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Abstract #2418

Optimization of increasing signal-to-noise ratio (SNR) and contrast of black-blood T1-weighted images in carotid artery

Yuhki Hamada1, Daisuke Yoshimaru1, Ayumi Ueno1, Ayumu Funaki1, Chifumi Maruyama1, Tatsunori Sone1, and Masataka Sato1

1Department of Radiological Service, Tokyo Women’s Medical University Yachiyo Medical Center, YACHIYO, Japan

We have developed a new black-blood imaging with radial scan (multi vane) method and improved motion sensitized driven equilibrium (iMSDE). In this study, we changed the following parameters [refocusing flip angle (RFA), TE prep, flow velocity encoding (VENC)]. In addition, we measured SNR and Contrast ratio (CR) to optimize image quality. As RFA increased in radial scan with iMSDE, SNR of muscle rose gently and CR increased. With the extension of TE prep, SNR of muscle declined and CR also declined. As VENC decreased, CR rose gently. There was a significant difference compared with the conventional method.

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