GE Healthcare StentViz Brochure

GE Healthcare

StentViz

Enhanced Stent Visualization

Dr. Morice, Dr. Lefèvre,
Dr. Hovasse, Dr. Chevalier,
Dr. Louvard
Institut Cardiovasculaire
Paris Sud, Massy, France

Assessing the deployment of stents during
angioplasty procedures is critical for minimizing
the risk of future adverse events.

But accurately assessing stent deployment,
or gauging stent placement in relation to
existing stents, can be highly challenging
with conventional fluoroscopic imaging.

Latest stent designs, low metal content,
bio-degradable materials, steep angulations
and fast stent motion can all obscure stent
visibility.

Innova
stent visualization, with easy, one-button
activation.

StentViz potentially helps you to:

• Enhance stent visibility and visualization

• Position stents more precisely with respect

• Accurately evaluate stent overlap in cases

• Increase clinical confidence with immediate

• Save time and money by choosing the right

®

with StentViz provides exceptional

to assess stent deployment.

to existing stents.

of in-stent restenosis, long lesions or
bifurcation stenting.

and routine control of stent deployment.

stenting strategy to avoid additional
procedures and patient re-treatment.

StentViz t

Fully automated processing

A visualization tool for easily assessing stent positioning
and deployment, StentViz is a perfect fit within your cathlab
workflow. It automatically improves the image quality of
stents from cine X-ray acquisitions.

Unlike other technologies, StentViz detects automatically
both the guidewire and the marker balls to perform an elastic
registration that allows to compensate for non rigid stent
deformation.

In addition, StentViz detects and removes radio-opaque
objects for optimal stent visibility and robust performance.

Markers & guide

wire detection

Automatic detection

on each image

Elastic

registration

Compensate

for non rigid motion

Temporal

integration

Cumulate information

into a single image

Zoom & contrast

optimization

Subtract background

and enhance stent

technology

Elastic registration technique One touch activation

Stent enhancement techniques are based on motion
compensated temporal integration of the stent images.
The motion of the stent is classically inferred from
the motion of the highly contrasted balloon marker balls.

StentViz detects and tracks the guide-wire between the
markers and uses it to predict the deformation of the stent.
The elastic curve-based registration technique accounts better
for the guide-wire and stent deformation, thus avoiding
potential blurring linked to rigid registration.

Step A - Acquisition of several images of the same stent

Fast and easy to use, StentViz is fully automated to fit into
your interventional workflow. From a cine X-ray acquisition
an enhanced StentViz image is instantly generated at the
press of a button.

• A cardiac record run with approximately 30 frames is
acquired with the balloon and marker balls in place.

• Press the StentViz key in the exam room or in control room.

• The enhanced StentViz image appears within thirty seconds.

• If the enhanced stent image is non-optimal, you can
choose a frame and zoom to re-launch the processing.

• StentViz image is stored as a DICOM image for review
and archiving.

Image M Image N Image O

Step B - Registration of all stent images

StentViz
Elastic registration

Optimal registration:
based on marker balls
and the guide wire
(GE patent application).

Other technologies
Marker based
registration

Suboptimal registration:
based on marker only.