| Autor: |
Craven, C M, Naik, K S, Blanshard, K S, Batchelor, A G G, Spencer, J A |
| Zdroj: |
The British Journal of Radiology; July 1995, Vol. 68 Issue: 811 p724-730, 7p |
| Abstrakt: |
21 infants with craniosynostosis were studied with a new three-dimensional (3D) computed tomography (CT) methodology. We describe technique optimization using multiple spiral data acquisitions with low dose (85 mAs) technique. One caudal volume of 3 mm slice thickness was obtained with a further two volumes of 1 mm slice thickness at the vertex. Image reconstruction of spiral raw data allowed overlapping 3 mm sections to be generated without the dose increase that would result from conventional axial CT scanning. We illustrate common technical artefacts of 3D CT and explain their cause and solution. A dramatic dose reduction to the lens was achieved with no loss in 3D image quality. Lens dose was 8.91 mSv compared with 24.6 mSv using the standard paediatric head technique. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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