PURPOSE: To improve multiple sclerosis (MS) research by introducing a new type of contrast, namely, the combination of fluid-attenuated inversion recovery (FLAIR) data acquired at 3.0 T and 7.0 T susceptibility-weighted imaging (SWI) phase data. The approach of this new contrast is whole-brain coverage with 3.0 T-FLAIR data for lesion detection--currently limited at 7.0 T due to specific absorption rate (SAR) limits--overlaid with high-resolution, small vessel, and iron-related 7.0 T SWI contrast. Lesion analysis in terms of penetrating veins and local iron depositions were performed. MATERIALS AND METHODS: Data from 10 MS patients were acquired at 3.0 T and at 7.0 T. FLAIR data, acquired at 3.0 T, were registered to 7.0 T SWI phase data and SWI image processing was performed using 3.0 T FLAIR data instead of SWI magnitude data. RESULTS: A total of 299 MS plaques were detected in eight MS patients. Penetrating veins were found in 75 MS plaques, iron depositions in 48 MS plaques, and veins accompanied with iron depositions in 44 MS plaques. CONCLUSION: FLAIR-SWI provides radiologically known, hyperintense definition of MS lesions overlaid with high-resolution visualization of iron deposits and venous blood vessels and offers new insights into MS lesions.
PURPOSE: To improve multiple sclerosis (MS) research by introducing a new type of contrast, namely, the combination of fluid-attenuated inversion recovery (FLAIR) data acquired at 3.0 T and 7.0 T susceptibility-weighted imaging (SWI) phase data. The approach of this new contrast is whole-brain coverage with 3.0 T-FLAIR data for lesion detection--currently limited at 7.0 T due to specific absorption rate (SAR) limits--overlaid with high-resolution, small vessel, and iron-related 7.0 T SWI contrast. Lesion analysis in terms of penetrating veins and local iron depositions were performed. MATERIALS AND METHODS: Data from 10 MS patients were acquired at 3.0 T and at 7.0 T. FLAIR data, acquired at 3.0 T, were registered to 7.0 T SWI phase data and SWI image processing was performed using 3.0 T FLAIR data instead of SWI magnitude data. RESULTS: A total of 299 MS plaques were detected in eight MS patients. Penetrating veins were found in 75 MS plaques, iron depositions in 48 MS plaques, and veins accompanied with iron depositions in 44 MS plaques. CONCLUSION: FLAIR-SWI provides radiologically known, hyperintense definition of MS lesions overlaid with high-resolution visualization of iron deposits and venous blood vessels and offers new insights into MS lesions.
Authors: Assunta Dal-Bianco; Simon Hametner; Günther Grabner; Melanie Schernthaner; Claudia Kronnerwetter; Andreas Reitner; Clemens Vass; Karl Kircher; Eduard Auff; Fritz Leutmezer; Karl Vass; Siegfried Trattnig Journal: Eur Radiol Date: 2015-04-23 Impact factor: 5.315
Authors: Àlex Rovira; Mike P Wattjes; Mar Tintoré; Carmen Tur; Tarek A Yousry; Maria P Sormani; Nicola De Stefano; Massimo Filippi; Cristina Auger; Maria A Rocca; Frederik Barkhof; Franz Fazekas; Ludwig Kappos; Chris Polman; David Miller; Xavier Montalban Journal: Nat Rev Neurol Date: 2015-07-07 Impact factor: 42.937
Authors: Thomas Kau; Manuel Taschwer; Hannes Deutschmann; Martina Schönfelder; Jörg R Weber; Klaus A Hausegger Journal: Eur Radiol Date: 2013-02-22 Impact factor: 5.315
Authors: Iris D Kilsdonk; Mike P Wattjes; Alexandra Lopez-Soriano; Joost P A Kuijer; Marcus C de Jong; Wolter L de Graaf; Mandy M A Conijn; Chris H Polman; Peter R Luijten; Jeroen J G Geurts; Mirjam I Geerlings; Frederik Barkhof Journal: Eur Radiol Date: 2013-12-09 Impact factor: 5.315
Authors: Iris D Kilsdonk; Alexandra Lopez-Soriano; Joost P A Kuijer; Wolter L de Graaf; Jonas A Castelijns; Chris H Polman; Peter R Luijten; Jeroen J J G Geurts; Frederik Barkhof; Mike P Wattjes Journal: J Neurol Date: 2014-04-29 Impact factor: 4.849
Authors: J Hagemeier; M Heininen-Brown; T Gabelic; T Guttuso; N Silvestri; D Lichter; L E Fugoso; N Bergsland; E Carl; J J G Geurts; B Weinstock-Guttman; R Zivadinov Journal: AJNR Am J Neuroradiol Date: 2014-05-29 Impact factor: 3.825