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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