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what is dual energy ct imaging?
what is dual energy ct imaging?
In contrast to standard computed tomography scanners, Dual Energy CT scans produce image sets with two different X-ray spectra to characterize materials with precision while highlighting abnormalities in the body
The CT at RCH uses dual source dual energy
More information at: https://www.siemens-healthineers.com/en-au/computed-tomography/technologies-and-innovations/ct-dual-energy
uses of dual energy
uses of dual energy
what do we use it for at rch?
what do we use it for at rch?
Monoenergetic plus for metal removal
Monoenergetic plus for metal removal
Mainly used in high density metal reduction. Allows us to choose what keV we want to display in images (highkeV to reduce streak from metal). This can be more accurate than IMAR in some cases
Virtual non-contrast
Virtual non-contrast
Removes all contrast from scan
Can be used to reduce phases acquired on CT.
eg: When patient requires KUB and PV abdomen we can perform PV abdomen under dual energy and then perform a virtual non-contrast image to evaluate stones
characterisation of kidney stones
characterisation of kidney stones
Can characterise materials in kidney stones allowign for identification of calcium, uric acid etc
lung perfusion
lung perfusion
Can be useful in CTPA's. Allows us to see small PE's that are reducing blood flow (perfusion) to lung tissue
disadvantages of dual energy
disadvantages of dual energy
Slower scan times and potential for higher dose: Cannot use Flash mode at the same time (both tubes are being used for different kV)
Useful videos on dual energy imaging and post processing;
https://pep.siemens-info.com/en-us/pediatric-ct-imaging-pediatric-dual-energy-ct-webcast
https://pep.siemens-info.com/en-us/syngo-via-ct-dual-energy-application-classes
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