backscatter


Also found in: Dictionary, Thesaurus, Legal, Encyclopedia, Wikipedia.
Related to backscatter: backscatter spam, backscatter radiation

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.
References in periodicals archive ?
(2016) found signal artifacts in the free troposphere in CL31 attenuated backscatter profiles, characterized by negative values in cloud-free regions due to a shift of the raw data introduced by the system firmware, and developed a method to quantify these artifacts and correct for them.
Dobson, "Microwave backscatter dependence on surface roughness, soil moisture, and soil texture: part I-bare soil," IEEE Transactions on Geoscience Electronics, vol.
where [[beta].sub.m] and [[beta].sub.p] are the molecular and particle backscatter coefficients, respectively.
The backscatter devices consists of an antenna, a switching transistor and a load capacitance.
Lee, "Evaluation of ADCP backscatter inversion to suspended sediment concentration in estuarine environments," Ocean Science Journal, vol.
Point and area densitometry, a built-in software of Pentacam, displays results on the densitogram, enabling the measurements of structural backscatters in any desired points of the images taken.
MacLennan et al., 2002) was used to identify backscatter consistent with that of fishes with swim bladders.
[beta] is the backscatter coefficient (in units of [m.sup.-1] [ster.sup.-1]), and [alpha] is the extinction coefficient (in units of [m.sup.-1]).
A portion PS of the source flux invades the channel after crossing across the source-channel barrier in which a portion PC of the flux entered into the channel flowed across and depart from the drain and a left portion BC =1 - PC backscatters from the channel and turn back into the source.
Researchers claim Wi-Fi backscatter tag can communicate with a Wi-Fi device at rates of 1kbps with about 2 meters between the devices.
When backscatter X-rays interact with low-density objects like most organic matter, they detect the radiation reflecting from the objects and emit white images, he said.
The present study aimed to develop a QUS method using a pulse-echo technique to extract five parameters: apparent integrated backscatter (AIB), frequency slope of apparent backscatter (FSAB), time slope of apparent backscatter (TSAB), integrated reflection coefficient (IRC), and frequency slope of integrated reflection (FSIR) by processing ultrasonic backscattered and reflection echoes to characterize cortical and trabecular bone from healthy bone diaphyses of Wistar rats in vivo.