Computed tomography (CT scan) is a medical imaging procedure that utilizes computer-processed X-rays to produce ‘slices’ of specific areas of the body. These cross-sectional images are used for diagnostic and therapeutic purposes in various medical disciplines.
Since its introduction in the 1970s, CT has become an important tool in medical imaging.
of the head
is typically used to detect infarction, tumors, calcifications, and hemorrhage and bone trauma.
can be used for detecting both acute and chronic changes in the lung parenchyma, that is, the internals of the lungs. It is particularly relevant here because normal two-dimensional X-rays do not show such defects. CT pulmonary angiogram (CTPA)
is a medical diagnostic test used to diagnose pulmonary embolism (PE). It employs computed tomography and an iodine based contrast agent to obtain an image of the pulmonary arteries.
is a sensitive method for diagnosis of abdominal diseases
. It is used frequently to determine stage of cancer and to follow progress. It is also a useful test to investigate acute abdominal pain.
An important issue within radiology today is how to reduce the radiation dose during CT examinations without compromising the image quality. Several methods that can reduce the exposure to ionizing radiation during a CT Scan