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Abstract #1777

Comparison of EPI- and SSFP-PC with S-Transform for Separating Cardiac- and Respiratory-driven Intracranial CSF Motions under Free Breathing

Satoshi Yatsushiro1, Tomohiko Horie2, Mitsunori Matsumae3, and Kayagaki Kuroda1
1Department of Human and Information Science, School of Information Science and Technology, Tokai University, Hiratsuka, Kanagawa, Japan, 2Department of Radiological Technology, Tokai University Hospital, Isehara, Kanagawa, Japan, 3Department of Neurosurgery, School of Medicine, Tokai University, Isehara, Kanagawa, Japan

To compare the performance of separating cardiac- and respiratory-driven intracranial CSF motions under free breathing with Stockwell transform (ST), real time phase contrast imaging based on echo planar imaging (EPI-PC) and steady state free precession (SSFP-PC) were compared. In 3 healthy volunteers, 3 patients with idiopathic normal pressure hydrocephalus (iNPH), and 2 patients with Chiari malformation, both PC schemes yielded almost the same image quality, although EPI-PC had relatively higher frame rate than SSFP-PC. These preliminary results indicated that both techniques in conjunction with ST will be useful to seize the CSF motions under free breathing.

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