Emi, LLC

Stephen Ronald Bates

Godfrey N Hounsfield

Colin C Oliver

Brian Herbert Lill

In a computerized tomographic apparatus, different detectors are caused to receive radiation along substantially the same beam path through the body in order to permit the evaluation of differences in performance of the detectors. This evaluation is average with other evaluations made in respect of the same detector for other beam paths so as to reduce the risk that erroneous performance differences may be evaluated in the event that any of the relevant beam paths lies adjacent a bone edge in a patient's body. Also disclosed are techniques for electronically deflecting the radiation so that part at least of the radiation is taken clear of the body and can be detected to provide reference signals.

Radiography

In order to obtain rapidly a representation of the results of a computerized tomographic examination of a patient, some of the data obtained during the examination is ignored. The representation is thus produced rapidly, as desired, but on the basis of less information than is actually available. A representation using all the available information can be produced later, as required.

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Bourne End, United Kingdom

Stephen Ronald Bates