Friedreich's ataxia CT: Difference between revisions
| Line 6: | Line 6: | ||
==CT scan== | ==CT scan== | ||
A. Two-thirds of the patients with showed moderate cerebellar atrophy and an increase in the surface area of the fourth ventricle. Severe cerebellar atrophy and enlargement of the cerebellopontine angle cistern was seen in patients with olivopontocerebellar (OPC) atrophy and idiopathic cortical cerebellar atrophy. In the OPC atrophy group there was also prominent atrophy of the brainstem and an increase in the fourth ventricle parameters. Alcoholic cerebellar degeneration showed a specific pattern of cerebellar atrophy most prominent in the superior vermis, together with a slight increase in the fourth ventricle surface, a reduction in the size of the brainstem, and an enlargement of the cerebellopontine angle cistern. Supratentorial atrophy was present only in the OPC and alcoholic atrophy groups. In one patient with spastic ataxia, CT was normal but MR imaging revealed prominent atrophy of the spinal cord. These CT patterns appear to be distinctive enough to permit the diagnosis and classification of the various forms of spinocerebellar degeneration. | |||
There are no CT scan findings associated with [disease name]. | There are no CT scan findings associated with [disease name]. | ||
| Line 12: | Line 12: | ||
OR | OR | ||
Brain CT scan may be helpful in the diagnosis of Friedreich's ataxia. Findings on CT scan suggestive of Friedreich's ataxia include: | |||
*Moderate cerebellar atrophy and an increase in the surface area of the [[fourth ventricle]] in two-thirds of the patients | *Moderate cerebellar atrophy and an increase in the surface area of the [[fourth ventricle]] in two-thirds of the patients | ||
*Atrophy of the number and width of cerebellar sulci | |||
*Atrophy of transverse diameter and surface area of the: | |||
**[[Fourth ventricle]] | |||
**[[Brainstem]] ratio | |||
**[[Cerebellopontine angle|Cerebellopontine angle cistern]] | |||
**Evans' index | |||
* | * | ||
==References== | ==References== | ||
Revision as of 14:49, 3 May 2019
|
Friedreich's ataxia Microchapters |
|
Diagnosis |
|---|
|
Treatment |
|
Case Studies |
|
Friedreich's ataxia CT On the Web |
|
American Roentgen Ray Society Images of Friedreich's ataxia CT |
|
Risk calculators and risk factors for Friedreich's ataxia CT |
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Mohamadmostafa Jahansouz M.D.[2]
Overview
CT scan
A. Two-thirds of the patients with showed moderate cerebellar atrophy and an increase in the surface area of the fourth ventricle. Severe cerebellar atrophy and enlargement of the cerebellopontine angle cistern was seen in patients with olivopontocerebellar (OPC) atrophy and idiopathic cortical cerebellar atrophy. In the OPC atrophy group there was also prominent atrophy of the brainstem and an increase in the fourth ventricle parameters. Alcoholic cerebellar degeneration showed a specific pattern of cerebellar atrophy most prominent in the superior vermis, together with a slight increase in the fourth ventricle surface, a reduction in the size of the brainstem, and an enlargement of the cerebellopontine angle cistern. Supratentorial atrophy was present only in the OPC and alcoholic atrophy groups. In one patient with spastic ataxia, CT was normal but MR imaging revealed prominent atrophy of the spinal cord. These CT patterns appear to be distinctive enough to permit the diagnosis and classification of the various forms of spinocerebellar degeneration.
There are no CT scan findings associated with [disease name].
OR
Brain CT scan may be helpful in the diagnosis of Friedreich's ataxia. Findings on CT scan suggestive of Friedreich's ataxia include:
- Moderate cerebellar atrophy and an increase in the surface area of the fourth ventricle in two-thirds of the patients
- Atrophy of the number and width of cerebellar sulci
- Atrophy of transverse diameter and surface area of the:
- Fourth ventricle
- Brainstem ratio
- Cerebellopontine angle cistern
- Evans' index