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The Future of Ultrasound Technologies, Applied pressure between the probe…
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- Applied pressure between the probe and patient.
the orientation, the position of the probe with respect to the patient also the amount of pressure that's being applied between the probe and the patient.
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the quality of the image depending on the relative mass the level fat of the patient because fat it has a different speed of sound compared to muscle or other tissues
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doctor tend to have to press harder to get the probe closer to the organ of interest and closer to the body and so that that implicit pressing harder helps to prove the image that they are acquiring
someone who images for more than 10 years has a 70% likelihood to have some kind of a musculoskeletal problem.
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importance of knowing how hard are we pressing on the body dramatically impacts that property estimation that you can extract from the imagery
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- Assumed speed of sound in image reconstruction.
when doctors using pulse echo, it will send sound into the body you
the machine will time how long it takes for a pulse to come back and the amplitude of that pulse is then plotted on the b-mode image as a brightness
to construct the image doctors have to assume a speed of sound to convert that time of flight to a real physical dimension
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- Position and Orientation of probe on patient.
if doctors change the orientation and position of the probes a little bit, he get dramatically different slices into the body
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the surface of the structure that you're trying to image to be roughly perpendicular to the axis of your probe otherwise the tissue could serve as a mirror
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The video tell us about some important points that we need to consider when we image using ultrasound. The presenter also point out some error that always the doctor and patient face.
errors introduced by the system by the hardware force or pressure and orientation and position really comes from the interaction between the doctor the probe and the patient
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