GE Healthcare Discovery CT750 HD - Manual (Page 41)

Blood flow
Mean transit time
Blood volume
Tissue classification
T Max
1. Up to 120mm for brain perfusion.
Volume helical Shuttle —
further extending the range
The Discovery CT750 HD introduces an innovative
approach to further extend coverage for studies such
as 4D CTA and large internal organ physiological
assessments. Volume Helical Shuttle is a continuous
bi-directional scan mode that extends z-coverage and
improves temporal sampling. GE’s unique Dynamic
Pitch reconstruction method utilizes acquired scan data
during table acceleration and deceleration rather than
only during constant table speed. The result is more
than 300mm of high-resolution volume coverage for
4D CTA studies.
Volume Helical Shuttle may enable anatomical assess-
ment that surpasses the coverage of today’s widest
detectors and enables you to set the coverage to exactly
the range you need. For example you can perform a
4D CTA study to characterize the inflow and outflow of
contrast in the arterial and venous system over a length
of 312.5mm, equivalent to a 500-slice image. In addition,
Volume Helical Shuttle allows you to perform perfusion
1
studies for the brain and body organs.
three-series
scan
time-saving
results
On average, someone in the United
States has a stroke every 40 seconds.
2
Discovery CT750 HD’s ability to
acquire whole brain coverage
perfusion in addition to the other
stroke workup exams provides the
information physicians need to
make a diagnosis. Hospitals receive
a fixed payment for admitted
patients, so reducing the amount of
resources used translates directly
to cost saving for the hospital.
With GE’s Discovery CT750 HD, a
single three-series scan can provide
the results of a non-contrast CT, a
4D dynamic CT angiography, and
12 cm of whole brain perfusion
coverage at once. Discovery CT750
HD’s Volume Helical Shuttle (VHS)
with 12 cm of full coverage allows
for whole brain imaging, which can
potentially eliminate the need for
follow-up MR and reduce the cost
of a patient’s hospital stay.
3
1
2. Lloyd-Jones D et.al. Heart disease and
stroke statistics 2009 updated. A report
from the American Heart Association
statistics committee and stroke statistic
subcommittee. Circulation 2008
(ePub ahead of print); DOI: 10.1161/
CIRCULATIONAHA.108.191261.
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