Role of MRI scanning in the diagnosis of cerebral visual disturbance

Nieuwenhuizen, Onno van; Abbing, Pieter Roscam; Plantes, B. G. Ziedses des; Ramos, Lino; Veiga-Pires, J. A.; Willemse, J.

doi:10.1016/0887-8994(86)90080-9

Cited by 12 publications

(2 citation statements)

References 3 publications

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“…Van Nieuwenhuizen et al (16,17) described eharaeteristie lesions in the visual pathways in CP patients with CVI: dilatation of the posterior horns of the lateral ventrieles ("ex vaeuo") due to PVL (predominantly found in prematures) and isehemie lesions in the oeeipital lobe and striatal area.…”

Section: Ctscansmentioning

confidence: 99%

Cerebral Visual Impairment in Cerebral Palsy: Relation to Structural Abnormalities of the Cerebrum

et al. 1994

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In patients with cerebral palsy (CP), cerebral visual impairment (CVI) is frequently found in addition to ophthalmological disorders. Lesions in the visual areas are found in CT scans of CP patients with CVI. The aim of the present study was to determine the prevalence of these specific findings in CP patients with CVI. CT scans of 49 cerebral palsy patients were studied; CVI was diagnosed in 36 patients; in 13 patients, visual acuity was normal. In 8 patients, comparison with an MRI scan was possible (6 with CVI, 2 with normal acuity). The CT scans were scored according to the criteria used by Van Nieuwenhuizen (1987): normal, abnormalities of the white matter adjacent to the posterior horns of the lateral ventricles, abnormalities of the white matter located under the visual cortex, abnormalities of the visual cortex and abnormalities elsewhere. Abnormalities in the visual areas were found in 15% of the normal acuity group and in 53% of the CVI group. In 17 of the 19 CVI patients with abnormalities in the visual areas, the lesions were located in the white matter surrounding the posterior horns (89%). MRI imaging revealed the same abnormalities as the CT scans in 6 patients, but in one patient the abnormality was seen in more detail and in one patient the lesion in the occipital area was seen only on MRI. MRI examination seems to detect at least as many, but in some cases even more specific lesions in CVI patients compared to CT scanning, but the numbers were too small to allow any definitive conclusions to be drawn.

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Section: Ctscansmentioning

confidence: 99%

Cerebral Visual Impairment in Cerebral Palsy: Relation to Structural Abnormalities of the Cerebrum

et al. 1994

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“…Cerebral visual impairment (CVI) in chlldren is a condition of reduced visual capacity resulting h m damage to the visual pathways and projection areas posterior to the optic chiasm (11,29,30,35). The causes of CVI in chrldren are varied.…”

Section: Introduction Levelmentioning

confidence: 99%

Impaired Visual Perceptual Performance on an Object Recognition Task in Children with Cerebral Visual Impairment

Stiers¹,

Cock²,

Vandenbussche³

1998

Neuropediatrics

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Visual perceptual ability and grating acuity were studied in 22 children with cerebral visual impairment (CVI). In most studies indicating visual perceptual impairments in CVI children, the evidence is weakened by the co-presence of reduced nonverbal, relative to verbal, intelligence, which in itself might account for the impaired performance on visual perceptual tasks. Our aim was to show that CVI children's performance on a visual perceptual task is weaker than can be expected from their nonverbal intelligence scores, thus demonstrating an impairment that is specific to visual perception. To this end, we used an object recognition task consisting of 60 line drawings depicting common objects in various aberrant ways. For each drawing, the age was established at which 9 out of 10 normal children could recognise the object depicted. This information was used to select the subset of drawings appropriate for each of the CVI subjects' nonverbal intelligence level, expressed as an age equivalent. Recognition performance on this subset of drawings was impaired in 16 children (72.7%), but was unrelated to visual acuity. We conclude that these children have a specific visual perceptual impairment, which is not reducible to any nonverbal intelligence impairments they might suffer.

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Electroencephalographic coherence abnormalities in preterm diplegia

Koeda¹,

Takeshita²

1998

Pediatric Neurology

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Role of MRI scanning in the diagnosis of cerebral visual disturbance

Cited by 12 publications

References 3 publications

Cerebral Visual Impairment in Cerebral Palsy: Relation to Structural Abnormalities of the Cerebrum

Cerebral Visual Impairment in Cerebral Palsy: Relation to Structural Abnormalities of the Cerebrum

Impaired Visual Perceptual Performance on an Object Recognition Task in Children with Cerebral Visual Impairment

Electroencephalographic coherence abnormalities in preterm diplegia

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