Synchronization device for electrocardiography-gated echo-planar imaging.
نویسندگان
چکیده
منابع مشابه
Echo-planar imaging.
Echo-planar imaging is a fast magnetic resonance (MR) imaging technique that allows acquisition of single images in as little as 20 msec and performance of multiple-image studies in as little as 20 seconds. Echo-planar imaging achieves its speed by obtaining all spatial-encoding information after a single radio-frequency (RF) excitation. Conventional imaging requires multiple-RF excitations, se...
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Interleaved echo-planar imaging (EPI) is an ultrafast imaging technique important for applications that require high time resolution or short total acquisition times. Unfortunately, EPI is prone to significant ghosting artifacts, resulting primarily from system time delays that cause data matrix misregistration. In this work, it is shown mathematically and experimentally that system time delays...
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Fig. 3: Short-axis view a), image of the water resonance of the unsuppressed EPSI reference b), single average proton spectrum with the triglyceride (TG) resonance from the septal wall (marked voxel in b) c) and corresponding spectrum from 8 signal averages showing creatine (Cr) at 3.03 ppm d). Figure 2: Cardiac field map computed from an EPSI scan acquired without water suppression a). The sum...
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Y. Bito, T. Shirai, S. Hirata, Y. Taniguchi, K. Hirata, Y. Otake, Y. Soutome, H. Ochi, T. Ebisu, Y. Kawai, M. Umeda, T. Higuchi, and C. Tanaka Central Research Laboratory, Hitachi, Ltd., Kokubunji-shi, Tokyo, Japan, Neurosurgery, Nantan General Hospital, Kyoto, Japan, Medical Informatics, Meiji University of Integrative Medicine, Kyoto, Japan, Neurosurgery, Meiji University of Integrative Medic...
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ژورنال
عنوان ژورنال: Radiology
سال: 1995
ISSN: 0033-8419,1527-1315
DOI: 10.1148/radiology.197.1.7568844