You need JavaScript to view this

New intensifier foils in roentgenologic diagnostics

Journal Article:

Abstract

The main components of the foils are the carrier layer and the luminescent layer, which are in direct contact through an adhesive layer. Carrier layer and adhesive layer absorb and reflect parts of the light. In order to reduce this effect, modern foils are slightly dyed, mostly in the complementary colour of the emitted light. The luminescent layer is attached to the carrier layer by means of a binder. The mean binder content of the luminescent layer is about 10% of the weight of the luminescent material. The particle or crystal range between 5 and 10 ..mu..m. The luminescent layer thickness varies between 0.1 and 0.5 mm, according to the intensification. The imposing with luminescents consequently increases from 20 up to 100 mg/cm/sup 2/. In most cases the luminescent layer is protected by a thin layer (10 to 20 ..mu..m thick) of a very resistant and well-transparent synthetic resin. A foil combination consists of a front and a rear foil, the rear foil often providing a higher degree of intensification than the front foil. Foil quality is mainly defined by the intensification factor, quality on its part is characterized by the modulation transmission function and by the particle structure of  More>>
Publication Date:
Sep 01, 1981
Product Type:
Journal Article
Reference Number:
EDB-82-146573
Resource Relation:
Journal Name: Roentgenpraxis; (Germany, Federal Republic of); Journal Volume: 34:9
Subject:
62 RADIOLOGY AND NUCLEAR MEDICINE; BIOMEDICAL RADIOGRAPHY; FOILS; IMAGE INTENSIFIERS; CALCIUM TUNGSTATES; COMPARATIVE EVALUATIONS; ELECTRIC POTENTIAL; FLUORESCENCE; HARD X RADIATION; IMAGE PROCESSING; IMAGES; PHANTOMS; QUALITY CONTROL; RARE EARTH ADDITIONS; SCREENS; SENSITIVITY; X-RAY EQUIPMENT; ALKALINE EARTH METAL COMPOUNDS; ALLOYS; CALCIUM COMPOUNDS; CONTROL; DIAGNOSTIC TECHNIQUES; ELECTROMAGNETIC RADIATION; EQUIPMENT; INORGANIC PHOSPHORS; IONIZING RADIATIONS; LUMINESCENCE; MEDICINE; MOCKUP; NUCLEAR MEDICINE; PHOSPHORS; PROCESSING; RADIATIONS; RADIOLOGY; RARE EARTH ALLOYS; STRUCTURAL MODELS; TUNGSTATES; X RADIATION; 550602* - Medicine- External Radiation in Diagnostics- (1980-)
OSTI ID:
5103680
Country of Origin:
Germany
Language:
German
Other Identifying Numbers:
Journal ID: CODEN: ROPXA
Submitting Site:
HEDB
Size:
Pages: 387-394
Announcement Date:
Jun 01, 1982

Journal Article:

Citation Formats

Beyer, H K, and Schulze, B. New intensifier foils in roentgenologic diagnostics. Germany: N. p., 1981. Web.
Beyer, H K, & Schulze, B. New intensifier foils in roentgenologic diagnostics. Germany.
Beyer, H K, and Schulze, B. 1981. "New intensifier foils in roentgenologic diagnostics." Germany.
@misc{etde_5103680,
title = {New intensifier foils in roentgenologic diagnostics}
author = {Beyer, H K, and Schulze, B}
abstractNote = {The main components of the foils are the carrier layer and the luminescent layer, which are in direct contact through an adhesive layer. Carrier layer and adhesive layer absorb and reflect parts of the light. In order to reduce this effect, modern foils are slightly dyed, mostly in the complementary colour of the emitted light. The luminescent layer is attached to the carrier layer by means of a binder. The mean binder content of the luminescent layer is about 10% of the weight of the luminescent material. The particle or crystal range between 5 and 10 ..mu..m. The luminescent layer thickness varies between 0.1 and 0.5 mm, according to the intensification. The imposing with luminescents consequently increases from 20 up to 100 mg/cm/sup 2/. In most cases the luminescent layer is protected by a thin layer (10 to 20 ..mu..m thick) of a very resistant and well-transparent synthetic resin. A foil combination consists of a front and a rear foil, the rear foil often providing a higher degree of intensification than the front foil. Foil quality is mainly defined by the intensification factor, quality on its part is characterized by the modulation transmission function and by the particle structure of the luminescent layer. Quality indicators are also the durability of the foils and the steadiness of the crystal arrangement in the luminescent layer. The representation quality is deteriorated also by the irregular blackening of the roentgen film, resulting from the statistic fluctuations of the roentgen quantums, which are absorbed in the luminescent layer. This unfavourable feature, termed quantum noise, increases with decreasing irradiation intensity, with increasing film gradation, and with increasing sensivity of the film-foil-system. Moreover, an optimal image quality is only possible when film and foil are in good contact conditions (in the cassette).}
journal = {Roentgenpraxis; (Germany, Federal Republic of)}
volume = {34:9}
journal type = {AC}
place = {Germany}
year = {1981}
month = {Sep}
}