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Detection of choroidal calcium by computed tomography scan quantitative computerized tomography: a clinically useful diagnostic tool.

Abstract：

OBJECTIVE:Quantitative computerized tomography (QCT), a scanning method routinely used to classify tissues based on their radio density, was used to detect choroidal calcification. DESIGN:Case reports. PARTICIPANTS:Two patients with known or suspected choroidal calcium-choroidal osteoma (CO) and pseudoxanthoma elasticum (PXE) and five normal control subjects were assessed. INTERVENTION:The CT scan of choroid, B-scan ultrasound, fluorescein angiography. MAIN OUTCOME MEASURES:The QCT scan used to detect the presence of calcium based on a readout greater than 90. RESULTS:Calcium was detected bilaterally, as predicted, in PXE, and in both eyes of CO, although only one eye had a clinically noted lesion. No control eye gave a scale readout consistent with calcium. No findings suggestive of calcium were noted with B-scan ultrasound or fluorescein angiography in PXE or CO. CONCLUSION:The QCT can detect calcium in the choroid when B-scan ultrasonography and CT scan fine sectioning fail to identify calcium despite high clinical suspicion.

journal_name

Ophthalmology

journal_title

Ophthalmology

authors

Jokl DH,Tsai N,Kreps S

doi

10.1016/S0161-6420(99)90363-9

subject

Has Abstract

pub_date

1999-09-01 00:00:00

pages

1841-6

issue

9

eissn

0161-6420

issn

1549-4713

pii

S0161-6420(99)90363-9

journal_volume

106

pub_type

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