Ge-healthcare Optima CT660 User Manual download pdf (Page 13)

ASiR

ASiR may help clinicians achieve dose reductions of up

to 40% while delivering the diagnostic image quality

needed for conﬁ dent diagnosis°. It may also improve low

contrast detectability+. ASiR, a projection-based iterative

reconstruction technology, changes the dose paradigm

across many anatomies and patients. Customers using

ASiR have demonstrated excellent diagnostic image

quality at low dose across exam types and body regions.

OptiDose*

Dose reduction with ASiR is combined with GE

Healthcare’s proven OptiDose technologies that deliver

dose reduction at the source. Optidose offers

SmartTrack* dynamic collimation that keeps the X-ray

beam tightly focused on the active detector cells and

Dynamic Z-Axis tracking, which blocks unused X-rays at

the beginning and end of a helical scan.

Dose check

Prior to starting the scan, dose check provides tools to

notify and alert the operator setting the scan parameters

whether the estimated dose index is above user-deﬁ ned

notiﬁ cation values. The dose check feature is designed to

comply with the NEMA XR-25-2010 standard.

ODM

In addition to the 3D and ECG mA modulation

†

features,

the Optima* CT660 introduces Organ Dose Modulation

(ODM)—providing reduction of radiation dose via X-ray

tube mA modulation for superﬁ cial tissues (such as

breasts and crystal lenses). Dose reduction at the body

surface is up to 40%, while the noise increase of the

superﬁ cial internal structures is less than 10%.

DOSE OPTIMISATION TECHNOLOGY.

Adaptive Enhance Level Adjustment (AELA) is a new

technology aimed to avoid potential trade-offs

between artifact and excellent visual spatial

resolution in reconstruction algorithms.

AELA

†

Giving you profound image clarity

Bone Plus AELA

†

at low dose

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Ge-healthcare Optima CT660 User Manual Page 13

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