Meeting Banner
Abstract #2913

Comparison of 2D-EPI, 3D-EPI and ERASE in terms of physiological noise, SNR and tSNR

Jae-Kyun Ryu1,2 and Jang-Yeon Park2,3,4
1Biomedical Institute for Convergence at SKKU, Sungkyunkwan University, Suwon, Korea, Republic of, 2Center for Neuroscience Imaging Research, Institute for Basic Science, Suwon, Korea, Republic of, 3Department of Biomedical Engineering, Sungkyunkwan University, Suwon, Korea, Republic of, 4Department of Intelligent Precision Healthcare Convergence, Sungkyunkwan University, Suwon, Korea, Republic of

Recently we proposed an ultrafast 3D gradient-echo imaging sequence using spatiotemporal-encoding (SPEN), called ERASE (Equal-TE Rapid Acquisition with Sequential Excitation), which has high tolerance to B0 inhomogeneities. Here, we investigated the noise characteristics, SNR, and tSNR of ERASE with rat brain imaging at 9.4T at high spatial resolution, in comparison with 2D and 3D gradient-echo EPI. While ERASE provided better tSNR than both of them, it provided intermediate SNR between them. The ratio of physiological and thermal noise (σP0) and lambda (λ) were smaller in ERASE than 2D and 3D-EPI mainly due to its robustness against B0 inhomogeneity.

This abstract and the presentation materials are available to members only; a login is required.

Join Here