GE Healthcare Optima CT540 - Manual (Page 6)

Conventional CT image recontruction
techniques are simple and fast, but
have limitations, as they are sensitive
to noise and artifacts. ASiR extracts noise by modelling its
root causes for each patient and
application type.
Conventional CT
Reconstruction
Raw data
Iteration 1
Final image
ASiR: iterative reconstruction
that extracts noise by photon
statistics and object noise modelling
Photon statistics and
object noise modelling
ASiR inside.
A leap ahead in dose management
ASiR may help clinicians achieve dose reductions
while delivering the diagnostic image quality
needed for confi dent diagnosis. It may also
improve low contrast detectability***.
ASiR changes the dose paradigm across many
anatomies and patients. Based on customers’
experiences using ASiR technology, excellent
diagnostic image quality at low dose has been
demonstrated across exam types and body
regions.
DoseWatch.
Know where you stand.
GE Healthcare’s DoseWatch dose management
solution can be the cornerstone of a
comprehensive, proactive radiation management
program. Capturing dose data from multiple
imaging modalities and manufacturers’ systems,
DoseWatch gives you insightful, actionable
information with confi gurable alerts.
Helping you to achieve
your lower dose needs