What is Mdct used for?
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.
What is the difference between CT and MDCT?
There are two main differences between conventional spiral CT and MDCT. Firstly, MDCT has a high acquisition speed (0.37 s rotation speed vs 1 s rotation speed for conventional CT); secondly, and probably more importantly, MDCT acquires volume data instead of individual slice data.
What is CT advantage?
CT scanning is painless, noninvasive, and accurate. A major advantage of CT is its ability to image bone, soft tissue, and blood vessels all at the same time. Unlike conventional x-rays, CT scanning provides very detailed images of many types of tissue as well as the lungs, bones, and blood vessels.
What are the advantages 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) …
When was Mdct invented?
MDCT TECHNICAL ADVANCES Seventh-generation multiple detector array CT scanners were introduced in 1992. They improve upon the third-generation geometry and sixth-generation helical scanning by using a wider portion of the x-ray fan beam during data acquisition.
Who introduced first multi row scanner?
The first scanner with more than one row of detectors and a widened z-axis x-ray beam was introduced by Elscint in 1992 (CT-Twin).
What are the advantages and disadvantages of CT?
In general, a CT scan has the advantage of short study time (15 to 20 minutes) with high quality images. However, disadvantages include the need for ra- diation exposure and the use of a contrast material (dye) in most cases, which may make it inappropriate for patients with significant kidney problems.
What are the disadvantages of CT scan?
Disadvantages of computerised tomography scanning
- Requires breath holding which some patients cannot manage.
- Artefact is common – eg, metal clips.
- Computerised tomography scans of the brain can be affected by bone nearby.
What is a spiral CT vs CT?
Abstract. 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.