The power spectral densities of the random bending strains at all points on the structure are estimated by the numerical differentiation of cross-spectral densities of the vibration measured by two transducers, a fixed reference transducer and a roving (or scanning) transducer.
EUS was performed by a single observer (JB, a consultant radiologist experienced in EUS) using a 7.5/10 MHz radial scanning transducer with water filled probe cover.
An annular array sector scanner (type Scanner 250, Pie Medical b.v Maastricht, the Netherlands) with a 5 MHz multiple scan angle transducer was used as described by [ 12].
A detailed wind tunnel test has been carried out on a motionless flat-box bridge deck model with three special grid-generated wind fields using an electronically scanned pressure transducer system, enabling almost instantaneous capture of 372 pressure tap signals from 6 sections of 62 different spacing taps at each section.
The organs and vessels in abdomen were scanned with transducer of RMV 704 or 710B, the image depth was about 12 mm, and the carotid artery was examined with transducer of RMV 704, the image depth was about 6 mm.
Images were obtained by an experienced operator (GW) using a commercially available system (MyLab30, Esaote SpA, Firenze, Italy) equipped with a 3.5 MHz sector scanning electronic transducer in the left lateral decubitus position.
It accounts for the interaction of the beam with defects (within a piece made of isotropic material) and specimen boundaries and simulates the transducer scan over the piece for synthesizing images comparable with measurements.
Such reverberations can occur between the phantom's scanning window and transducer components as well as within the scanning window between its surfaces.
For normal ovaries, ovaries without any detectable tumor, and atrophic ovaries, the region surrounding the ovary was scanned and the transducer was swept through the entire area for complete scanning of the ovary.
By scanning with the transducer medial to the pulse of the femoral artery, the image of both femoral vessels is displayed on the 2-inch square screen.
The magnetic sensor precisely and consistently captures changes in magnetic fields produced by the generator and detects changes in the location, direction, and rotation of the transducer scanning the patient using the detector unit.
