Download Motor unit and Electromyogram (EMG )

Radiology
Computed Tomography
In the field of diagnosis, computed tomography (CT) has played a major role in scanning, giving detailed
images of the structures inside a body. This technology has led to a detailed study of the function and
problems pertaining to the human body. In CT, an x-ray source and x-ray detectors, enclosed in a
doughnut-shaped assembly, move in a circular path. In general, multidetectors are used as they allow
quicker scanning and high-resolution of images. A patient lies on the motorized table that moves to and
fro through the assembly. X-ray images of the desired body part are taken from multiple angles and are
reconstructed into 2D or 3D images (tomograms).
This technique of tomographic imaging can also be applied to radionuclide scanning such as single-photon
emission CT (SPECT) and positron-emission tomography (PET), in which the sensors encircle the patient
in order to uptake radiation emitted by the body. Furthermore, computer techniques convert the data
obtained from the sensor into tomographic images.
In this study, we elaborate on multislice spiral computed tomography (MSCT), which is a promising
technique for clinical applications such as lesion detection and noninvasive coronary angiography.
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