The Major Types Of Medical Imaging
There are four frequent types of imaging used extensively today. While all of them help peer into the human body, the technology they use is unique.
The earliest form of fashionable imaging continues to be one of the most used. Radiography (as using X-ray images in a medical context is called) works because X-rays projected at an object will show differences in density. The image shows all of the underlying structures superimposed on one another.
CT stands for "Computed tomography." A computer is used to compile a three-dimensional projection primarily based on a set of -dimensional X-ray images. The X-rays are taken in fast succession around a single axis of rotation. They're high-contrast, meaning that slight variations in tissue are simply observable. In addition they don't have any issues with troublesome superimposition.
Instead of using light to image an object, ultrasounds measure the reflection of sound to supply images. Typically, this is used to look "beneath" a medium to view the underlying structure. Utilizing the same technology that helps a bat hunt, doctors can use ultrasounds to observe an infant in utero.
Electrocardiography (or EKG) just isn't quite the identical as the other three types, as it instead produces a projection of electrical exercise of the heart. This permits medical doctors to watch stress on the guts, specifically if a patient is at risk of having a cardiac episode or going into shock.