Its working principle is similar to a high density line detector array, but contrary to an arrangement of single ultrasound detectors it captures snapshots of the acoustic wave pattern at given delay time after the excitation laser pulse, rather than time dependent pressure signals at the predefined detector positions.
(a) Axial CT scan shows small high-density lines within the silicone gel in the right implant, suggestive of collapsed rupture (arrow).
Then, high-density line scans were acquired (1000 A-scans/B-scan), and ImageJ (NIH, Bethesda, Maryland, USA) was used to register up to 100 B-scans and average them to reduce speckle noise.
Figure 4a shows the percentage of trials when the radiologists responded correctly on localisation task, when detection was correct, for low density (blue line) and high density (black line) at the two durations, compared with chance.
The problems of unmanned operation and safety tracing for high speed, high density, complex lines, and adverse weather conditions were addressed.
Here, it is layered like lasagne: six metres of rubbish, half a metre of earth, a chemical treatment and then a huge black sheet of high density polyethylene lining.
The 38 67 hr a.p. images show zones of high density nuclei lining the proximal and distal annular borders; these zones expand towards the mid-annular regions as development progresses.
Mitotic proliferation of sensory cells initiated about 20 24 hrs after pupation (a.p ., in pre-existing zones of high density cells lining the proximal and distal borders of each annulus.
In both non-diapausing and diapausing animals, the presumptive sensory epithelium initiates development, after pupation, with two zones of high density cells lining the proximal and distal borders of each annulus and a large field of low density cells filling the middle annular regions.
