Acta Radiologica: Supplementum, Volumes 357-3601978 - Radiology |
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Page 11
... noise ratio . LASKY et coll . ( 1973 ) claim that it is possible to increase the signal - to - noise ratio by a factor of 10 by using the photon counting method instead of the dc method . NIEWIADOMSKI ( 1972 ) reports that the ...
... noise ratio . LASKY et coll . ( 1973 ) claim that it is possible to increase the signal - to - noise ratio by a factor of 10 by using the photon counting method instead of the dc method . NIEWIADOMSKI ( 1972 ) reports that the ...
Page 20
... noise ratio sure of the statistical uncertainty in the estimate of the signal . E ( S ) which is a mea- E ( S ) can ... noise ratio is increased by less than 5 per cent if h is increased from 5 to 10. This slow dependence of the signal ...
... noise ratio sure of the statistical uncertainty in the estimate of the signal . E ( S ) which is a mea- E ( S ) can ... noise ratio is increased by less than 5 per cent if h is increased from 5 to 10. This slow dependence of the signal ...
Page 51
... noise in TL measurements for both the photon counting and the charge integration method from experiments . However ... noise in the emission of light from the dosemeter and the read - out unit have been reduced to such levels that it is ...
... noise in TL measurements for both the photon counting and the charge integration method from experiments . However ... noise in the emission of light from the dosemeter and the read - out unit have been reduced to such levels that it is ...
Contents
INTRODUCTION | 7 |
TECHNICAL ASPECTS OF SOFT TISSUE RADIOGRAPHY | 20 |
METHODS | 29 |
Copyright | |
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abnormalities absorbed dose afterpulses animals arthritis background signal birds breast carcinoma broilers calcifications cent charge integration coll conduction band condyle correlated dark current dark pulse days of age detected diagnosis disease distal Dosimetry dynode electron affinity endochondral ossification energy distribution epiphyseal exoelectron emission experimental femoral fibroadenosis frequency glow curve growth plate histologic hock joint horses incidence increased irradiation irregular joint cartilage leg weakness leghorns lesions light lymph nodes measurements medial months old necropsy noise non-radiation induced signals non-radiation induced TL normal number of calcifications Olsson optical osteoarthrosis osteochondritis dissecans osteochondrosis oxygen photocathode photon photon counting Phys pigs PM tube proximal tibia pulse charge distribution radiation radiographic radiologic read-out chamber Reiland retained cartilage sample sensitivity signal-to-noise ratio significative number skeletal small absorbed doses specimen subchondral bone surface tarsometatarsus temperature thermoluminescence thick thickened tibia tibial dyschondroplasia tion tissue TL signal tumour vitamin voltage zone