Multi slice ct ppt
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Transcript of Multi slice ct ppt
MULTI-SLICE CT
Prepared by, Anand and Shonima
MULTI-SLICE AQUISITION
• 4 slice since 1999
(GE, Siemens, Philips, Toshiba)• 8 slice since 2001
(GE)• 16 slice since 2002
(GE, Siemens, Philips, Toshiba)
MAIN PARTS Generator• High voltage generator 60 kw out put
X-ray tube• Rotating anode tube• Very high heat capacity
Detector• Solid state detector
DIFFERENCE
LIMITATIONS OF SINGLE SLICE CT
• Speed performance• MPR low accuracy• image quality and artifacts• More intravenous contrast
ADVANTAGES
• Improved spatial resolution.• Motion artifacts reduced.• Patient breath hold is much less demanding.• Imaging larger z-axis volume in less time.• Less contrast medium required.• Improved accuracy in needle placement CT
fluoroscopy.
ARTIFACTS IN MULTI-SLICE SCANNING
• Motion artifact reduced by faster scanning.• Stair-step artifacts in 3D reconstruction
reduced by using thinner slices.• Partial volume artifacts reduced by using
thinner slices.
DETECTORS IN MULTI-SLICE
NEW CT TECHNOLOGY
MANUFACTURERS
TECHNICAL SPECIFICATION
DETECTOR DESIGN
Major impact areas for multi-slice ct
• The multi-slice technique has added new possibilities for faster, better and safer evaluation of many different disease
Stellar detector
• The stellar detector provide ultra-thin slices.
• very high spatial resolution
• It significantly reduces electronic noise for uncompromised diagnostic outcome at a low dose.
cost
videos
• https://www.youtube.com/watch?v=7aJKIq3MXa8
• https://www.youtube.com/watch?v=NicQmZxWeRo
THANK YOU