MULTISLICE... FOR EVERYONE

HiSpeed CT/e Dual

HiSpeed CTMultislice... for

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T/e DualEveryone

Multi-slice technology is becoming the universal CT scanningtechnology.From experience gained in the development of matrix anddual detector CT systems, GE Medical Systems now providesyou access to the many advantages of this new technology:greater speed, better resolution and extended coverage. Designed through Six Sigma quality methodology, CT/e Dualbenefits from General Electric's latest innovations, and allowsyou to increase productivity, optimize patient flows and aboveall allows access to a large number of advanced clinical appli-cations. CT/e Dual therefore offers to everyone unrivaledmulti-functionality, image quality and reliability.

The strength of multi-slice technology By acquiring twice the quantity of data in

a single rotation, CT/e Dual allows you to work faster with the same image qualityas a single-slice system, and obtain better resolution without any increase in acquisition time.

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With a single-slice CT scanner, increasing the pitch leads toa modification of image quality. With CT/e Dual, everythingis different! Thanks to its dual detector and its patentedreconstruction algorithms, GE Medical Systems has beenable to determine the "ideal" pitch depending on whether the priority is resolution or speed.

High Qualitymode

0,75

High Speedmode

1,5

Table movementCollimation

� Multi-slice� Single-slice

Imag

e Qu

ality

HiSpeed CUltimate technol

HiLight detector: The reference in solid-state detectorsGE Medical Systems' supremacy in the field of solid-state detectorsis acknowledged throughout the world: its HiLight detector alreadyprovides superior image quality with notable dose reduction.This is due to an exceptional absorption factor (99% at 120 kVp)and an outstanding scintillation efficiency. In 1998, GE MedicalSystems innovation led to the launch of the matrix-based detector.CT/e Dual combines performance and complete mastery of multi-slice technology.

BeamTracking: improved image qualityand dose reductionBeamTracking is a unique feature from GEMedical Systems that guarantees real-timefocus stability. A dynamic collimator perma-nently checks the centering of the X-ray

beam on the detectorthanks to data transmittedin real time by the detectoritself. Collimation is thusperfectly adjusted to slicethickness, post-patient collimation is unneces-sary, and the dose isreduced.

CT/e Dual benefits from GeneralElectric's very latest technical innovationsand its proven experience. The result:perfectly consistent technological choicesthroughout the imaging chain.While most of these technologies havebeen developed with the aim of obtainingexceptional image quality, they allcontribute significantly to the reductionin dose to the patient.

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Real-time control of the collimator thanks to data measured bythe detector.

Low DoseTechnol

Beam movement linked, for example,

to thermodynamicexpansion of

the anode.

T/eDualogy

AAR/ANR: exclusive algorithms to reduce artefactsAAR (Advanced Artefact Reduction) enables linear artefactsto be reduced at shoulder and pelvis level, and also reducesartefacts caused by the presence of metallic objects. Evenimmobilized patients can be examined with their arms in thefield of view. ANR (Advanced Noise Reduction) is a reconstruction algorithm providing selective filtering of noise present in the image without any decrease in spatial resolution.

Bowtie Filter: further dose reductionBowtie filter attenuates off-axis rays in order to maintain a more uniform X-ray field at the detectorwhatever the position of the beam through thepatient. The bowtie filter minimizes surface dose by up to 50% and reduces X-ray scattering effects.

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Greater attenuationof off-axis

rays with thebowtie filter

90 deg

AutomA: optimal image quality The absorption coefficient of X-rays varies for different tissues; a constant tube current may be too high or too low. AutomA adapts current to the absorption coefficient for each slice. Signal/Noise ratio increases and the dose is reduced.

A single scout view providesattenuation profiles for each rotation and allows the necessary current to be calculated. Required mA isautomatically applied to theZ-axis for each rotation.

logy

Constant image quality

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HiSpeed CErgonomic and user-frien

Patient identification

and choice of protocols...

among the 300 pre-programmed,customizable protocols.

Display of accumulatedreceived during examin

Innovative, intuitive and user-friendly,the CT/e Dual interface enables acquisition in just a few mouse clicks.Users can customize the system andhave their own parameters set up foreach new session.

Reconstruction is immediateand entirely automatic. Using a DICOM-compatible open system, CT/e Dual makes alltransfer, printing and archivingprocedures simple.

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T/eDualdly: 3 clicks for an acquisition

Patient positioning

Scout

view

Customization

of protocol and acquisition

Anatomical references

Anatomical coverage

Selection of AP or lateral

scout view

doseation

Adjustment of acquisition timing

Modifiable reconstructionparameters

Modifiable acquisition parameters

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Interactive modification of slice positions, coverage, centering and size of image display

HiSpeed CFlexibility of solutions

CT/e Dual offers enormous flexibility in acquisition and post-processing and,with its many options, provides access tospecific applications such as CT angio,perfusion, liver multiphase, vessel assessment, joint studies...The power and speed of multi-slice technology give access to a wide rangeof clinical applications illustrated in this image gallery.

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C T P E R F U S I O N

V E S S E L A N A LY S I S

S U B M I L L I M E T R I C

S M A R T P R E P

A S Y M M E T R I C

CT/eDual

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3 D S U R FA C E

N AV I G AT O R

D E N TA S C A N

A wide range of clinica

High resolution posterior fossa obtained by fused image technique (axial mode: 1 image 2x2 mm).

Mid brain axial images demonstrate excellent low-contrastdepiction of cerebral parenchyma.

Lumbar spine acquired in helicalmode with 2 mm slicethickness;multipleoblique views aredefined from a sagittal view.

From helical acquisition with 1 mm slice thickness, post-processing MPR shows detailed anatomy of paranasal sinuses.

The standard algorithm is uacquisitions for 3D displaysreformat imaging.

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HiSpeed Cl applications

Following thin slice acquisition, interactive MPVR allows thepancreas to be studied from different angles.

The speed of the CT scan allows bi-phasicacquisition during the arterial contrast enhance-ment time for detection and characterization ofhepatic lesions (arterial and portal comparison).Dose optimization is adapted to patient morpho-logy, and timing between phases can be selec-ted on the basis of liver anatomy.

used prospectively on helical s and the bone algorithm for

Cervical spine is studied in axial mode (gantry tilt is adjustedaccording to the spine level) or in helical mode.Analysis of discal hernia using sagittal or oblique viewsobtained by helical acquisition of 1 mm slice thickness.

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CT/eDual

Advanced Artefact Reduction algorithm (AAR) reduces the beam-hardening artefact for study of thelung apex and mediastinum.

Axial thin slices acquired with the cluster mode allow controllingof the patient breath hold. Helical acquisition is performedwith dedicated chest algorithm. AutomA optimizes the doseduring the entire acquisition of the chest.

Rapidly acquired thin slices for carotid imaging during artericontrast enhancement. Using MIP mode with thicker slice thinternal and external carotids can be displayed. The SmartPrepoption facilitates choice of the best moment to start acquisitio

Interactive use of MPR mode following thin slice helicalacquisition.

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ialhepon.

Circle of Willis studied after helicalacquisition of 1 mmslice thickness. Theinteractive MPVRtool associated withMIP mode allowsdetailed representa-tion of cerebral artery anatomy.

From helicalacquisition aorta and renal arteriesare well depicted withVolume Rendering orwith MIP.

From helical acquisition any MPR images can be done insagittal, coronal or oblique views.

Fast acquisition of 3 mm slice thickness in helical modefor vascular imaging of the lowerlimbs during arterial contrastenhancement.

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HiSpeed CTA communicatin

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T/e Dualg system

iLinq : a new proactive and interactive communication tool In order to maximize productivity, iLinq allows youto access a whole range of advice and informationfrom the CT/e Dual operator console.

With iLinq it is possible:

• to have instant contactwith GE Online, to ask questions and get quick and qualified answers

• to display system statusand possible error messagesin real time

• to look up "Info &History", a tool whichrecords the solutions usedto solve any problem

• to access a data basecontaining information and advice specificto CT/e Dual.

e-FlexTrial: download, install and testthe latest applicationsPost-processing applications are even moreessential today as multi-slice CT scannersacquire more and more data.GE Medical Systems is constantly investingto develop its clinical applications.e-FlexTrial is the best way to be up to dateand to test the new CT applications beforepurchasing them.

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Data subject to change.Marketing Communications GE Medical Systems S.A.RCS Versailles B 315 013 359For more information on GE, Internet : http://www.gemedical.com

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