Published November 9, 1992 | Version v1
Miscellaneous Metadata-only

Strategy of image-information-guided dose rate adjustment in digital X-ray television

Creators

Description

The experiments were so designed and carried out that it was even possible for extremely overexposed or underexposed displays to be ascertained within the framework of this study. They were based on observations in phantoms suitable to simulate situations encountered in actual practice. These permitted variations in patient volume (using different water volumes) just as well as the creation of any desired organ constellation (by insertion of bone material, etc.). It is one requirement of this experimental procedure that the X-ray unit used can be operated without automatic dose rate adjustment. A computer equipped with Frame-Grabber card may serve as an image memory. (orig.)

Availability note (English)

Available from TIB Hannover: H93B2103.

Abstract (German)

Die Planung und Ausfuehrung der Experimente wurde so ausgelegt, dass auch Extremsituationen (ueber- und unterexpositionierte Szenen) erfasst wurden. Die Experimente basierten auf der Arbeit mit praxisnahem Phantomen. Diese gestatteten die Variation der Patientendicke (ueber Wasserfuellstaende) ebenso wie beliebige Veraenderungen der Organgruppe (Einbringen von Knochenmaterial usw.). Die Experimentiermethodik erfordert, dass die automatische DLR der Roentgenanlage ausser Betrieb genommen werden kann - zur Bildspeicherung ist ein PC mit Frame-Grabber Karte vorzusehen. (orig.)

Additional details

Additional titles

Original title (German)
Strategie fuer eine bildinhaltsgestuetzte Dosisleistungsregelung beim digitalen Roentgenfernsehen

Publishing Information

Imprint Pagination
98 p.

INIS

Country of Publication
Germany
Country of Input or Organization
Germany
INIS RN
26059706
Subject category
S62: RADIOLOGY AND NUCLEAR MEDICINE;
Resource subtype / Literary indicator
Thesis, Non-conventional Literature
Descriptors DEI
ALGORITHMS; AUTOMATION; BIOMEDICAL RADIOGRAPHY; DATA PROCESSING; DIGITAL SYSTEMS; DOSE RATES; ERRORS; IMAGE PROCESSING; IMAGES; MICROPROCESSORS; ON-LINE CONTROL SYSTEMS; PATIENTS; SIGNALS; TELEVISION
Descriptors DEC
ANIMALS; CONTROL SYSTEMS; DIAGNOSTIC TECHNIQUES; ELECTRONIC CIRCUITS; MAMMALS; MAN; MEDICINE; MICROELECTRONIC CIRCUITS; ON-LINE SYSTEMS; PRIMATES; VERTEBRATES