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Quantitative assessment and ligament traceability of volume isotropic turbo spin echo acquisition (VISTA) ankle magnetic resonance imaging : fat suppression versus without fat suppression
DC Field | Value | Language |
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dc.contributor.author | 조경은 | - |
dc.date.accessioned | 2017-01-26T05:40:24Z | - |
dc.date.available | 2017-01-26T05:40:24Z | - |
dc.date.issued | 2015 | - |
dc.identifier.uri | https://ir.ymlib.yonsei.ac.kr/handle/22282913/145706 | - |
dc.description | Dept. of Medicine/석사 | - |
dc.description.abstract | Objective: To compare the image quality and ligament traceability in ankle images obtained using Volume Isotropic Turbo Spin Echo Acquisition (VISTA) MRI with and without fat suppression.Materials and Methods: The signal-to-noise ratios (SNRs) in images from a phantom and from the ankle of a volunteer were compared. Ten ankles from 10 non-symptomatic volunteers were imaged for comparisons of contrast ratio (CR) and ligament traceability. All examinations were performed using VISTA sequences with and without fat suppression on a 3T MRI scanner. The SNRs were obtained from images with subjects and without subjects (noise-only). Contrast ratios from images of the 10 ankles were acquired between fluid and tendon (F-T), F-cartilage (C), F-ligament (L), fat (f)-T, f-C and f-L. Two musculoskeletal radiologists independently scored the traceability of 7 ligaments, in sagittal, axial and coronal images respectively, based on a 4-point scale (1 as not traceable through 4 as clearly traceable). The Wilcoxon signed-rank test was used to compare the CR. Fisher''s exact test and Pearson''s chi-squared test were used to compare the ligament traceability.Results: The SNRs did not differ significantly between the two sequences except in bone marrow. VISTA Spectral Attenuated Inversion Recovery (SPAIR) showed the higher CR only in F-T (p=0.04), whereas VISTA showed higher CR in f-T (p=0.005), f-C (p=0.005) and f-L (p=0.005). The calcaneofibular ligament traceability with VISTA was superior to that obtained with VISTA SPAIR (p < 0.05) in all planes.Conclusions: VISTA showed significant superiority to VISTA SPAIR in tracing CFL due to the superior CR between fat and ligament | - |
dc.description.statementOfResponsibility | open | - |
dc.format | application/pdf | - |
dc.publisher | Graduate School, Yonsei University | - |
dc.rights | CC BY-NC-ND 2.0 KR | - |
dc.rights.uri | https://creativecommons.org/licenses/by-nc-nd/2.0/kr/ | - |
dc.title | Quantitative assessment and ligament traceability of volume isotropic turbo spin echo acquisition (VISTA) ankle magnetic resonance imaging : fat suppression versus without fat suppression | - |
dc.title.alternative | 발목관절 VISTA 자기공명영상에서 정량평가와 인대의 traceability : 지방억제 대 비지방억제기법 | - |
dc.type | Thesis | - |
dc.contributor.alternativeName | Cho, Kyung Eun | - |
dc.type.local | Thesis | - |
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