Monitoring fractional anisotropy in developing rabbit brain using MR diffusion tensor imaging at 3T

Jo-Chi Jao; Yu-Ting Yang; Chia-Chi Hsiao; Po-Chou Chen

doi:10.1117/12.2217508

29 March 2016 Monitoring fractional anisotropy in developing rabbit brain using MR diffusion tensor imaging at 3T

Jo-Chi Jao, Yu-Ting Yang, Chia-Chi Hsiao, Po-Chou Chen

Author Affiliations +

Proceedings Volume 9788, Medical Imaging 2016: Biomedical Applications in Molecular, Structural, and Functional Imaging; 97881D (2016) https://doi.org/10.1117/12.2217508
Event: SPIE Medical Imaging, 2016, San Diego, California, United States

Abstract

The aim of this study was to investigate the factional anisotropy (FA) in various regions of developing rabbit brain using magnetic resonance diffusion tensor imaging (MR DTI) at 3 T. A whole-body clinical MR imaging (MRI) scanner with a 15-channel high resolution knee coil was used. An echo-planar-imaging (EPI)-DTI pulse sequence was performed. Five 5 week-old New Zealand white (NZW) rabbits underwent MRI once per week for 24 weeks. After scanning, FA maps were obtained. ROIs (regions of interests) in the frontal lobe, parietal & temporal lobe, and occipital lobe were measured. FA changes with time were evaluated with a linear regression analysis. The results show that the FA values in all lobes of the brain increased linearly with age. The ranking of FA values was FA(frontal lobe) < FA(parietal & temporal lobe) > FA(occipital lobe). There was significant difference (p < 0.05) among these lobes. FA values are associated with the nerve development and brain functions. The FA change rate could be a biomarker to monitor the brain development. Understanding the FA values of various lobes during development could provide helpful information to diagnosis the abnormal syndrome earlier and have a better treatment and prognosis. This study established a brain MR-DTI protocol for rabbits to investigate the brain anatomy during development using clinical MRI. This technique can be further applied to the pre-clinical diagnosis, treatment, prognosis and follow-up of brain lesions.

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Jo-Chi Jao, Yu-Ting Yang, Chia-Chi Hsiao, and Po-Chou Chen "Monitoring fractional anisotropy in developing rabbit brain using MR diffusion tensor imaging at 3T", Proc. SPIE 9788, Medical Imaging 2016: Biomedical Applications in Molecular, Structural, and Functional Imaging, 97881D (29 March 2016); https://doi.org/10.1117/12.2217508

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KEYWORDS

Brain

Magnetic resonance imaging

Diffusion tensor imaging

Anisotropy

Diffusion

Neuroimaging

Brain mapping

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