backscatter

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Related to backscattered: backward scattering

backscatter

 [bak´skat″er]
in radiology, radiation deflected by scattering processes at angles greater than 90 degrees to the original direction of the beam of radiation.

back·scat·ter

(bak'skat-ĕr),
Secondary radiation deflected more than 90° from the primary beam. See: scattered radiation.

backscatter

Cytometry
One of two parameters measured in flow cytometry, which is detected at a 90º angle to a laser light beam and corresponds to the fluorescence of individual cells or intracellular components stained with rhodamine- or isothiocyanate-labelled monoclonal antibodies.

Nuclear physics
Electromagnetic radiation—usually understood to be photons, but also ultrasonic waves, etc.—that reflects > 90º from the source, or back in the general direction of a source.

back·scat·ter

(bak'skat-ĕr)
Deflection of diagnostic radiation at angles exceeding 90 degrees to the direction of the beam.

backscatter

in radiology, radiation deflected by scattering processes at angles greater than 90 degrees to the original direction of the beam of radiation. Important in radiotherapy when estimating surface exposure dose.
References in periodicals archive ?
An event from a veto paddle in coincidence with the energy detector tags the backscattered electron.
Examining the start and stop TDC signals from the energy detector/veto paddle combination allowed the identification of backscattered events.
Accordingly, it is believed the singles tail contains electrons which have backscattered on the beamline elements and/or x rays produced by such events.
Figure 6 shows the energy of the backscattered electrons determined by subtracting the energy deposited in the energy detector from the beam energy and compares it to an ETRAN Monte Carlo calculation convo- luted with a Gaussian to account for the energy resolution of the detector.