What is CT?
Computed tomography (CT) is a medical test that uses X-rays and computer processing to create cross-sectional images of the human body. CT is the most important examination in our clinical practice, because it can be seen with our naked eyes without opening the lesion part of the body, because of the invention of this instrument.
Click Add a description (up to 60 words).How does a CT scanner work?
CT is mainly examined by the different absorption rates of X-rays by different tissues, in which the subject lies on a surface that moves slowly through the gantry while the X-ray source rotates in the structure to emit a narrow beam of X-rays on a part of the subject's body. Digital X-ray detectors are used in CT scanners, just opposite the X-ray source. The detector picks up the X-rays as it leaves the subject. Many images taken at different angles are collected in one complete rotation process and these images are transmitted to a computer. For each rotation, the CT computer reconstructs the collected image data into one or more cross-sectional images of the internal organs or tissues using complex mathematical formulas.
Advantages and disadvantages of CT scanning
Of course, its advantage is that it is sensitive to bone because it is X-ray.
Therefore, for some cranial lesions, we must do CT examination.
Of course, its disadvantage is that the resolution for soft tissues is not so high.
Especially when applying it to pregnant women, children, newborns, and young children, you should be cautious.
Minimize unnecessary radiation when doing the test.