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第 5 章 医学 CT 影像设备与应用 PowerPoint PPT Presentation


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第 5 章 医学 CT 影像设备与应用. 5.1 CT 影像设备简述 5.2 医学 CT 影像设备成像系统 5.3 螺旋 CT 5.4 多排螺旋 CT 5.5 CT 影像设备新技术进展与应用. 5.1 CT 影像设备简述. 5.1.1 CT 影像设备发展概况 5.1.2 CT 影像设备功能 5.1.3 CT 影像设备主要性能指标. 5.1.2 CT 影像设备功能. 1 . CT 成像的基本原理.

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第 5 章 医学 CT 影像设备与应用

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5 CT

5.1 CT

5.2 CT

5.3 CT

5.4 CT

5.5 CT


5.1 CT

5.1.1 CT

5.1.2 CT

5.1.3 CT


5.1.2 CT

1CT

CTXdigital matrix/D/ApixelCT


X

CRT

CT


5.1.2 CT

2CT

CT

X;

;


5.1.2 CT

X:

gantryXXXdata acquisition systemDAS70cm1230

CT


5.1.2 CT

X:

XCT

X12CT

X34CTX


5.1.2 CT

CT2X22550

2003SiemensStraton0.37,

Straton


CTDASX

detectorDASXXA/D


:

CTMRICTCT

CT

CT

CT


:

Array Processor,APCT

Philips 16MSCTAP

CPU 3.06GHz

Hard Disk 146GB


CTCRTCTworkstation

CTCT


5.1.3 CT

CT

CT


1X

MHUX

kHUX

TOSHIBAAquilion 16MSCTX7.5MHU1386KHU/minGE64LightSpeed VCTX8.0MHU,2100KHU/min


2

XX

GELightSpeed 16MSCT2491221888


3

CTX360XCT1s2s3s

GELightSpeed Plus 16CT0.5s

PhilipsBrilliance 16CT0.42s


3

CT,CT16MSCT112512512

7 7


3

CT

CTXXDASCT100


4CT

5

6

matrixCTmm= FOVmm /

CT256256320320CT51251210241024CT51251210241024CT


7

high contrast resolutionspatial resolutionCT

Lp/cmmmCT10 Lp/cmCT24 Lp/cm


8

low contrast resolutiondensity resolution%

CTXX1020CT

9

temporal resolutionCT


8

low contrast resolutiondensity resolution%

CTXX1020CT

9

temporal resolutionCT


10

CT

reconstruction and reformationCTCT


10

CTCTXCT=-w /wa w2.001.0aCT2000HU+1000HU-1000HuCT0CTXCTCT


10

CT2000CT200016200016CT200016=125HUCT125HU

window widthCT16

window levelCTCT35HU35HU100HU


10

CTCTCTCTCTCTCTCTCT


5.2 CT

5.2.1

5.2.2

5.2.3


5.2.1

CTdata acquisition systemDASA/DCTXA/D

detector


DAS

X-ray

1X


2CT

XX


2A/DDAS


5.2.2

3CTCTX

XXCTXDAS984=S

:3CTDAS4716752984RDCP


1DASA/D

2AP/IOPDAS

3AP

4ELH


5AP

6

7

8


5.2.3

CTimaging displayCRTCTworkstation


5.2.3

CTCT

CT


5.3 CT

5.3.1 CT

5.3.2 CT


1

CTCTXXX


X


CTCT


XX 120kV140kVCT


2CTCT

CTX3601


  • 5.3.1 CT

  • 1CT

  • pitchX1XCT


  • 1CT

  • CT

  • CT


2CT

CT

360180360CTCT1803602180360


3CT

CTCTCTCTCT

CTZCTCTCTCT


  • 4CT

  • CT

  • multi-planner reconstructionMPRCT

ACTBC


  • 3-dimensional reconstructionCT3D360

ASSDB


  • maximum intensity projectionMIPCT

AMIPB3D


4minimum intensity projectionMinIPCT

AMinIPB


  • shaded surface displaySSDCT

  • CTCT angiographyCTACT

ACTABCTACCTA


  • CTCT virtural endoscopyCTVECTCT

ACTVE BCTVE


  • CT

  • CT

  • CT

  • CTHRCT

  • CTCT

  • XCTCT

  • CTX


5.4.1CT

5.4.2CT

5.4.3 CT

5.4 CT


5.4.1 CT

MSCTCTCTCTCTXCT4XXXYZCT


  • 5.4.2 CT

  • MSCTCT481664MSCT16CT64CT20416CT

  • 4CTToshibaGESiemens/Philips1


ABC16MSCT


  • 16CT16CT0.5/0.625/0.75mm0.4S,20%,MSCT,64CTCTCT


5.5 CT

1CT

2

MSCTCT perfusionCT- time density curveTDC

CTABBVCPS


5.5 CT

3)

PET-CTCTPET


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