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MR imaging of brain...
MR imaging of brain volumes : evaluation of a fully automatic software
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- Ambarki, Khalid (författare)
- Umeå universitet,Radiofysik
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- Wåhlin, Anders (författare)
- Umeå universitet,Radiofysik
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- Birgander, Richard (författare)
- Umeå universitet,Diagnostisk radiologi
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- Eklund, Anders (författare)
- Umeå universitet,Radiofysik
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- Malm, Jan (författare)
- Umeå universitet,Klinisk neurovetenskap
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(creator_code:org_t)
- 2011
- 2011
- Engelska.
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Ingår i: American Journal of Neuroradiology. - 0195-6108 .- 1936-959X. ; 32:2, s. 408-412
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.3...
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Abstract
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- BACKGROUND AND PURPOSE: Automatic assessment of brain volumes is needed in researchand clinical practice. Manual tracing is still the criterionstandard but is time-consuming. It is important to validatethe automatic tools to avoid the problems of clinical studiesdrawing conclusions on the basis of brain volumes estimatedwith methodologic errors. The objective of this study was toevaluate a new commercially available fully automatic softwarefor MR imaging of brain volume assessment. Automatic and expertmanual brain volumes were compared. MATERIALS AND METHODS: MR imaging (3T, axial T2 and FLAIR) was performed in 41 healthyelderly volunteers (mean age, 70 ± 6 years) and 20 patientswith hydrocephalus (mean age, 73 ± 7 years). The softwareQBrain was used to manually and automatically measure the followingbrain volumes: ICV, BTV, VV, and WMHV. The manual method hasbeen previously validated and was used as the reference. Agreementbetween the manual and automatic methods was evaluated by usinglinear regression and Bland-Altman plots. RESULTS: There were significant differences between the automatic andmanual methods regarding all volumes. The mean differences wereICV = 49 ± 93 mL (mean ± 2SD, n = 61), BTV = 11± 70 mL, VV = –6 ± 10 mL, and WMHV = 2.4± 9 mL. The automatic calculations of brain volumes tookapproximately 2 minutes per investigation. CONCLUSIONS: The automatic tool is promising and provides rapid assessmentof brain volumes. However, the software needs improvement beforeit is incorporated into research or daily use. Manual segmentationremains the reference method.
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