GE Healthcare Discovery CT750 HD - Manual (Page 32)

Enhancing image quality with monochromatic spectral image
Exclusive to the Discovery CT750 HD, the spectral image is created as though
it comes from a single energy (keV) source. Individual spectral images can
be derived from 101 user-selectable energy levels. This approach enables
image contrast optimization, accurate CT numbers and up to a 50% reduction
in common beam hardening artifacts — features that together aid in a fast,
confident diagnosis.
Utilizing lower energy spectral images allows for better contrast differen-
tiation, thereby accentuating subtle contrast differences.
In the study below, due to the patient’s impaired renal function only 60cc
of contrast was utilized. With GSI’s capability to review different levels of
monochromatic energy levels for better iodine conspicuity, the endoleak
was visualized.
VR images VR images demonstrating
thrombus
Conventional CT 93 keV Spectral image 93 keV VR Spectral image
Curved view demonstrating
endoleak visualization
Beam hardening reduction
Reducing visually obstructive beam hardening artifacts will reveal impor-
tant underlying anatomical information for a complete diagnosis.
32 GE Healthcare Discovery CT750 HD