transducer

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transducer

 [trans-doo´ser]
a device that translates one physical quantity to another, e.g., pressure or temperature, to an electrical signal.
neuroendocrine transducer a neuron, such as a neurohypophyseal neuron, that on stimulation secretes a hormone, thereby translating neural information into hormonal information.
pressure transducer an electronic device that converts pressure (such as blood pressure) into electrical signals that can be recorded graphically and monitored.

trans·duc·er

(tranz-dū'sĕr),
A device designed to convert energy from one form to another.
See also: transduction.

transducer

/trans·du·cer/ (-doo´ser) a device that translates one form of energy to another, e.g., the pressure, temperature, or pulse to an electrical signal.
neuroendocrine transducer  a neuron, such as a neurohypophyseal neuron, that on stimulation secretes a hormone, thereby translating neural information into hormonal information.

transducer

(trăns-do͞o′sər, -dyo͞o′-, trănz-)
n.
Biology Something, such as a receptor in a cell membrane, that transmits a signal within a cell or from the exterior of a cell to its interior.

transducer

[-d(y)o̅o̅′sər]
Etymology: L, trans + ducere, to lead
a hand-held device that sends and receives ultrasound signals. It changes electric impulses into soundwaves, receives reflected soundwaves, and converts them back into electric energy.

transducer

Instrumentation A device that transforms one form of energy to another–eg, a photocell that converts light into electrical energy; it is the major component in ultrasonographic devices, and contains an emitting and receiving piezoelectric crystal

trans·duc·er

(trans-dū'sĕr)
A device that converts energy from one form to another (e.g., from electrical energy into ultrasonic energy).

transducer

(trans-doo'ser, tranz-, -du') [L. traducere, transducere, to lead across]
1. A device that converts one form of energy to another. The telephone is an example. It is used in medical electronics to receive the energy produced by sound or pressure and relay it as an electrical impulse to another transducer, which can either convert the energy back into its original form or produce a record of it on a recording device. Synonym: probe
2. In ultrasonography, an electromechanical device that emits high-frequency sounds and receives their echoes.

pulse-echo transducer

An ultrasonic transducer that sends out intermittent (pulsed) signals rather than continuous sound waves and receives the echo signal. Pulsed-wave Doppler ultrasound is used to measure blood flow and the depths from which echoes originate.

continuous wave transducer

An ultrasonic transducer that sends a constant and continuing signal that is not pulsed.

transrectal transducer

A cylindrical ultrasonic transducer inserted into the rectum to evaluate the prostate, rectum, and urinary bladder and to guide prostate biopsy.
Enlarge picture
ULTRASONIC TRANSDUCER: ultrasonography of the abdomen

ultrasonic transducer

A device used in ultrasound that sends and receives the sound wave signal.
See: probe; illustration

Transducer

A device that converts electrical signals into ultrasound waves and ultrasound waves back into electrical impulses.

transducer

a device that transforms one form of energy into another form of energy; a quartz crystal vibrates when subjected to an electrical charge and generates high frequency ultrasound waves (i.e.: the piezo-electrical effect of a quartz transducer in the head of an ultrasound machine)

trans·du·cer

(trans-dū'sĕr)
A device that converts energy from one form to another.

transducer (tranzdoo´sur),

n a device that is activated by power from one system and then supplies a different form of power to a second system; used to convert electric energy into mechanical energy in ultrasonic and sonic scalers.

transducer

a device that translates one physical quantity to another, e.g. pressure or temperature to an electrical signal. In ultrasonography, the device that emits sound waves.

annular array transducer
an ultrasound transducer with crystals arranged in concentric rings with different frequencies of sound produced. It allows for a greater depth of focus.
linear array transducer
an ultrasound transducer with crystals arranged in a line. It gives a rectangular field of view.
neuroendocrine transducer
a neuron, such as a neurohypophyseal neuron, that on stimulation secretes a hormone, thereby translating neural information into hormonal information.
sector transducer
an ultrasound transducer which produces a fan-shaped field of view.
References in periodicals archive ?
10] to stimulate BEAS-2B cells transduced with a lentiviral vector encoding a luciferase reporter gene driven by a concatenated NF-[kappa]B consensus sequence (NF-[kappa]Btr-fLuc).
Target cells transduced with recombinant virus produced using the pLNCLZRz vector resulted in the ability to metabolize X-gal.
After 4 weeks, new bone occupied approximately 90% of the defects that received the BMP-7 transduced cells," Krebsbach reported.
Our data suggest that the transduction of transcription factors using SeV vectors facilitates mPSCs differentiation into insulin producing cells and showed the possibility of regenerating B-cells by using transduced PSCs," the researchers concluded.
Under the protocol, patients will also receive autologous dendritic cells (DC) processed ex vivo in addition to the TCR-gene transduced PBMCs, that are expected to enable enhancement of patients' immunity to attack the melanoma cells.
As in other tissues, the effects of estrogen on the prostate are likely transduced primarily by ERs.
Other challenges include establishing long-term and stable expression of transgenes, ensuring survival and expansion of transduced ceils in vivo, and improving delivery of gene therapy.
Wilbur and Collins (1973) proposed that all environmental variation can be transduced by detecting food availability via growth rate.
Benitec and ReNeuron have completed a series of in vitro experiments that demonstrate that stem cells transduced with ddRNAi-expression constructs produce exosomes that are effective at delivering expressed shRNAs to target (cancer) cells and to knock down a specific gene in those cells.
Gaithersburg, MD) has patented a mixed cell composition to generate a therapeutic protein at a target site by providing a first population of mammalian cells transfected or transduced with a gene that is sought to be expressed, and a second population of mammalian cells that have not been transfected or transduced with the gene, wherein endogenously existing forms of the second population of mammalian cells are decreased at the target site, and wherein generation of the therapeutic protein by the first population of mammalian cells at the target site stimulates the second population cells to induce a therapeutic effect.
A new paradigm is needed to understand how environmental signals can be transduced to an endocrinological result.