Table of Contents
What is the difference between CT and spiral CT?
Spiral computed tomography (SCT) differs from conventional CT (CCT) in that regions of the body can be rapidly imaged via continuous scanning. This is accompanied by simultaneous advancement of the patient, thus allowing volumetric data acquisition of up to 60 cm in less than a minute.
Are there different types of CT scanners?
CT Scan Arthrography. CT Scan Bones. CT Scan Brain/ CT Scan Head. CT Scan Chest (CT Scan Lung)
What is spiral CT?
A procedure that uses a computer linked to an x-ray machine to make a series of detailed pictures of areas inside the body. The x-ray machine scans the body in a spiral path. This allows more images to be made in a shorter time than with older CT methods.
Is spiral CT the same as helical?
The term “spiral” CT scanning, which is sometimes used synonymously with helical scanning, is actually a misnomer, because a spiral tapers out to a point, whereas the diameter of a helix remains constant.
What is the difference between helical and spiral CT?
9.1 Introduction Helical CT (also called spiral CT) was introduced commercially in the late 1980s and early 1990s. The difference in the naming convention between helical and spiral CT is due mainly to different CT manufacturers. For all practical and technical purposes, there is no difference between the two.
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) …
What is a slice in a CT scan?
The term slice refers to the number of rows of detectors in the z-axis of a CT. For example, in an 8-slice CT, there are eight slices of data captured for each rotation of the gantry. The first CT scanners offered single slice CT (SSCT) images but now there are multiple-slice CT scanners (MSCT.)
What is a helical CT?
Listen to pronunciation. (HEE-lih-kul kum-PYOO-ted toh-MAH-gruh-fee) A procedure that uses a computer linked to an x-ray machine to make a series of detailed pictures of areas inside the body. The x-ray machine scans the body in a spiral path.