&lt;title&gt;On The Characteristics Of Electron Radiographic Images In Diagnostic Radiology&lt;/title&gt;

Ep, Muntz; Lewis, J. T.; Azzarelli, T.; Welkowsky, M.; Morsell, A. L.; Kaegi, Emil M.; Jacobson, George

doi:10.1117/12.954291

Cited by 5 publications

(1 citation statement)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The gas is situated between two electrodes and the charges formed are collected on an insulating foil stretched over one of the electrodes. A great deal of work has already been undertaken on the physical processes involved in the production of the latent image (Fenster and 0031-9155/80/050893+ 10$1.50 @ 1980 The Institute of Physics , Fenster et af 1974, Jeffrey et af 1974, Johns et a1 1974 and also its development (Boag et af 1974, Plewes and Johns 1975, Muntz et al 1975. Most of this work has been concerned with the use of gas at high pressures as the x-ray absorbing medium.…”

Section: Introductionmentioning

confidence: 99%

An atmospheric pressure inography system suitable for mammography

Moores¹,

Ramsden²,

Asbury³

1980

pmb

View full text Add to dashboard Cite

Ionography is a possible replacement for silver halide based imaging systems in diagnostic radiology. This type of imaging depends upon the ionisation produced in a gas by incident x-radiation. The ions formed are collected on a plastic foil and the image is made visible by a suitable development process. The physical design properties which can affect sensitivity and image quality of an ionography system are outlined in this paper. Based upon the requirements of adequate sensitivity and resolution an atmospheric pressure ionography system is described which has been designed primarily for use in mammography. Freon 13B1 gas was chosen as the x-ray absorbing medium because it contains a relatively high atomic number atom (bromine, Z = 35) and also has a high density. It is a relatively cheap gas, has a high breakdown potential and has satisfactory resolving capability, particularly when employed at atmospheric pressure with low energy x-ray beams. The performance of the system is discussed in terms of sensitivity and resolution. Problems associated with an atmospheric pressure system are outlined and possible solutions described. Preliminary clinical results obtained with the system are also presented.

show abstract

Section: Introductionmentioning

confidence: 99%