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
in En
| WPRIM
| ID: wpr-109973
Responsible library:
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.
Key words
Full text:
1
Database:
WPRIM
Main subject:
Breast
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Breast Neoplasms
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Image Enhancement
/
Observer Variation
/
Retrospective Studies
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Sensitivity and Specificity
/
Artifacts
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Echo-Planar Imaging
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Contrast Media
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Diffusion Magnetic Resonance Imaging
Type of study:
Diagnostic_studies
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Observational_studies
/
Qualitative_research
Limits:
Adult
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Aged
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Aged80
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Female
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Humans
Language:
En
Journal:
Korean Journal of Radiology
Year:
2014
Document type:
Article