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Updated: Nov 11, 2025
Dynamic Visual Tests to Identify and Quantify Visual Damage and Repair Following Demyelination in Optic Neuritis Patients
Published on: April 14, 2014
Dedicated 3D-T2-STIR-ZOOMit Imaging Improves Demyelinating Lesion Detection in the Anterior Visual Pathways of
E Pravatà1, L Roccatagliata2,3, M P Sormani2,3
1From the Department of Neuroradiology (E.P., A.C.), Neurocenter of Southern Switzerland, Lugano, Switzerland emanuele.pravata@eoc.ch.
Background And Purpose:
Demyelinating lesions in the anterior visual pathways represent an underestimated marker of disease dissemination in patients with MS. We prospectively investigated whether a dedicated high-resolution MR imaging technique, the 3D-T2-STIR-ZOOMit, improves demyelinating lesion detection compared with the current clinical standard sequence, the 2D-T2-STIR.
Materials And Methods:
3T MR imaging of the anterior visual pathways (optic nerves, chiasm, and tracts) was performed using 3D-T2-STIR-ZOOMit and 2D-T2-STIR, in patients with MS and healthy controls. Two experienced neuroradiologists assessed, independently, demyelinating lesions using both sequences separately. 3D-T2-STIR-ZOOMit scan-rescan reproducibility was tested in 12 patients. The Cohen κ was used for interrater agreement, and the intraclass correlation coefficient for reproducibility. Between-sequence detection differences and the effects of location and previous acute optic neuritis were assessed using a binomial mixed-effects model.
Results:
Forty-eight patients with MS with (n = 19) or without (n = 29) past optic neuritis and 19 healthy controls were evaluated. Readers' agreement was strong (3D-T2-STIR-ZOOMit: 0.85; 2D-T2-STIR: 0.90). The 3D-T2-STIR-ZOOMit scan-rescan intraclass correlation coefficient was 0.97 (95% CI, 0.96-0.98; P < .001), indicating excellent reproducibility. Overall, 3D-T2-STIR-ZOOMit detected more than twice the demyelinating lesions (n = 89) than 2D-T2-STIR (n = 43) (OR = 2.7; 95% CI, 1.7-4.1; P < .001). In the intracranial anterior visual pathway segments, 33 of the 36 demyelinating lesions (91.7%) detected by 3D-T2-STIR-ZOOMit were not disclosed by 2D-T2-STIR. 3D-T2-STIR-ZOOMit increased detection of demyelinating lesion probability by 1.8-fold in patients with past optic neuritis (OR = 1.8; 95% CI, 1.2-3.1; P = .01) and 5.9-fold in patients without past optic neuritis (OR = 5.9; 95% CI, 2.5-13.8; P < .001). No false-positive demyelinating lesions were detected in healthy controls.
Conclusions:
Dedicated 3D-T2-STIR-ZOOMit images improved substantially the detection of MS disease dissemination in the anterior visual pathways, particularly in the intracranial segments and in patients without past optic neuritis.
Insights
A new MRI technique, 3D-T2-STIR-ZOOMit, significantly enhances the detection of demyelinating lesions in the anterior visual pathways for multiple sclerosis (MS) patients. This advanced imaging method offers superior diagnostic accuracy compared to standard sequences.
Area of Science:
- Neuroimaging
- Radiology
- Neurology
Background:
- Demyelinating lesions in anterior visual pathways are key indicators of multiple sclerosis (MS) dissemination.
- Accurate detection of these lesions is crucial for disease monitoring and management.
- Current standard MRI sequences may underestimate lesion burden in these critical areas.
Purpose of the Study:
- To evaluate the efficacy of a novel high-resolution MRI technique, 3D-T2-STIR-ZOOMit, for detecting demyelinating lesions.
- To compare the diagnostic performance of 3D-T2-STIR-ZOOMit against the standard 2D-T2-STIR sequence.
- To assess the impact of this new technique on identifying disease dissemination in MS patients.
Main Methods:
- Prospective study involving 3T MRI of anterior visual pathways in MS patients and healthy controls.
- Utilized both 3D-T2-STIR-ZOOMit and 2D-T2-STIR sequences for lesion assessment by experienced neuroradiologists.
- Analyzed interrater agreement, scan-rescan reproducibility, and between-sequence detection differences using statistical models.
Main Results:
- 3D-T2-STIR-ZOOMit detected more than double the number of demyelinating lesions compared to 2D-T2-STIR (89 vs. 43 lesions).
- A significant proportion (91.7%) of lesions detected in intracranial anterior visual pathway segments by 3D-T2-STIR-ZOOMit were missed by 2D-T2-STIR.
- The new technique showed excellent reproducibility (ICC = 0.97) and increased lesion detection probability, especially in patients without prior optic neuritis.
Conclusions:
- The dedicated 3D-T2-STIR-ZOOMit MRI sequence substantially improves the detection of MS disease dissemination in the anterior visual pathways.
- This enhanced detection is particularly notable in the intracranial segments and in MS patients with no history of optic neuritis.
- 3D-T2-STIR-ZOOMit represents a valuable advancement for more accurate assessment of MS progression and disease burden.
