What is dual energy CT?

What is dual energy CT?

A dual energy CT scanner is fairly new technology that uses both the normal X-ray and also a second less powerful X-ray to make the images. This gives dual energy CT additional advantages over standard CT for a wide range of tests and procedures (see benefits of dual energy CT below).

Why CT is dual energy?

Dual-energy CT may improve vascular imaging by increasing the attenuation of vessels at lower energies, providing improved characterization of heavily calcified vessels with the use of subtraction techniques, and by decreasing the radiation dose by eliminating the need for true unenhanced images.

What is dual-source CT scanner?

A dual-source CT scan uses two x-ray sources at right angles to each other. This doubles the speed of the test so you receive less radiation, and it also creates sharper images. A dual-source CT scan can be used to guide a surgeon to the right area, to identify tumors, or to study blood vessels.

When was dual energy CT introduced?

In this regard, dual-energy CT, introduced as a first-generation dual-source CT system in 2006, can improve material differentiation by using two different X-ray energy spectra (2).

What is dual phase CT?

What is Dual Phase CT Abdomen? Dual Phase CT Abdomen creates cross-sectional images at different optimal scanning times for the liver and pancreas. These images provide detailed information of the abdomen. It provides more detailed information as compared to X-ray.

Is dual source CT the same as dual energy CT?

Dual-source CT refers to the use of two x-ray sources and two x-ray detectors mounted on a single CT gantry and can be used in either a dual-energy or single-energy mode.

What is dual source?

Dual sourcing is the supply chain management practice of using two suppliers for a given component, raw material, product or service. Companies use this approach to lower the risk of relying on a single supplier, a practice called single sourcing. Sole sourcing, in contrast, means only one source is available.

What is dual source energy meter?

Prepaid Dual source Meter Is specially designed for 3-Phase energy measurment applications where dual AC sources are available . It measures and stores Active Energy of utility source as well as alternate DG source. It also provide the facility to trip user load in event user exceeds KW set point or current set point .

What is a CT triple phase?

Triple-phase CT (including an arterial phase, a portal venous phase, and a late washout phase) has been found to be highly accurate in the diagnosis and characterization of HCCs but, like US, may miss smaller lesions. Pooled estimates reveal a sensitivity of 68% and a specificity of 93%.

Why dual sourcing is important?

Dual sourcing prevents supply monopolies that keep prices higher. Having more than one supplier ensures that no single vendor can have too much leverage in your purchasing relationship. Sourcing more than one company drives competition.

What is a dual meter?

If you get cheaper electricity at certain times, you might have a two rate (or ‘dual-rate’) meter. This means it will have 2 rows of numbers. The top row (labelled ‘low’ or ‘night’) shows how many units of cheaper electricity you’ve used. Ignore any numbers shown in red.

Is there such a thing as dual energy CT?

There are numerous clinical applications of DECT that are easily accessible with specific postprocessing algorithms. The term “dual-energy CT,” or “DECT,” refers to CT that uses two photon spectra; therefore, DECT is sometimes also referred to as “spectral CT.”

How is mass density measured in dual energy CT?

In dual-energy CT, an additional attenuation measurement is obtained with a second x-ray spectrum (ie, a second “energy”), allowing the differentiation of multiple mate- rials. Alternatively, this allows quantification of the mass density of two or three materials in a mixture with known elemental composition. Recent advances in the use of

How does dual energy radiation exposure ( DECT ) work?

Technical Approaches Radiation Exposure Postprocessing Summary References CITING ARTICLES OBJECTIVE. In dual-energy CT (DECT), two CT datasets are acquired with different x-ray spectra. These spectra are generated using different tube potentials, partially also with additional filtration at 140 kVp.

Which is the bread and butter of dual energy CT?

The different photoelectric energies and K-edges are the bread and butter of dual-energy CT.