[14p-C42-1~21] 3.4 Biomedical optics

[14p-C42-5] Development of rotary magnet Field cycle MRI for T1 waited imaging

〇(PC)Ryoma Kobayashi¹, Atsushi Iikura², Yuji Ohkubo³, Hidenori Kajiwara², Hideo Utsumi⁴ (1.Redox, Kyushu Univ., 2.Fuji electrics, 3.Meiko, 4.ReMI)

Keywords:MRI, magnetic resonance

MRI based on nuclear magnetic resonance spectroscopy is critically useful in medical application. MRI make a picture of H1 density. We can get more information from T1 weighted imaging(T1WI). T1WI use a parameter TR for MRI pulse sequence. However, TR is limited because of SNR of image. Therefore the field cycle method is suggested for T1WI. This is a process of changing the main magnetic field during MRI imaging. However previous method weren’t conclusive, because of several problems. We develop new field cycling MRI with Rotary magnet.