4
•
SURE
Start
TM
:
– Continuous scan time: Max. 100 s
– Region of interest
(ROI):
Max. 3 ROIs
– CT number
measurement interval: 0.083 s (12 measurements/s)
– Scan start delay time: Min. 3 s
– Display function:
Mean CT number and elapsed
time
• Specification of
reconstruction position: By entering the couch-top posi-
tion or using the scanogram
• Reconstruction method: TCOT reconstruction (applicable
to 16-row acquisition data)
MUSCOT reconstruction (applic-
able to 4-row acquisition data)
• Reconstruction mode:
Full image
Half image
Detail image
• The relationships between the slice thickness and the
imaging area scanned in 7.5 s (0.75 s, 10 rotations) in
the longitudinal direction are shown for helical pitches
10 and 20.
*: The couch-top traveling distance per rotation is shown rela-
tive to the slice thickness.
Dynamic scan
• Scan time:
0.75, 1, 1.5 s/360°
• Programmable time:
Max. 1 hour
This refers to the maximum time
within which a series of scans is
performed following a predeter-
mined eXam Plan.
• Number of
programmable scans:
Max. 10
Max. time of one continuous
scan is 100 s.
• Scan plan
– Scan interval:
Min. interval is 1 s
Setting is possible in increments
of 0.1 s in a scan interval of
more than 1 s.
Note: When a scanning mode with patient couch movement is
used, the minimum scan interval is limited by the time
required for movement.
• Scan start delay time:
Min. 0.5 s
Setting is possible in increments
of 0.1 s.
• Scan rate:
Max. 133 scans/100 s
(0.75-s scan, 133 rotations)
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• Image reconstruction
– Number of images:
Max. 4 images/scan
– Image interval:
Reconstruction is possible in
increments of 0.1 s.
• Reconstruction time:
Min. 0.5 s
• Real-time reconstruction
time:
12 images/s (0.083 s/image)
(1 slice, 512
×
512 matrix)
X-ray generation
• X-ray exposure:
Continuous
• X-ray tube voltage:
80, 100, 120, and 135 kV
• X-ray tube current:
10 mA to 300 mA (260 mA for
135 kV) (in increments of 10 mA)
• X-ray tube heat capacity:4.0 MHU
• X-ray tube cooling rate: Max. 864 kHU/min
• Focal spot size
– IEC 60336: 1993
nominal :
0.9 mm
×
0.7 mm (small)
1.4 mm
×
1.4 mm (large)
X-ray detection
• Detection system:
Solid-state detectors
• Main detector:
800 channels
×
28 elements
• Data acquisition:
800 channels
×
16 rows
• Reference detector:
1 set
• View rate:
Max. 1,200 views/s
Data processing
• Reconstruction matrix:
512
×
512
• Picture element (pixel) size
– CT image:
Unit: mm
Scan field
SS
S
M
L
LL
Pixel size
* to
* to
* to
* to
* to
0.35
0.47
0.63
0.76
0.98
*: Depending on the Vari-Area or Zoom factor
– Scanogram:
Unit: mm
• Reconstruction filter functions
– Functions for the abdomen with BHC
– Functions for the abdomen without BHC
– Functions for the brain with BHC
– Functions for the brain without BHC
– Functions for the inner ear and bone
– Functions for the lung
– Functions for high-resolution mode
– Functions for super-resolution mode for the inner ear,
bone, and lung
– Functions for maintenance
Standard
Enlargement ratio (area)
4.00
2.00
1.0
0.50
LL
L
M
S
Pixel size
