Which of the following types is used by computed tomography employed for visualisation of the internal structure of human body?

Correct Option

Computed Tomography (CT), also known as Computerized Axial Tomography (CAT scan), is a medical imaging technique that employs X-rays to generate detailed cross-sectional images of the human body. An X-ray source rotates around the patient, and the collected data is processed by a computer to construct three-dimensional images of internal organs, bones, soft tissues, and blood vessels. Its applications include detecting tumors, evaluating trauma injuries, and assisting in surgical planning.

Incorrect Options

Sound waves are utilized in ultrasound imaging, which produces images by reflecting high-frequency sound waves off body structures, not in CT scans.

Magnetic resonance refers to Magnetic Resonance Imaging (MRI), a technique that uses strong magnetic fields and radio waves to create detailed images of organs and soft tissues, distinct from CT technology.

Radio isotopes are employed in nuclear medicine imaging techniques such as Positron Emission Tomography (PET) scans, where radioactive tracers are introduced into the body to visualize metabolic activity or blood flow, which is different from the X-ray based mechanism of CT.