Spiral T1 Spin-Echo for Routine Postcontrast Brain MRI Exams: A Multicenter Multireader Clinical Evaluation
| العنوان: | Spiral T1 Spin-Echo for Routine Postcontrast Brain MRI Exams: A Multicenter Multireader Clinical Evaluation |
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| المؤلفون: | Osamu Togao, Hui Wang, Jean A. Tkach, Y. Wang, Ryan K. Robison, Makoto Obara, S. Nagaraj, Nicholas R. Zwart, Ivan E. Dimitrov, I. Saha, Dinghui Wang, Ashley G. Anderson, M. M. Kunst, Marco C. Pinho, Juan E. Small, N. K. Pinter, John P. Karis, A. Bakhru, H. T. Friel, Yansong Zhao, M.H. Temkit, Jalal B. Andre, Houchun H. Hu, T. Mathews, J. J. Koonen, James G. Pipe, R. K. Gupta, Melvyn B. Ooi, Zhiqiang Li, S. Hey, Jeffrey H. Miller, Usha D. Nagaraj, Q. Lu, Thomas L. Chenevert |
| المصدر: | AJNR Am J Neuroradiol |
| بيانات النشر: | American Society of Neuroradiology (ASNR), 2020. |
| سنة النشر: | 2020 |
| مصطلحات موضوعية: | Adult, Male, Wilcoxon signed-rank test, Image quality, Neuroimaging, 030218 nuclear medicine & medical imaging, Scan time, 03 medical and health sciences, 0302 clinical medicine, Brain mri, Humans, Medicine, Radiology, Nuclear Medicine and imaging, Spiral, Aged, Artifact (error), business.industry, Adult Brain, Brain, Middle Aged, Image Enhancement, Magnetic Resonance Imaging, Spin echo, Female, Neurology (clinical), Artifacts, business, Nuclear medicine, Clinical evaluation, 030217 neurology & neurosurgery |
| الوصف: | BACKGROUND AND PURPOSE: Spiral MR imaging has several advantages compared with Cartesian MR imaging that can be leveraged for added clinical value. A multicenter multireader study was designed to compare spiral with standard-of-care Cartesian postcontrast structural brain MR imaging on the basis of relative performance in 10 metrics of image quality, artifact prevalence, and diagnostic benefit. MATERIALS AND METHODS: Seven clinical sites acquired 88 total subjects. For each subject, sites acquired 2 postcontrast MR imaging scans: a spiral 2D T1 spin-echo, and 1 of 4 routine Cartesian 2D T1 spin-echo/TSE scans (fully sampled spin-echo at 3T, 1.5T, partial Fourier, TSE). The spiral acquisition matched the Cartesian scan for scan time, geometry, and contrast. Nine neuroradiologists independently reviewed each subject, with the matching pair of spiral and Cartesian scans compared side-by-side, and scored on 10 image-quality metrics (5-point Likert scale) focused on intracranial assessment. The Wilcoxon signed rank test evaluated relative performance of spiral versus Cartesian, while the Kruskal-Wallis test assessed interprotocol differences. RESULTS: Spiral was superior to Cartesian in 7 of 10 metrics (flow artifact mitigation, SNR, GM/WM contrast, image sharpness, lesion conspicuity, preference for diagnosing abnormal enhancement, and overall intracranial image quality), comparable in 1 of 10 metrics (motion artifacts), and inferior in 2 of 10 metrics (susceptibility artifacts, overall extracranial image quality) related to magnetic susceptibility (P < .05). Interprotocol comparison confirmed relatively higher SNR and GM/WM contrast for partial Fourier and TSE protocol groups, respectively (P < .05). CONCLUSIONS: Spiral 2D T1 spin-echo for routine structural brain MR imaging is feasible in the clinic with conventional scanners and was preferred by neuroradiologists for overall postcontrast intracranial evaluation. |
| تدمد: | 1936-959X 0195-6108 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3ab15d2c67542a1072ca32b0b2970f02 https://doi.org/10.3174/ajnr.a6409 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....3ab15d2c67542a1072ca32b0b2970f02 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 1936959X 01956108 |
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