Another reason why probes are manufactured in different sizes and shapes is because they could be inserted through openings of the body. This is helpful since the probe remains close to the body; therefore, it can obtain more detailed images of the organ. There are four different types of ultrasound: A-mode, B-mode, M-mode, and Doppler mode. Each have their own respective uses:
A-mode: The simplest type of ultrasound, a single probe is streaked across the body, and the image contains echoes plotted on the probe to represent depth. Also,
ultrasound probes aimed for only one major organ or body part, called therapeutic ultrasound, is classified under the A-mode category, mainly focusing on destructive wave energy. B-mode: Many transducers simultaneously scan a plane in the body that radiologists view as a 2-D