Radiography

Details Radiography Radiography

1977-06-29

1980-09-16

Krass, Errol A.

Boots, shoes, and leggings

250358R, 250445T, G01N 2302

Patent

active

042233844

ABSTRACT:
In a computerised tomographic (CAT) X-ray apparatus passage of the radiation through high absorption (bone) regions can change a characteristic of the radiation, such as its frequency spectrum. This can introduce error into the final representation. Correction is provided by computing a first representation, identifying areas of bone and then determining corrections for those areas which can be used to provide a subsequent move accurate representation. Errors caused by scattering can also be compensated in this way.

REFERENCES:
patent: 3809904 (1974-05-01), Clarke et al.
patent: 3832551 (1974-08-01), Bartlett et al.
patent: 3878373 (1975-04-01), Blum
patent: 3944830 (1976-03-01), Dissing
patent: 4063074 (1977-12-01), Wagner
patent: 4069422 (1978-01-01), Hounsfield

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