Readout-segmented echo-planar imaging in diffusion-weighted mr imaging in breast cancer: comparison with single-shot echo-planar imaging in image quality.
Korean J Radiol
; 15(4): 403-10, 2014.
Article
in En
| MEDLINE
| ID: mdl-25053898
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 ANDMETHODS:
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
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Image Enhancement
/
Echo-Planar Imaging
/
Diffusion Magnetic Resonance Imaging
Type of study:
Diagnostic_studies
/
Observational_studies
/
Qualitative_research
Limits:
Adult
/
Aged
/
Aged80
/
Female
/
Humans
/
Middle aged
Language:
En
Journal:
Korean J Radiol
Journal subject:
RADIOLOGIA
Year:
2014
Document type:
Article