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Click 55 year-old male with Baló`s concentric sclerosis. Axial, pre-contrast, T1-weighted MR images show a non-uniform, round lesion with irregular alternating bands of hypointense and isointense signal, representing demyelinated and myelinated areas, respectively. There is surrounding edema without mass effect. The lesion is located in the right precentral gyrus and measures 1.9 cm x 1.6 cm x 1.1 cm.
(Protocol: 1.5 tesla magnet strength, 5 mm slice thickness, TR: 468, TE: 12)


Click 55 year-old male with Baló`s concentric sclerosis. These axial, contrast-enhanced T1-weighted MR images show that the areas of demyelination enhance after contrast administration. Areas of myelination remain isointense as they were in the non-contrast T1-weighted images. The lesion has surrounding edema but no mass effect.
(Protocol: 1.5 tesla magnet strength, 5 mm slice thickness, TR: 657, TE: 12, 18.5 mL of gadolinium contrast given)


Click 55 year-old male with Baló`s concentric sclerosis. These contrast-enhanced T1-weighted MR images in the coronal plane also demonstrate the areas of demyelination as hyperintense while areas of myelination are isointense. The coronal plane helps to show the location of the lesion.
(Protocol: 1.5 tesla magnet strength, 5 mm slice thickness, TR: 657, TE: 12, 18.5 mL of gadolinium contrast given)


Click 55 year-old male with Baló`s concentric sclerosis. These contrast-enhanced T1-weighted MR images in the sagittal plane also demonstrate the areas of demyelination as hyperintense while areas of myelination are isointense. The sagittal plane helps to show the location of the lesion.
(Protocol: 1.5 tesla magnet strength, 5 mm slice thickness, TR: 657, TE: 12, 18.5 mL of gadolinium contrast given)


Click 55 year-old male with Baló`s concentric sclerosis. These axial T2-weighted MR images show the non-uniform, round lesion with alternating areas of isointense and hyperintense signals, corresponding to myelinated and demyelinated tissue, respectively. These images also demonstrate tiny, nonsymmetrical hyperintense foci that are seen in the periventricular and subcortical white matter and the septocallosal interface. These foci represent areas of demyelination and support the diagnosis of multiple sclerosis.
(Protocol: 1.5 tesla magnet strength, 5 mm slice thickness, TR: 3300, TE: 97)


Click 55 year-old male with Baló`s concentric sclerosis. These diffusion-weighted MR images in the axial plane show the lesion as a central core of low signal with high signal intensity in intermediate and outer rings. Restricted diffusion, which is shown as high signal intensity, is in areas of active demyelination while areas of facilitated diffusion are represented by low signal intensity.
(Protocol: 1.5 tesla magnet strength, 5 mm slice thickness, TR: 3600, TE: 89)


Click 55 year-old male with Baló`s concentric sclerosis. The diffusion coefficient map in the axial plane confirms the presence of restricted diffusion, which is shown by low signal intensity, in the intermediate ring of the mass. Relatively unrestricted diffusion is shown as high signal intensity.
(Protocol: 1.5 tesla magnet strength, 5 mm slice thickness, TR: 3600, TE: 89)


Click 55 year-old male with Baló`s concentric sclerosis. These sagittal STIR MR images of the cervical spine show two hyperintense foci at the level of C2 and C5. These lesions also represent areas of demyelination and further support the diagnosis of multiple sclerosis.
(Protocol: 1.5 tesla magnet strength, 3 mm slice thickness, TR: 4230, TE: 42)