Study on the primary visual cortex of visually impaired subjects by means of 123I-IMP SPECT and MRI.
Ann Nucl Med
; 9(2): 105-8, 1995 May.
Article
in En
| MEDLINE
| ID: mdl-7662490
ABSTRACT
We conducted a study of rCBF in the primary visual cortex of visually impaired subjects who have not been subjected to external stimulation for a long period, by means of 123I-IMP SPECT and MRI. The four subjects had lost their sight due to brain tumors (n = 2), glaucoma (n = 1) and trauma (n = 1). 123I-IMP SPECT showed no differences between the visually impaired group and a visually sound control group on visual analysis as well as semiquantitative analysis. MRI of the visually impaired subjects showed no organic changes, such as atrophy, in the occipital cortex. In conclusion, visually impaired subjects have no decrease in rCBF and no anatomical changes in the primary visual cortex.
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Collection:
01-internacional
Database:
MEDLINE
Main subject:
Visual Cortex
/
Blindness
Type of study:
Diagnostic_studies
Limits:
Adult
/
Humans
/
Male
Language:
En
Journal:
Ann Nucl Med
Journal subject:
MEDICINA NUCLEAR
Year:
1995
Document type:
Article
Affiliation country:
Japan