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Chapter 8 Technical specifications
8.1 Unit technical specifications
8.1.1 General information
z X-ray beam: Fan Beam
z Reconstruction Algorithm: A real time reconstructing algorithm
z Dynamic Range: 14 bit
z Scan Time (sec) at normal: 9.7 sec (typical). (2~13.5 sec.)
z Rotating Unit Scan Angle (degree): 240
Actual rotating angle around the object
z X-ray Exposure Angle (degree): 220
Actual spanning angle to expose the object to X-Ray: In fact the instant that the rotating
unit turns by 10 degrees, the X-Ray exposure starts and stops at 10 degrees before the
rotating unit reaches the full rotation: 240-10-10=220
z Patient Position: Standing. Wheel chair-confined patients
z Patient Alignment: 3 guiding light beams
z Reconstruction Time: About 45sec
z Focal spot size: 0.35 X0.5 mm
z FDD (SID): 531.2 mm
z Magnification: 1.31
z Sensor type: CMOS (Area mode)
z Pixel pitch: 100um
z Image pixel size: 100um
z Active pixel array: 1504x60 pixels
z Active area: 150.4x6.0mm
z Data acquisition speed: 100Mbps: Ethernet communication
z Weight: 75 kg
Exposure angle
Rotating unit spanning angle
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