High-field MRI of the Central Nervous System: Current Approaches to Clinical and Microscopic Imaging
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- SASAKI Makoto
- Department of Radiology, Iwate Medical University
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- INOUE Takashi
- Department of Neurosurgery, Iwate Medical University
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- TOHYAMA Koujiro
- Department of Neuroanatomy, Iwate Medical University
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- OIKAWA Hirobumi
- Department of Radiology, Iwate Medical University
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- EHARA Shigeru
- Department of Radiology, Iwate Medical University
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- OGAWA Akira
- Department of Neurosurgery, Iwate Medical University
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Abstract
Introduction of clinical high-field MRI has raised interest in the use of clinical imaging—the efficacy of which has not yet been fully established—in daily practice. A high signal-to-noise ratio and profound susceptibility effects can improve the spatial resolution and image contrast of clinical imaging, whereas the heating effects of the radio frequency tend to prolong acquisition time. As well, inhomogeneities in the static or local magnetic fields can have a negative effect on image quality. The T1 prolongation may affect T1 contrast yet improve the enhancement effect of gadolinium chelate and the inflow effect of MR angiography. High-contrast imaging, such as the short inversion-time inversion recovery technique, can provide excellent intra- and extracerebral contrast comparable to microscopic or macroscopic specimens. High-field systems can also be applied to microscopic imaging. High-field MRI is expected to have an increased clinical impact in the near future. Technological advances tailored to high-field systems, as well as the accumulation of scientific evidence, will be necessary to establish its predominance over conventional MRI.<br>
Journal
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- Magnetic Resonance in Medical Sciences
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Magnetic Resonance in Medical Sciences 2 (3), 133-139, 2003
Japanese Society for Magnetic Resonance in Medicine
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Keywords
Details 詳細情報について
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- CRID
- 1390001205196112640
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- NII Article ID
- 10012558151
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- NII Book ID
- AA11648770
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- ISSN
- 18802206
- 13473182
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- Text Lang
- en
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- Data Source
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- JaLC
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed