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EVALUATION OF MRIS OF THE BRAIN WITH RESPECT TO SNR, CNR AND GWR IN YOUNG VERSUS OLD SUBJECTS
Date
2014-04-25
Author
Aktaş Dinçer, Hayriye
Gökçay, Didem
Metadata
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During healthy aging, the brain undergoes several structural changes which introduce prominent low contrast on the MR images. In this study, the low contrast effects causing segmentation problems were analyzed in the context of image quality ratios such as signal to noise, contrast to noise and gray white intensity: SNR, CNR, GWR. The evaluation of the T-1-weighted MPRAGE and SE scans was conducted across ages. Also by collecting multiple FLASH images with varying flip angles for estimation of T-1, the differences in T-1 value between young and old population are determined. As a result, it's observed that SE images have the best values in SNR metrics. However, it's found that T-1 estimated images are superior in CNR and GWR metrics.
Subject Keywords
Brain Aging
,
Contrast
,
MRI Parameters Adjustment
URI
https://hdl.handle.net/11511/55679
Conference Name
22nd IEEE Signal Processing and Communications Applications Conference (SIU)
Collections
Graduate School of Natural and Applied Sciences, Conference / Seminar
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H. Aktaş Dinçer and D. Gökçay, “EVALUATION OF MRIS OF THE BRAIN WITH RESPECT TO SNR, CNR AND GWR IN YOUNG VERSUS OLD SUBJECTS,” presented at the 22nd IEEE Signal Processing and Communications Applications Conference (SIU), Karadeniz Teknik Univ, Trabzon, TURKEY, 2014, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/55679.
