energy subtraction

energy subtraction

digital radiography using higher- and lower-energy exposures, either by double exposure at 2-kV levels or by interposing a copper filter that absorbs the lower-energy photons between two phosphor plates, with computer calculation of high-Z and low-Z images (bone and soft tissues, respectively); makes use of the fact that lower-energy x-rays are absorbed by more high-Z substances, such as calcium and copper, because of the photoelectric effect.
See also: Z, photoelectric effect, phosphor plate.

energy subtraction

a radiographic technique in which two different x-ray beams are used alternately to provide a subtraction image resulting from differences in photoelectric interaction.

en·er·gy sub·trac·tion

(en'ĕr-jē sŭb-trak'shŭn)
Digital radiography using higher- and lower-energy exposures, either by double exposure at 2-kV levels or by interposing a copper filter that absorbs the lower-energy photons between two phosphor plates, with computer calculation of high-Z and low-Z images (bone and soft tissues, respectively); makes use of the fact that lower-energy x-rays are absorbed by more high-Z substances, such as calcium and copper, because of the photoelectric effect.
References in periodicals archive ?
Fujifilm's flagship digital radiography room replacement suite will bring Dual Energy Subtraction and Tomosynthesis to DR
will integrate two advanced applications to further extend diagnostic capabilities: Dual Energy Subtraction (DES) and Tomosynthesis (TS)* .
Dual energy subtraction radiography--Adding critical information to the diagnosis of chest disease.
The technology is used in the company's ClearRead +Detect[TM] software, an application that identifies and circles potentially cancerous lung nodules on a bone-suppressed chest X-ray image, and/or images captured by modalities such as dual energy subtraction (DES).
Fujifilm is also about to release two new Advanced Application capabilities for its AcSelerate line, Dual Energy Subtraction (DES) and Tomosynthesis (TS).
Dual Energy Subtraction (DES) produces three views from two exposures: traditional, bone only and soft tissue only.
DAYTON, Ohio -- Software by Riverain Technologies significantly improves radiologists' ability to detect potentially cancerous lung nodules in X-ray images, and might be a cost-effective alternative to dual energy subtraction (DES) imaging, according to two new studies being presented at the 20th Anniversary Meeting of the European Society of Thoracic Imaging (ESTI), June 22-24, in London.
Additionally Swissray will exhibit its unique package for Orthopedic Imaging as well as advanced imaging applications such as Computed Assisted Diagnostics, Real-Time Dynamic Radiography and Dual Energy Subtraction.
Dual Energy Subtraction - GE's outstanding digital X-ray applicationeliminates overlying bone obstruction from chest or abdominal images.
Advanced Applications on Discovery XR640: Advanced applications offered on the Discovery XR640, including Dual Energy Subtraction, VolumeRAD[TM] (digital tomography) and Auto Image Paste have changed the ways GE customers think about X-ray and how to best use the technology with their patient populations.
GE's Dual Energy Subtraction, a first-of-its-kind digital X-ray technology, can help doctors see these "hidden" lung cancers by displaying a digital image of only the soft tissue in the chest - without the bones - allowing doctors to better detect and diagnose lung cancer.
GE has proven itself the leader in DR imaging by introducing advanced applications, such as dual energy subtraction.
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