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Conventional and synthetic MRI in multiple sclerosis: a comparative study
Örebro University, School of Medical Sciences. Department of Radiology.
Örebro University, School of Medical Sciences. Department of Neurology and Neurophysiology.
Centre for Medical Imaging and Physiology, Skåne University Hospital, Lund, Sweden.
Örebro University, School of Medical Sciences. Department of Medical Physics.ORCID iD: 0000-0002-8351-3367
2017 (English)In: European Radiology, ISSN 0938-7994, E-ISSN 1432-1084Article in journal (Refereed) Epub ahead of print
Abstract [en]

OBJECTIVES: To compare the assessment of patients with multiple sclerosis (MS) using synthetic and conventional MRI.

MATERIALS AND METHODS: Synthetic and conventional axial images were prospectively acquired for 52 patients with diagnosed MS. Quantitative MRI (qMRI) was used for measuring proton density and relaxation times (T1, T2) and then, based on these parameters, synthetic T1W, T2W and FLAIR images were calculated. Image stacks were reviewed blindly, independently and in random order by two radiologists. The number and location for all lesions were documented and categorised. A combined report of lesion load and presence of contrast-enhancing lesions was compiled for each patient. Agreement was evaluated using kappa statistic.

RESULTS: There was no significant difference in lesion detection using synthetic and conventional MRI in any anatomical region or for any of the three image types. Inter- and intra-observer agreements were mainly higher (p < 0.05) using conventional images but there was no significant difference in any specific region or for any image type. There was no significant difference in the outcome of the combined reports.

CONCLUSION: Synthetic MR images show potential to be used in the assessment of MS dissemination in space (DIS) despite a slightly lower inter- and intra-observer agreement compared to conventional MRI.

KEY POINTS: • Synthetic MR images may potentially be useful in the assessment of MS. • Examination times may be shortened. • Inter- and intra-observer agreement is generally higher using conventional MRI.

Place, publisher, year, edition, pages
Heidelberg, Germany: Springer, 2017.
Keyword [en]
Inter- and intra-observer agreement, Magnetic resonance imaging, Multiple sclerosis, Quantitative MRI, Synthetic MRI
National Category
Radiology, Nuclear Medicine and Medical Imaging
Identifiers
URN: urn:nbn:se:oru:diva-63025DOI: 10.1007/s00330-017-5100-9PubMedID: 29134354OAI: oai:DiVA.org:oru-63025DiVA: diva2:1163569
Available from: 2017-12-07 Created: 2017-12-07 Last updated: 2017-12-07Bibliographically approved

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Krauss, WolfgangGunnarsson, MartinThunberg, Per

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