Readout-Segmented Echo-Planar Imaging in Diffusion-Weighted MR Imaging in Breast Cancer: Comparison with Single-Shot Echo-Planar Imaging in Image Quality
Korean Journal of Radiology
; : 403-410, 2014.
Article
em En
| WPRIM
| ID: wpr-109973
Biblioteca responsável:
WPRO
ABSTRACT
OBJECTIVE: The purpose of this study was to compare the image quality of standard single-shot echo-planar imaging (ss-EPI) and that of readout-segmented EPI (rs-EPI) in patients with breast cancer. MATERIALS AND METHODS: Seventy-one patients with 74 breast cancers underwent both ss-EPI and rs-EPI. For qualitative comparison of image quality, three readers independently assessed the two sets of diffusion-weighted (DW) images. To evaluate geometric distortion, a comparison was made between lesion lengths derived from contrast enhanced MR (CE-MR) images and those obtained from the corresponding DW images. For assessment of image parameters, signal-to-noise ratio (SNR), lesion contrast, and contrast-to-noise ratio (CNR) were calculated. RESULTS: The rs-EPI was superior to ss-EPI in most criteria regarding the qualitative image quality. Anatomical structure distinction, delineation of the lesion, ghosting artifact, and overall image quality were significantly better in rs-EPI. Regarding the geometric distortion, lesion length on ss-EPI was significantly different from that of CE-MR, whereas there were no significant differences between CE-MR and rs-EPI. The rs-EPI was superior to ss-EPI in SNR and CNR. CONCLUSION: Readout-segmented EPI is superior to ss-EPI in the aspect of image quality in DW MR imaging of the breast.
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WPRIM
Assunto principal:
Mama
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Neoplasias da Mama
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Aumento da Imagem
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Variações Dependentes do Observador
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Estudos Retrospectivos
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Sensibilidade e Especificidade
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Artefatos
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Imagem Ecoplanar
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Meios de Contraste
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Imagem de Difusão por Ressonância Magnética
Tipo de estudo:
Diagnostic_studies
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Observational_studies
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Qualitative_research
Limite:
Adult
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Aged
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Aged80
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Female
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Humans
Idioma:
En
Revista:
Korean Journal of Radiology
Ano de publicação:
2014
Tipo de documento:
Article