Automatic delineation of Gd enhancements on magnetic resonance images in multiple sclerosis

2002 ◽  
Vol 29 (7) ◽  
pp. 1536-1546 ◽  
Author(s):  
Renjie He ◽  
Ponnada A. Narayana
Keyword(s):  
Multiple Sclerosis ◽  
Magnetic Resonance ◽  
Magnetic Resonance Images

scholarly journals Multiple Sclerosis Of The Spinal Cord: Is Gadolinium Irreplaceable In Assessing Lesion Activity?

2013 ◽  
Vol 59 (3) ◽  
pp. 158-161
Author(s):  
Constantina Andrada Treabă ◽  
M Buruian ◽  
Rodica Bălașa ◽  
Maria Daniela Podeanu ◽  
I P Simu ◽  
...  
Keyword(s):  
Multiple Sclerosis ◽  
Spinal Cord ◽  
Magnetic Resonance ◽  
Contrast Enhancement ◽  
Signs And Symptoms ◽  
Magnetic Resonance Images ◽  
Type I ◽  
Focal Lesions ◽  
Spinal Cord Lesions ◽  
Active Lesion

Abstract Purpose: To evaluate the relationship between the T2 patterns of spinal cord multiple sclerosis lesions and their contrast uptake. Material and method: We retrospectively reviewed the appearance of spinal cord lesions in 29 patients (with relapsing-remitting multiple sclerosis) who had signs and symptoms of myelopathy on neurologic examination and at least one active lesion visualized on magnetic resonance examinations performed between 2004 and 2011. We correlated the T2 patterns of lesions with contrast enhancement and calculated sensitivity and specificity in predicting gadolinium enhancement. Results: Only focal patterns consisting of a lesion’s center homogenously brighter than its periphery on T2-weighed images (type I) correlated significantly with the presence of contrast enhancement (p = 0.004). Sensitivity was 0.307 and specificity 0.929. In contrast, enhancement was not significantly related to uniformly hyperintense T2 focal lesions (type II) or diffuse (type III) pattern defined as poorly delineated areas of multiple small, confluent, subtle hyperintense T2 lesions (p > 0.5 for both). Conclusions: We believe that information about the activity of multiple sclerosis spinal cord lesions in patients with myelopathy may be extracted not only from contrast enhanced, but also from non-enhanced magnetic resonance images.

scholarly journals Development of Hypointense Lesions on T1-Weighted Spin-Echo Magnetic Resonance Images in Multiple Sclerosis

1999 ◽  
Vol 56 (3) ◽  
pp. 345 ◽  
Author(s):  
Marianne A. A. van Walderveen ◽  
Luc Truyen ◽  
Bob W. van Oosten ◽  
Jonas A. Castelijns ◽  
Geert J. Lycklama à Nijeholt ◽  
...  
Keyword(s):  
Multiple Sclerosis ◽  
Magnetic Resonance ◽  
Spin Echo ◽  
Magnetic Resonance Images

scholarly journals Rapid semi-automatic segmentation of the spinal cord from magnetic resonance images: Application in multiple sclerosis

NeuroImage ◽  
2010 ◽  
Vol 50 (2) ◽  
pp. 446-455 ◽  
Author(s):  
Mark A. Horsfield ◽  
Stefania Sala ◽  
Mohit Neema ◽  
Martina Absinta ◽  
Anshika Bakshi ◽  
...  
Keyword(s):  
Multiple Sclerosis ◽  
Spinal Cord ◽  
Magnetic Resonance ◽  
Automatic Segmentation ◽  
Magnetic Resonance Images
Sign in / Sign up

Export Citation Format

Share Document