T2-weighted IDEAL fast spin echo imaging of the brachial plexus: comparison with STIR
| Autor: | Teiji Yamamoto, Mika Kokubun, Mario Tsuchiya, Toshiyuki Saginoya, Noriaki Tomura |
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| Rok vydání: | 2015 |
| Předmět: |
Adult
Male medicine.medical_specialty Ideal (set theory) Radiological and Ultrasound Technology business.industry Echo (computing) General Medicine Middle Aged Signal-To-Noise Ratio Fast spin echo Image Enhancement Magnetic Resonance Imaging Nuclear magnetic resonance Image Interpretation Computer-Assisted medicine Humans Female Radiology Nuclear Medicine and imaging Radiology Artifacts Brachial Plexus Neuropathies T2 weighted business Brachial plexus |
| Zdroj: | Acta Radiologica. 56:1242-1247 |
| ISSN: | 1600-0455 0284-1851 |
| Popis: | Background Short TI inversion-recovery (STIR) imaging is widely used, but its signal-to-noise-ratio (SNR) is relatively low. Iterative decomposition of water and fat with echo asymmetric and least-squares estimation (IDEAL) imaging has demonstrated promising results in several areas. Purpose To compare T2-weighted fast spin-echo IDEAL (T2W IDEAL-FSE) with STIR to determine which sequence is superior to image the brachial plexus. Material and Methods The brachial plexus was imaged in 18 patients and six volunteers. The patients’ diseases comprised of: suspected chronic inflammatory demyelinating polyneuropathy (CIDP), brachial plexus palsy of unknown origin, and suspected amyotrophic lateral sclerosis. Frontal partial MIP images were acquired. Image quality was qualitatively and independently scored by two radiologists on a three-point grading scale for noise, visibility of the nerve roots, and overall image quality. Inter-observer agreement of the rating by two readers was assessed. The SNR and contrast-to-noise-ratio (CNR) were quantitatively calculated, and differences between T2W IDEAL-FSE and STIR were compared. Results Qualitatively, each score for T2W IDEAL-FSE was significantly higher ( P Conclusion T2W IDEAL-FSE could be used to replace STIR for visualization of the brachial plexus. |
| Databáze: | OpenAIRE |
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