Abstract #3310

Improvements of Suppression of In-Plane Flow Signal of Carotid Arteries using Phase Sensitive Inversion Recovery -3D T1 Turbo Field Echo

Nao Kajihara¹, Tomohiko Horie¹, Masatoshi Honda¹, Isao Muro¹, Taro Takahara², Hisamoto Moriguchi¹, Yutaka Imai¹

¹Radiology, Tokai University School of Medicine, Isehara, Kanagawa, Japan; ²Tokai University School of Engineering, Hiratsuka, Kanagawa, Japan

3D inversion recovery -T1 turbo field echo (3D IR-T1TFE) has been widely used to suppress signals from flowing blood. However, it usually does not achieve complete elimination of the signals from blood due to T1 relaxation occurred during long acquisition time. Phase sensitive IR (PSIR) has been proposed to improve detection of myocardial infarction using Gadolinium-delayed hyperenhancement. It maintains polarity of magnetization inverted by an IR RF pulse and corrects for phase error in the images. In this study, we show that improved suppression of in-plane flow signal of carotid arteries is achieved using 3D IR-T1TFE combined with PSIR.