Method for the automatic adjustment of exposure parameters in an

Details Method for the automatic adjustment of exposure parameters in an Method for the automatic adjustment of exposure parameters in an

1996-05-08

1998-03-24

Porta, David P.

X-ray or gamma ray systems or devices

Specific application

Tomography

378 38, 378 39, A61B 614

Patent

active

057321191

ABSTRACT:
The invention relates to a method for the automatic adjustment of exposure parameters in an imaging apparatus operating on linear tomographic principles and intended for the slice imaging of the region of denture and temporomandibular joints. The method includes a stage for measuring a radiation (8) transmitted through the skull and for adjusting exposure parameters on the basis of the measuring result. According to the invention, a first imaging sequence, at the start of which the exposure parameters are adjusted, is commenced from such a direction (11a, 11b) that the passage of radiation is secured through thick skull portions and that a subsequent imaging sequence in a direction (12-17) other than the previous direction is carried out by varying the exposure parameters programmatically by a predetermined deviation or by effecting the automatic adjustment of exposure parameters on the basis of new measuring results, whose starting parameters have been obtained by varying the exposure parameters programmatically by a predetermined deviation.

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