Results 261 to 270 of about 21,223,740 (304)

Use of the C-scan in evaluation of peripheral lymphedema.

Lymphology, 1997
The C-(cutaneous)-scan constitutes a simple way to evaluate the status of the lymphatic system of swollen and apparently normal extremities. We have termed the procedure C-scan because this expression emphasizes the injection of the radiotracer into the cutis.
C, Ketterings, S, Zeddeman
openaire   +1 more source

Vibro-Acoustography: Speckle Free Ultrasonic C-Scan

2002
In an in vitro experiment the acoustic emission characteristics of broken and intact struts on BSCC valves exhibited different frequency responses and different vibro-acoustography images. The images indicated that the vibration modes of the object could be deduced in addition to the structural integrity of the object.
James F. Greenleaf, Mostafa Fatemi, Randall R. Kinnick   +2 more
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An efficient hole-filling algorithm for C-scan enhancement

AIP Conference Proceedings, 2002
In this paper, a simple interpolation technique is presented that can approximate the broken edges of an image by polynomial approximation of the vicinities of the open ends. A preprocessing step of ‘specifying’ the abscissa for the binary image pixels. This corresponds to re re-arranging the co-existing pixels with a small and monic displacement. This
openaire   +1 more source

An Experimental Investigation of the ‘hosepipe’ Technique of Real-Time C-Scanning

1982
This paper describes an in-vitro experimental study of the ‘hosepipe’ real-time C-scanning technique proposed by Whittingham (1982) at the 10th International Symposium on Acoustical Imaging. This technique was proposed as a means of overcoming the ‘go and return’ time redundancy inherent in conventional pulse-echo C-scanning without recourse to ...
C. P. Oates, T. A. Whittingham
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Alternative to Single-Pixel C-Scan Analysis for Measuring POD

AIP Conference Proceedings, 2005
There can be hundreds of thousands of pixels in a C‐Scan image making the probability of a false‐positive based on a single pixel almost a certainty. To control this propensity for false calls, methods have been proposed, and used with some success, to use both pixel amplitude and signal‐to‐noise ratio (noise being measured from neighboring pixels). We
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Ultrasonic C-Scan Inspection Of Composite Materials

2009
Ultrasonic technique using an automated C-scan has been established as the primary inspection method for composite materials. In this paper, the principles of ultrasonic inspection, the type of defects that may be generated during fabrication and/or during service of fibre-reinforced composites and their detection using ultrasonic techniques are ...
openaire   +1 more source

An Adaptive Down-Sampling Method of Laser Scan Data for Scan-to-BIM

Automation in Construction, 2022
Ziwen Liu, Jingjing Guo, Qi Qiu
exaly  

Neural network correction of ultrasonic C-scan images

A neural network-based approach to the correction of C-scan images is presented. This allows the effects of a finite ultrasonic beam diameter in an immersion experiment to be considered, by training the network on a series of defects of known characteristics. The result is an image which is a better representation of the actual defect.
openaire   +1 more source

C-scan imaging module

NDT & E International, 1992
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PC-based C-scan system

NDT & E International, 1989
openaire   +1 more source