Developing your skills


06
May 2018

Mid and high end veterinary ultrasound machines invariably come with Colour Doppler and Pulsed Wave (PW) Doppler. They frequently come with Continuous Wave Doppler capability as well, although this is usually only active on phased array probes. Here, we look at the main differences between pulsed and continuous wave dopplers, as well as their different and complimentary uses.   Pulsed Wave Doppler: When you enter into Pulsed Wave (PW) mode, you will be able to move the sampling area (usually a square or rectangular box along a single line) over the region you......

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16
Oct 2017

This page is a continuation of the discussion on Tissue Specific Imaging. Accurate measurement of fat depth and muscle thickness is very important in certain applications. If the speed of sound is assumed to be traveling at 1540m/s, but is in fact traveling at 1430m/s through fat, a hypothetical 10cm fat thickness would be overestimated by 0.77cm. The mathematics of this is as follows: Speed = distance/time, so time = distance/speed When scanning through 10cm of soft tissue: t = (2*0.10m)  / 1540m/s (speed of sound through soft tissue) t = (2*0.10) / 1540......

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13
Oct 2017

The Scan Pad is a basic black and white portable ultrasound system, but is equipped with a wide range of functions and the ability to customise its operation for more advanced users. This is vital for researchers, scientists and veterinarians working in highly specialised areas. It can even be important for the serious lay scanner, who may, in time, expand the scope of their work to cover a wide range of species. The ability to customise one’s machine to different species and applications is clearly very important. For those just starting out......

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29
Jul 2017

Once upon a time, M-mode was cutting edge technology. It represented a huge leap forward from a single A-mode line, which showed only the distance of the reflector from the transducer and its amplitude, as displayed against an x and y-axis, respectively. M-mode was therefore a lot more user-friendly, with amplitude of returned echos being depicted by different amplitudes on the image (such that strong reflectors were shown in bright white, weaker reflectors in shades of grey, and non-reflectors in black, as we are very familiar with in modern B-mode systems), and movement......

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01
Mar 2017

Larger vet hospitals are beginning to look into the potentials of portable ultrasound as a screening tool, in the hands of their non-specialist vets or even their vet nurses. For smaller practices though, budgets either do not allow for the introduction of ultrasound equipment, or if there is a machine, only one or two vets know how to use it. The vision of portable ultrasound as the modern-day stethoscope has certainly not yet been realised in the veterinary world. In the human realm, this has become a reality in a number of emergency departments......

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