N/2 ghosting artifacts: elimination at 3.0-T MR cholangiography with SPACE pulse sequence.
This HIPAA-compliant study had institutional review board approval, with waiver of informed consent. The purpose was to test the hypothesis that, compared with a standard magnetic resonance (MR) cholangiography sequence, MR cholangiography with a sampling perfection with application optimized contrasts using different flip angle evolutions (SPACE) sequence reduces ghosting artifacts while maintaining image quality and sufficient contrast-to-noise ratio (CNR) at 3.0 T. The study population consisted of 15 women and 14 men (mean age, 47.2 years +/- 18.1 [standard deviation]) who were consecutively referred for MR cholangiography between November 2004 and November 2005. Acquisition times were lower and N/2 ghosting artifacts were eliminated with SPACE. However, the SPACE sequence yielded images that were visually grainier and had lower CNR. Overall, the readers preferred the appearance of images obtained with the SPACE sequence, most likely because of the elimination of N/2 ghosting artifacts.
Duke Scholars
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Related Subject Headings
- Signal Processing, Computer-Assisted
- Sensitivity and Specificity
- Reproducibility of Results
- Nuclear Medicine & Medical Imaging
- Middle Aged
- Male
- Image Interpretation, Computer-Assisted
- Image Enhancement
- Humans
- Female
Citation
Published In
DOI
EISSN
Publication Date
Volume
Issue
Start / End Page
Location
Related Subject Headings
- Signal Processing, Computer-Assisted
- Sensitivity and Specificity
- Reproducibility of Results
- Nuclear Medicine & Medical Imaging
- Middle Aged
- Male
- Image Interpretation, Computer-Assisted
- Image Enhancement
- Humans
- Female