Formation of the tomographic image: with special reference to blurring
The ability of the usual types of tomographic systems to produce blurring of detail from adjacent object planes is analyzed experimentally and mathematically. The further development of tomography must be dependent on a better understanding of its character. Different tomographic movements have been compared and certain possible technical errors that may deteriorate the blurring as well as other disturbing factors influencing the tomographic result are discussed. The distribution of exposure intensity within the transitional zone represents the blurring effects on contours and makes possible a graphical comparison of different systems. The principles of obtaining optimal efiects of blurring are considered and a method is presented that utilizes a combinalion of tomograms of the same plane produced by different movements. A special copying technique preserves and collects valuable detail but reduces disturbing and irrelevant elements. (auth)
- Research Organization:
- Originating Research Org. not identified
- NSA Number:
- NSA-29-029451
- OSTI ID:
- 4326912
- Journal Information:
- Acta Radiol., Suppl., no. 318, Suppl, pp. 1-58, Journal Name: Acta Radiol., Suppl., no. 318, Suppl, pp. 1-58; ISSN ARASA
- Country of Publication:
- Sweden
- Language:
- English
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