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Abstract #2766

Sexual dimorphism in the young adult brain using magnetic resonance imaging: The effect of the field strengths

Jyun-Ru Chen1, Hui-Chieh Yang1, Yen-Chih Huang2, Chun-Ming Chen2, Chih-Feng Chen3, and Shin-Lei Peng1

1Department of Biomedical Imaging and Radiological Science, China Medical University, Taichung, Taiwan, 2Department of Radiology, China Medical University Hospital, Taichung, Taiwan, 3Department of Radiology, Taichung Tzu Chi Hospital, Taichung, Taiwan

The existing reports regarding sexual dimorphism in brain structures are not confluent and generally heterogeneous. MRI instrument-related factor such as field strength is one of the greatest contributors to the brain quantification variability, but its effect on sexual dimorphism in brain structures remains unclear. In this study, we found that due to the image contrast differences arising from differences in field strengths, the sex dimorphism in brain morphology appears to exist dependent of field strengths. It suggests field strength should be considered as one important factor that contributes to the inconsistency in the sex dimorphism in brain across literatures.

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