CLINICAL MEDICINE

Detailed explanation-1: -A CT scan of the bones may be used to look at your bones for damage, lesions, fractures, or other problems. A CT scan can also look at joints and soft tissues, such as cartilage, muscles, and tendons. It is helpful in staging cancer, too.

Detailed explanation-2: -CT images are two-dimensional pictures that represent three-dimensional physical objects. The images are made by converting electrical energy (moving electrons) into X-ray photons, passing the photons through an object, and then converting the measured photons back into electrons.

Detailed explanation-3: -Bones, calcifications, some tumors, and other dense matter appear white or light because they absorb the radiation. Less dense soft tissues and breaks in bone let radiation pass through, making these parts look darker on the X-ray film.

Detailed explanation-4: -The typical CT image is composed of 512 rows, each of 512 pixels, i.e., a square matrix of 512 x 512 = 262, 144 pixels (one for each voxel). In the process of the image, the value of the attenuated coefficient for each voxel corresponding to these pixels needs to be calculated.