Health Physics Aspects of the EMI Computerized Tomography Brain Scanner

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Abstract
The EMI computerized tomographic cranial scanner is one of the 1st radiological systems incorporating an on-line computer. The result is an increase in ability to visualize such tissues as grey matter and white matter, blood pools and tumor volumes. This advance has already begun to revolutionize radiological practice. Because of the totally different configuration of this unit, concern was expressed over the dosages received by the patient; consequently, healthy physics aspects of this unit were studied. Doses received by the surface of head and interior brain points and by the lens of the eye and gonads are reported. X-ray output, beam half-value layers and barrier shielding requirements are reported and discussed.

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