Optimization of High Flip Angle for Late Gadolinium Enhancement Magnetic Resonance Imaging by Phase-Sensitive Inversion Recovery Sequence
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- Yoshizawa Satoshi
- Department of Radiology, Nippon Medical Main Hospital
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- Tsuchihashi Toshio
- Department of Radiology, Nippon Medical Main Hospital
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- Harashina Satoshi
- Department of Radiology, Nippon Medical Main Hospital
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- Yoshimi Akira
- Department of Radiology, Nippon Medical Main Hospital
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- Shimokawa Kenichi
- Department of Radiology, Nippon Medical Main Hospital
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- Matsumura Yoshio
- Department of Radiology, Nippon Medical Main Hospital
Bibliographic Information
- Other Title
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- Phase-Sensitive Inversion Recovery心臓遅延造影MRI における高Flip Angleの有用性に関する検討
- Phase-Sensitive Inversion Recovery シンゾウ チエンゾウエイ MRI ニ オケル コウFlip Angle ノ ユウヨウセイ ニ カンスル ケントウ
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Abstract
This study focuses on optimization of the flip angle (FA) of phase-sensitive inversion recovery (PSIR) reconstruction (PSIR-FA) to achieve improved tissue contrast. Intensity normalization removes the larger variations in image intensity caused by falloff, thus improving the visualization of tissue contrast. We evaluated tissue contrast for images in healthy volunteers using the phantom influence of T1 relaxation and FA. T1 relaxation is improved due to the T1* effect and enables a high PSIR-FA to be set. The contrast-to-noise ratio (CNR) of the PSIR-FA 20° image is good, since magnetization is almost fully restored to normal. The usefulness of PSIR-FA 20 images was proved statistically. PSIR-FA 20° shows improved tissue contrast as a result of the high accuracy of intensity normalization.
Journal
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- Japanese Journal of Radiological Technology
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Japanese Journal of Radiological Technology 69 (4), 380-385, 2013
Japanese Society of Radiological Technology
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Keywords
Details 詳細情報について
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- CRID
- 1390001206361030272
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- NII Article ID
- 10031159459
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- NII Book ID
- AN00197784
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- COI
- 1:STN:280:DC%2BC3srns1ajsQ%3D%3D
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- ISSN
- 18814883
- 03694305
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- NDL BIB ID
- 024691273
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- PubMed
- 23609859
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- Crossref
- PubMed
- CiNii Articles
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- Abstract License Flag
- Disallowed