Dual energy scanning beam laminographic x-radiography
Abstract
A multiple x-ray energy level imaging system includes a scanning x-ray beam and two detector design having a first low x-ray energy sensitive detector and a second high x-ray energy sensitive detector. The low x-ray energy detector is placed next to or in front of the high x-ray energy detector. The low energy sensitive detector has small stopping power for x-rays. The lower energy x-rays are absorbed and converted into electrical signals while the majority of the higher energy x-rays pass through undetected. The high energy sensitive detector has a large stopping power for x-rays as well as it having a filter placed between it and the object to absorb the lower energy x-rays. In a second embodiment; a single energy sensitive detector is provided which provides an output signal proportional to the amount of energy in each individual x-ray it absorbed. It can then have an electronic threshold or thresholds set to select two or more energy ranges for the images. By having multiple detectors located at different positions, a dual energy laminography system is possible.
- Inventors:
-
- Grafton, VA
- Yorktown, VA
- Issue Date:
- Research Org.:
- Southeastern Universities Research Associations (SURA), Washington, DC (United States)
- OSTI Identifier:
- 871492
- Patent Number(s):
- 5742660
- Assignee:
- Southeastern Universities Research Association, Inc. (Newport News, VA)
- Patent Classifications (CPCs):
-
A - HUMAN NECESSITIES A61 - MEDICAL OR VETERINARY SCIENCE A61B - DIAGNOSIS
H - ELECTRICITY H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR H05G - X-RAY TECHNIQUE
- DOE Contract Number:
- AC05-84ER40150
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- dual; energy; scanning; beam; laminographic; x-radiography; multiple; x-ray; level; imaging; detector; design; sensitive; placed; front; stopping; power; x-rays; absorbed; converted; electrical; signals; majority; pass; undetected; filter; absorb; embodiment; single; provided; provides; output; signal; proportional; amount; individual; electronic; threshold; thresholds; set; select; ranges; images; detectors; located; positions; laminography; stopping power; scanning beam; signal proportional; energy level; electrical signals; x-ray beam; electrical signal; output signal; x-ray energy; energy range; sensitive detector; energy ranges; energy sensitive; energy x-rays; rays pass; dual energy; /378/
Citation Formats
Majewski, Stanislaw, and Wojcik, Randolph F. Dual energy scanning beam laminographic x-radiography. United States: N. p., 1998.
Web.
Majewski, Stanislaw, & Wojcik, Randolph F. Dual energy scanning beam laminographic x-radiography. United States.
Majewski, Stanislaw, and Wojcik, Randolph F. Thu .
"Dual energy scanning beam laminographic x-radiography". United States. https://www.osti.gov/servlets/purl/871492.
@article{osti_871492,
title = {Dual energy scanning beam laminographic x-radiography},
author = {Majewski, Stanislaw and Wojcik, Randolph F},
abstractNote = {A multiple x-ray energy level imaging system includes a scanning x-ray beam and two detector design having a first low x-ray energy sensitive detector and a second high x-ray energy sensitive detector. The low x-ray energy detector is placed next to or in front of the high x-ray energy detector. The low energy sensitive detector has small stopping power for x-rays. The lower energy x-rays are absorbed and converted into electrical signals while the majority of the higher energy x-rays pass through undetected. The high energy sensitive detector has a large stopping power for x-rays as well as it having a filter placed between it and the object to absorb the lower energy x-rays. In a second embodiment; a single energy sensitive detector is provided which provides an output signal proportional to the amount of energy in each individual x-ray it absorbed. It can then have an electronic threshold or thresholds set to select two or more energy ranges for the images. By having multiple detectors located at different positions, a dual energy laminography system is possible.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu Jan 01 00:00:00 EST 1998},
month = {Thu Jan 01 00:00:00 EST 1998}
}