Related Experiment Videos
Brain lesions in patients with multiple sclerosis: detection with echo-planar imaging
B Siewert1, M R Patel, M F Mueller
1Department of Radiology, Beth Israel Hospital, Harvard Medical School, Boston, MA 02215, USA.
Radiology
|September 1, 1995
Summary
Multishot echo-planar imaging significantly improves brain lesion detection in multiple sclerosis compared to single-shot techniques. This advanced method offers comparable lesion detectability to conventional spin-echo imaging with reduced artifact.
Area of Science:
- Radiology
- Neuroimaging
- Magnetic Resonance Imaging
Background:
- Multiple sclerosis (MS) diagnosis relies on detecting brain lesions.
- Conventional spin-echo (SE) imaging is a standard for lesion detection.
- Echo-planar imaging (EPI) offers faster acquisition but has artifact challenges.
Purpose of the Study:
- To compare the efficacy of different echo-planar imaging (EPI) sequences against conventional spin-echo (SE) for detecting brain lesions in MS patients.
- To evaluate lesion detectability and image quality using quantitative and qualitative criteria.
Main Methods:
- A study involving 17 multiple sclerosis patients (3 men, 14 women; mean age 31).
- Comparison of single-shot EPI, multishot EPI (proton-density and T2-weighted), and conventional SE sequences.
- Proton-density-weighted SE sequence served as the reference standard for evaluation.
Main Results:
- Multishot EPI sequences demonstrated superior image quality and lesion detection compared to single-shot EPI.
- The multishot proton-density-weighted EPI detected 53/54 large and 23/30 small lesions.
- The single-shot proton-density-weighted EPI detected 38/54 large and 5/30 small lesions.
Conclusions:
- Multishot EPI sequences achieve lesion detectability for large lesions comparable to conventional SE imaging.
- Multishot EPI significantly reduces susceptibility artifacts compared to single-shot EPI, enhancing diagnostic reliability.