no. 12; pp. 5094 - 5104 |
|---|---|
| Autores principales: | , , , , , , , , , |
| Formato: | Journal Article |
| Publicado: |
Springer Nature
Dec2017
|
| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=126091237&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 126091237 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 09387994 NPH jtl: European Radiology issn: 09387994 maglogo: N pubinfo: dt: Dec2017 vid: 27 iid: 12 pid: 237 pub: Springer Nature place: New York, New York artinfo: ui: 126091237 126091237 144046068 NLM28677061 10.1007/s00330-017-4933-6 NLM28677061 126091237 ppf: 5094 ppct: 10 formats: fmt: @attributes: type: P tig: atl: Repeatability of apparent diffusion coefficient and intravoxel incoherent motion parameters at 3.0 Tesla in orbital lesions. aug: au: Lecler, Augustin Savatovsky, Julien Balvay, Daniel Zmuda, Mathieu Sadik, Jean-Claude Galatoire, Olivier Charbonneau, Frédérique Bergès, Olivier Picard, Hervé Fournier, Laure Charbonneau, Frédérique Bergès, Olivier Picard, Hervé affil: Department of Radiology , Fondation Ophtalmologique Adolphe de Rothschild , 29 rue Manin 75019 Paris France sug: subj: Magnetic Resonance Imaging Methods Orbital Neoplasms Female Middle Age Observer Bias Male Reproducibility of Results Prospective Studies Motion Adult Short Portable Mental Status Questionnaire Middle Aged: 45-64 years Adult: 19-44 years Female Male ab: Objectives: To evaluate repeatability of intravoxel incoherent motion (IVIM) diffusion-weighted imaging (DWI) parameters in the orbit.Methods: From December 2015 to March 2016, 22 patients were scanned twice using an IVIM sequence with 15b values (0-2,000 s/mm2) at 3.0T. Two readers independently delineated regions of interest in an orbital mass and in different intra-orbital and extra-orbital structures. Short-term test-retest repeatability and inter-observer agreement were assessed using the intra-class correlation coefficient (ICC), the coefficient of variation (CV) and Bland-Altman limits of agreements (BA-LA).Results: Test-retest repeatability of IVIM parameters in the orbital mass was satisfactory for ADC and D (mean CV 12% and 14%, ICC 95% and 93%), poor for f and D*(means CV 43% and 110%, ICC 90% and 65%). Inter-observer repeatability agreement was almost perfect in the orbital mass for all the IVIM parameters (ICC = 95%, 93%, 94% and 90% for ADC, D, f and D*, respectively).Conclusions: IVIM appeared to be a robust tool to measure D in orbital lesions with good repeatability, but this approach showed a poor repeatability of f and D*.Key Points: • IVIM technique is feasible in the orbit. • IVIM has a good-acceptable repeatability of D (CV range 12-25 %). • IVIM interobserver repeatability agreement is excellent (ICC range 90-95 %). • f or D* provide higher test-retest and interobserver variabilities. pubtype: Academic Journal doctype: Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
|---|