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Computed Tomography. Proviz 8. Multi-slice CT Scanner. 2003. CT-C3000Dual. Dual-slice CT Scanner. CT-C3000. 2002. 1999 2000. Spiral CT Scanner. CT-C2000. Whole body CT scanner. 1998. CT-C3000. CT Working Principle. Image display. X-ray generation. Data acquisition.

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Presentation Transcript
slide2

Proviz 8

Multi-slice CT Scanner

2003

CT-C3000Dual

Dual-slice CT Scanner

CT-C3000

2002

1999

2000

Spiral CT Scanner

CT-C2000

Whole body CT scanner

1998

slide4

CT Working Principle

Image display

X-ray generation

Data acquisition

Reconstruction and post-processing

slide5

Conventional Scanning

Scanning Interval

Scanning Interval

◎ Scanning speed is restricted because of non-continuous scanning.

slide6

Spiral Scanning

Spiral Scanning = Volume Scanning

slide7

Working Principle of Spiral CT Scanner

◎ Continuous rotation of X-ray tube and detectors

◎ Continuous emission of X-ray

◎ Continuous couch move-in at an even speed

◎ Continuous data acquisition

slide8

Advantage of Spiral Scanning

More easy to patient exam

Increase outpatient

Scanning speed is increased greatly

Reduce motion artifacts

Lower dosage of enhancement medium

Reduce mechanical faults

+

Reduce the missed diagnosis

Image post-processing making 3D visualization into reality

Volume scanning

slide9

◎ More easy to patient exam

Advantage of Spiral Scanning

Breath motion

Successful holding breath

Reduce breath and motion artifacts

slide10

◎ Increase outpatient

Advantage of Spiral Scanning

slide11

◎ Lower usage of enhancement medium

Advantage of Spiral Scanning

Artery phase

Portal vein phase

To acquire different phases images of viscera

slide12

◎ Thin slice scanning of large range

Advantage of Spiral Scanning

10mm scanning

3mm scanning

Nodular pathologic changes can be displayed clearly.

slide13

MPR

Advantage of Spiral Scanning

3D

slide14

Advantage of CT-C3000

◎ High speed

◎ Thin slice

◎ Strong capability of spiral scanning

◎ High quality images

◎ Rich functions of image processing

slide15
360°/sec.

High Speed

Clinical application:

◎ Volume scanning of ROI can be achieved with holding breath one time

◎ Reduce the missed diagnosis rate of small focus without interval data acquisition

◎ Reduce breath and motion artifacts

◎ Easy to acquire enhancement image

Advantage of CT-C3000

slide16

Thickness of 1mm

Thin slice

Clinical Application:

Advantage of CT-C3000

◎ Increase diagnosis rate of small focus

◎ reconstruction with high resolution

◎ The base of 2D and 3D reconstruction

slide17

Strong capability of spiral scanning

Continuous scanning of 80sec.

Basis

Advantage of CT-C3000

Top-grade configuration of CT-C3000

Key parts are imported from world leading manufactures.

slide18

X-ray Tube

Made by VARIAN Co. of U.S.A.

Metal tube

Dual focus

Advantage of CT-C3000

◎ Special designed for spiral CT of 1 and sub-second CT scanner

◎ Large heat storage capacity:3.5MHU

◎ High heat dispassion:750KHU/min.

slide19

Advantage of Metal Tube

Advantage of CT-C3000

slide20

Advantage of metal tube

◎ Large heat storage capacity, high heat dispassion and strong capability of spiral scanning

◎ Increase images quality and extend service life of tube with restraining electron radiation.

Advantage of CT-C3000

slide21

Advantage of metal tube

Advantage of CT-C3000

Large range continuous scanning can be achieved with 175mA and 80s.

slide22

Dual focus technique

Advantage of CT-C3000

slide23

Contrast the large focus with the small one

Large focus

Advantage of CT-C3000

Small focus

slide24

Heel effect of focus

◎ Focus of electron beam on the anode target is the same with heel on the floor.

◎ Sand blast will appear on anode target because of small focus.

◎ Image quality will be effected.

Advantage of CT-C3000

slide25

High voltage generator

Made by Spellman Co.

Apply high voltage and phase controlling technology

◎ Power:28KW

◎ Small volume and light weight

◎ Patent controlling technique

◎ Reduce noise effectively

◎ Reduce fluctuation of tube current and voltage

◎ Tube current and voltage can be controlled effectively and accurately.

Advantage of CT-C3000

slide26

Guarantee of high quality image

Advantage of CT-C3000

More……

Super high speed GOS detector

Slip ring and brush assembly made of silver plated copper

Strong computer system

Advanced system design

slide27

Guarantee of high quality image

Detector

◎ Made by Hamamatsu Co. of Japan

◎ Super high speed GOS solid detector

◎ Channel number:688

Advantage of CT-C3000

slide28

Super high speed GOS detector

◎ Stand for the most leading level of the world

◎ X-ray absorptivity:99.98%

◎ Response speed: 40% higher than that of other materials

◎ Extra-short afterglow effect

Advantage of CT-C3000

◎ Images acquired from high-speed and long-time spiral scanning are much better than that of other materials.

slide29

Guarantee of high quality image

Slip ring and brush assembly

Made by Litton Co.

Silver plated copper

Advantage of CT-C3000

◎ Signals are transmitted accurately in real time.

◎ High stability and wearability

◎ 2000000 times is guaranteed by Litton Co..

◎ Low cost maintenance

slide30

Guarantee of high quality image

Strong computer system

Open workstation with Pentium IV multi-CPU

◎ Multi-task can be processing in parallel mode.

◎ Image reconstruction with high speed

◎ Huge capacity of image storage

◎ Easy to upgrade and low cost of maintenance

Advantage of CT-C3000

1sec.

120000 images

slide31

Computer system

◎ Main frequency:2.0G

◎ Memory:512MB

◎ Hard disk:80GB

◎ Multi-medium of storage:1.3GB MO disk,external hard disk,CD-R

◎ Monitor:21″ real-flat high resolution color monitor

Advantage of CT-C3000

slide32

Rich functions of image processing

Software is the kernal of CT scanner

slide33

Rich functions of image processing

◎ Strong development capability of our company

◎ Multi-arithmetic application

◎ Comprehensive image post-processing

◎ High quality images

slide34

Magic of software

◎ BHC technology

◎ VAC technology

◎ MAC technology

◎ Adaptive steak artifacts reduction software

◎ High resolution scanning technology

◎ MAR software

◎ Lung enhancement software

◎ Advanced noise reduction software

slide35

Magic of software

Before( 5mm)

After

slide37

Magic of software

Lung enhancement

slide39

3D Technology

◎ MPR

◎ CMPR

◎ SSD

◎ VR

◎ VE

◎ MIP/MINP

◎ CTA

Magic of software

slide46

Human-friendly Design

Friendly operating interfaces

slide47

Clear operation steps

◎ Presetting protocols

◎ Scanning can be completed automatically.

Human-friendly Design

slide48

Comfortable

◎ 70cm gantry aperture

◎ 25°gantry tilt

◎ Load capacity of couch is 200Kg

◎ Clear voice prompt

Equipped with remote controlling

Human-friendly Design

slide50

Scanning speed doubled

Advantage of Dual-slice CT scanner

2 images can be acquired in 360°/Sec.

slide51

High speed scanning

◎ Easy to patient exam, reduce breath and motion artifacts

Advantage of Dual-slice CT scanner

slide52

Breath artifacts

Advantage of Dual-slice CT scanner

Successful holding breath

slide53

High speed scanning

◎ Multi-organ multi-phase images acquired accurately

20 cm

Advantage of Dual-slice CT scanner

Three phase scanning of liver

Scanning range:20cm

Slice thickness:10mm

Dual-slice spiral scanning

Artery phase :10seconds

Spiral CT scanner

Artery phase:20seconds

Best continuous enhancement: about 10seconds

slide54

High speed scanning

Advantage of Dual-slice CT scanner

Artery

Portal vein phase

slide55

High speed scanning

◎ Lower dosage of enhancement medium

Advantage of Dual-slice CT scanner

Dual-slice CT: 10s,40ml

Spiral CT: 20s,60ml

slide56

High speed scanning

◎ Reduce exam time

Advantage of Dual-slice CT scanner

slide57

Image quality has been increased greatly

◎ Large rang continuous thin thickness scanning as regular scanning

Advantage of Dual-slice CT scanner

slide58

◎ Increase the detectable rate of small pathological changes

Advantage of Dual-slice CT scanner

10mm scanning

2mm scanning

Small nodus focus of lung

slide59

◎ High quality images of coronal and median MPR

Advantage of Dual-slice CT scanner

Spiral CT:5mm MPR

slide60

Advantage of Dual-slice CT scanner

Dual-slice CT:1mm MPR

slide61

◎ Large range MRA can be acquired perfectly.

Advantage of Dual-slice CT scanner

  • Spiral CT: 5mm
  • Dual-slice CT: 2mm
slide62

◎ 3D image quality has been increase greatly.

Advantage of Dual-slice CT scanner

slide63

Reduce running cost

Reduce scanning time

Increase X-ray efficiency

→Reduce exposure time→Reduce tube loading

Advantage of Dual-slice CT scanner

◎ prolong use life of X-ray tube

slide64

◎ Large heat capacity metal tube of 4MHU supplied by VARIAN

◎ Special high voltage generator of 28kW supplied by SPELLMAN

◎ Super high speed GOS detectors with 10mm dual-slice

◎ Slip ring and brush assembly with 2000000 times guaranteed

CT-C3000Dual

slide65

◎ Two images acquired in 1sec./360°

◎ Spiral scanning with continuous 80sec.

◎ Min. Thickness: 1mm

◎ Image reconstruction time:0.8sec.

CT-C3000Dual