Detector for dual-energy digital radiography

Conference · Thu Aug 01 04:00:00 EDT 1985 · Radiology; (United States)

OSTI ID:5317132

Barnes, G T; Sones, R A; Tesic, M M; Morgan, D R; Sanders, J N

A detection scheme is described that allows one to accomplish dual-energy scanned projection digital radiography without switching the x-ray tube voltage. The method employs a high/low atomic number detector sandwich that simultaneously separates the x-ray beam transmitted by the patient into low and high energy components. To test the method, the response of a scanning linear array of energy-sensitive detectors was simulated, and bone and soft tissue images of an anthropomorphic chest phantom were obtained at 140 kVp. These were compared with similar images obtained by switching the x-ray tube voltage from 80 kVp to a heavily filtered 140 kVp. For comparable entrance skin exposures, the dual-energy detector images required a lower tube load and resulted in higher noise levels. A detector design is also discussed that would result in improved energy separation and lower noise levels.

• Research Organization: Univ. of Alabama Hospitals and Clinics, Birmingham
• OSTI ID: 5317132
• Report Number(s): CONF-851152-
• Conference Information: Journal Name: Radiology; (United States) Journal Volume: 156:2
• Country of Publication: United States
• Language: English

Related Subjects

440101* -- Radiation Instrumentation-- General Detectors or Monitors & Radiometric Instruments
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
BIOMEDICAL RADIOGRAPHY
BODY
BODY AREAS
CHALCOGENIDES
CHEST
DESIGN
DIAGNOSTIC TECHNIQUES
DIGITAL SYSTEMS
DOSIMETRY
ELECTRIC POTENTIAL
ELECTROMAGNETIC RADIATION
ELECTRON TUBES
EQUIPMENT
GADOLINIUM COMPOUNDS
GADOLINIUM SULFIDES
IONIZING RADIATIONS
MEASURING INSTRUMENTS
MEDICINE
MOCKUP
NUCLEAR MEDICINE
PHANTOMS
RADIATION DETECTORS
RADIATIONS
RADIOLOGY
RARE EARTH COMPOUNDS
SCINTILLATION COUNTERS
SCINTILLATOR-PHOTODIODE DETECTORS
STRUCTURAL MODELS
SULFIDES
SULFUR COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
X RADIATION
X-RAY DOSIMETRY
X-RAY EQUIPMENT
X-RAY TUBES
YTTRIUM COMPOUNDS
YTTRIUM SULFIDES