Wide slab is useful for routine quality control of MRI slice thickness
| Autor: | Yoshiyuki Ishimori, Hiraku Kawamura, Masahiko Monma |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Quality Control
Radiation business.product_category Materials science medicine.diagnostic_test business.industry Coefficient of variation Slice thickness Physical Therapy Sports Therapy and Rehabilitation Magnetic resonance imaging General Medicine Signal-To-Noise Ratio Magnetic Resonance Imaging Wedge (mechanical device) 030218 nuclear medicine & medical imaging 03 medical and health sciences 0302 clinical medicine Optics 030220 oncology & carcinogenesis medicine Slab Radiology Nuclear Medicine and imaging Wafer business |
| Zdroj: | Radiological physics and technology. 11(3) |
| ISSN: | 1865-0341 |
| Popis: | Although slice thickness accuracy is important for the performance of magnetic resonance imaging systems, long scan times are required to perform reliable measurements. Inclined slabs and wedges are conventionally used as test devices to obtain slice profiles. In this study, a novel dedicated device with a widened slab was created, and its efficacy was compared with that of a conventional wedge. The signal-to-noise ratio (SNR) of the profile and the coefficient of variation (CV) of the measured slice thickness were measured. Wide slab usage showed sufficient SNR by averaging multiple profile lines, even with single acquisition. Therefore, it is possible to substantially shorten the measurement time. When ≥ 20 lines were averaged, CV was |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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