Hisamoto Moriguchi1,2, Shin-Ichi Urayama3,
Yutaka Imai1, Manabu Honda4, Takashi Hanakawa4,5
1Radiology, Tokai
University, Isehara, Kanagawa, Japan; 2Radiology, Hiratsuka Municipal
Hospital, Hiratsuka, Kanagawa, Japan; 3Human Brain Research
Center, Kyoto University, Kyoto, Japan; 4Functional Brain
Research, National Center of Neurology & Psychiatry, Kodaira, Tokyo,
Japan; 5Precursory Research for Embryonic Science & Technology,
Japan Science & Technology Agency, Japan
Partial Fourier (PF) imaging is one of the most widely used fast data acquisition methods in MRI. In existing PF reconstruction algorithms, image quality depends on estimated phase information. However, it is often difficult to estimate accurate phase. In this study, a novel PF reconstruction technique that does not require phase estimation has been demonstrated. Since the recently proposed focal underdetermined system solver (FOCUSS) has been taken advantage of, the new method is referred to as ePF-FOCUSSf. With PF-FOCUSS, over 50% reduction in scan time can be achieved. Furthermore, images reconstructed using PF-FOCUSS are generally of quite high quality.
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