[The organization and equipping of the photolaboratory in the radiography department].
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Biomedical subjects
Publications and source records attributed to M I Tombak.
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The main factor of a good quality of orthopantomograms is a correct position of the occlusion plane and chin support, the straightening of the cervical vertebrae, head fixation and a choice of physicochemical conditions for exposure. All these conditions ensure the standardization of orthopantomography, reducing to the minimum errors in investigations.
Typical errors in teeth roentgenography reproduced in experiment, indicate that considerable disproportional distortions of images of anatomical structures which are decisive for radiodiagnosis, may occur in these cases. These distortions influence the accuracy of assessment of the condition of periapical tissues, marginal parts of the alveolar process, cavity sizes, and the actual end of the root of the canal. Standardization of intraoral roentgenography is based on a strict position of the patient's head, angle of inclination and alignment of a tube. Specialized P3-1 film should be used. Its processing should strictly correspond to the instructions of a manufacturing factory otherwise the quality of an image is deteriorated and an effective equivalent dose on the vital organs is increased.
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Based on the cost computations for automatic and manual processes of the film development the conditions for useful operations of automatic developing machines are derived. The analysis is given to the problem of an adequate supply of X-ray photolaboratories with necessary equipment and staff.
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