What is MDCT imaging?
What is MDCT imaging?
Multidetector computed tomography (MDCT) is a form of CT technology used for diagnostic imaging (Fig. 4.5). In this MDCT approach, a two-dimensional (2D) array of detector elements replaces the linear array of detector elements used in the typical conventional and helical CT scanners.
Is HRCT scan harmful?
Radiation dose associated with HRCT of chest is much higher than a routine chest scan. Even with reduced radiation dose scanning technique, the radiation dose of HRCT can exceed the radiation dose of a chest radiography by 100 times (29).
Is HRCT and CT scan same?
Compared to helical CT, HRCT uses a narrow beam collimation to take thin slice images of the lung parenchyma. This protocol produces extremely high definition images of lung alveoli, airways, interstitium, and pulmonary vasculature. Expiration images may assist in identifying air-trapping in patients with lung disease.
When do you do a spiral CT?
A low-dose spiral CT scan is a type of medical test. It is used to look for early signs of lung cancer. If the test finds cancer, treatment can start early. But the test is not helpful for light smokers or people who quit smoking more than 15 years ago.
Can HRCT detect heart disease?
The test may diagnose or detect: Plaque buildup in the coronary arteries to determine your risk for heart disease. Congenital heart disease (heart problems that are present at birth) Problems with the heart valves.
What are side effects of HRCT chest?
Your healthcare provider will watch for any side effects or reactions to the contrast dye. These include itching, swelling, rash, or trouble breathing. Tell your healthcare provider if you have any pain, redness, or swelling at the IV site after you get back home.
When is HRCT used?
HRCT of the lungs can be applied to the diagnosis of both acute and more chronic diffuse diseases of the lung tissue and the airways. The best-known indications for HRCT include idiopathic interstitial pneumonias, such as idiopathic pulmonary fibrosis.
What is an advantage of spiral CT?
The most important advantages of helical CT over conventional CT are (1) the shorter examination time, which decreases image degradation from motion artifact, even in infants and young children; (2) the capability for retrospective image reconstruction, which decreases image degradation from volume averaging; and (3) …