Non-enhanced magnetic resonance imaging of the small bowel at 7 Tesla in comparison to 1.5 Tesla: First steps towards clinical application
| Autor: | Mark E. Ladd, M. L. Hahnemann, Stefan Maderwald, Oliver Kraff, Thomas C. Lauenstein, Stephan Orzada, Lale Umutlu, Soeren Johst, Harald H. Quick |
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| Rok vydání: | 2016 |
| Předmět: |
Adult
Male Adolescent media_common.quotation_subject Medizin Biomedical Engineering Biophysics 030218 nuclear medicine & medical imaging Young Adult 03 medical and health sciences 0302 clinical medicine Nuclear magnetic resonance Reference Values Intestine Small medicine Humans Contrast (vision) Radiology Nuclear Medicine and imaging Prospective Studies media_common medicine.diagnostic_test business.industry Healthy subjects Reproducibility of Results Magnetic resonance imaging Magnetic Resonance Imaging Reference values Coronal plane Female Artifacts business 030217 neurology & neurosurgery |
| Zdroj: | Magnetic Resonance Imaging. 34:668-673 |
| ISSN: | 0730-725X |
| Popis: | Objective To perform non-enhanced (NE) magnetic resonance imaging (MRI) of the small bowel at 7 Tesla (7 T) and to compare it with 1.5 Tesla (1.5 T). Material and methods Twelve healthy subjects were prospectively examined using a 1.5 T and 7 T MRI system. Coronal and axial true fast imaging with steady-state precession (TrueFISP) imaging and a coronal T2-weighted (T2w) half-Fourier acquisition single-shot turbo spin-echo (HASTE) sequence were acquired. Image analysis was performed by 1) visual evaluation of tissue contrast and detail detectability, 2) measurement and calculation of contrast ratios and 3) assessment of artifacts. Results NE MRI of the small bowel at 7 T was technically feasible. In the vast majority of the cases, tissue contrast and image details were equivalent at both field strengths. At 7 T, two cases revealed better detail detectability in the TrueFISP, and better contrast in the HASTE. Susceptibility artifacts and B 1 inhomogeneities were significantly increased at 7 T. Conclusion This study provides first insights into NE ultra-high field MRI of the small bowel and may be considered an important step towards high quality T2w abdominal imaging at 7 T MRI. |
| Databáze: | OpenAIRE |
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