1.Gantry System
Aperture: 72 cm
Scan Field: 50 cm
Tilt: ± 30°
Rotation Time: 0.5s、0.6s、0.75s、1.0s、1.5s、2.0s
Partial Scan Times (240°): 0.33s,0.4s, 0.5s, 0.67s,
1.0s, 1.33s
Focus to iso-center : 570mm
Focus to detector Distance: 1040mm
2.Data acquisition system
Max. number of Slices/Rotation:
16 Slices/Rotation
Number of Detector Rows: 32 Rows
Number of Projections: 4640
Sequence Acquisition Modes:
16x0.625, 16x1.25, 8x0.625,2x0.625
Spiral Acquisition Modes:
16x0.625, 16x1.25, 8x0.625
Detector: Up to 30% SNR improvement
compared to conventional CT detectors;
Down to 1us~2us decay time for sub
second scan application;
Ultra low afterglow;
Special design to minimize electronic noise;
High geometric efficiency.
3.X-ray tube & Generator
Tube Current Range: 10mA～420mA
Tube Voltage: 80kV、100kV 、120kV、140kV
Tube Anode Heat Storage Capacity: 5.3MHU
Cooling Rate: 815kHU/min
Focal Spot Size: 0.5×1.3（Small） 1.0×1.3（Large）
Max. Power: 50kW
4.Patient Table
Max. table Load: 205kg/452 lbs
300kg/661Ibs (Option)
Table Feed Speed: 1mm/s-160mm/s
Vertical Table/Travel Range: 430mm-970mm Vertical
Travel Speed: 9 mm/s-15mm/s Movement Range:
1770mm
Pitch: 0.3-2.0
5. Host Computer systems
Monitor: 19 intch, 1280 x 1024 resolution; BigTide
HL1916S AUO
Host: Dell T3630
CPU: Intel Core i5-8500 Processor (6 Core, 3.0GHz, 9MB
Cache, Integrated graphics: HD 630)
RAM: 16GB (2 x 8GB, 2666MHz, DDR4, UDIMM)
System Disk: 1TB, 3.5 inch SATA3.0 Disk (7,200 rpm)
Data Disk: 1TB, 3.5 inch SATA3.0 Disk (7,200 rpm)
Recon: Dell T5820
CPU: Intel Xeon W-2123 Processor (6 Core, 3.6GHz)
RAM: 32GB (4 x 8GB, 2666MHz, DDR4, RDIMM)
GPU: GTX1050
System Disk: 500GB, 3.5 inch SATA3.0 Disk (7,200 rpm)
Data Disk: 2TB, 3.5 inch SATA3.0 Disk (7,200 rpm)
Additional Storage: CD-R 700 MB 1,100 Images DVD
DICOM Drive 4.7 GB DVD Media 8,400 Images Write-RW/
+RW/-DL/Read
DICOM Viewer: Included on each CD; Automatically
started on the viewerʼs PC
6. AVW workplace systems*
AVW workplace provides the unique advantage
of an efficient multi-moda lity diagnostic workflow
at a single workplace.It manages the clinical diagnostic
workflow anywhere within the clinical environment.
High-Performance Computer
Standard Monitor: Flat Screen Monitor 19”
RAM Storage: >=16GB
Image Storage: >=700GB;
1,400,000 Uncompressed Images
Additional Storage:
CD-R 700 MB 1,100 Images
DVD DICOM Drive 4.7 GB
DVD Media 8,400 Images
Write-RW/+RW/-DL/Read
DICOM Viewer:Included on each CD;
Automatically started on the viewerʼs PC
7. System Performance
Patient Registration:
Direct input of patient information;
Acquisition workspace immediately prior to scan;
Pre-registration of patients at any time prior to scan;
Special emergency patient registration (allows
examination without entering patient data
before scanning);
Transfer patient information from HIS/RIS via DICOM
Worklist;
Transfer examination information from scanner into
HIS/RIS via MPPS (Modality Performed Procedure Step)
Surview
Length: 50‒1650mm
Scan Times: 1.5‒18 s
Views: A.P., Lateral, Dual
Real-Time Topogram: Yes
Sequence Acquisition
Reconstructed Slice Widths: 0.625, 1.25, 2.5, 5, 10mm
Dynamic Multi-Scan:
Multiple (continuous) sequence scanning without
table movement for fast dynamic contrast
studies with maximum slice thickness of 20mm
Multi-slice Spiral Acquisition
Reconstructed Slice Widths:
0.625, 0.8, 1, 1.25, 1.5, 2, 2.5, 3, 4, 5, 6, 7, 8, 9, 10mm
Slice Increment: 0.1‒20 mm
Spiral Scan Time: Max. 100 s
Scan Length: Max. 1700mm
8.Image reconstruction
Real-Time Display:
Real-time image display during spiral acquisition.
Scan Field: 50 cm
Recon Field: 5‒50 cm
Recon Time: Up to 20 images/s with full
cone beam reconstruction
Recon Matrix: 512x512, 768x768,1024x1024
HU Scale: ‒32,768 to +32,767
9.CINE Display
Display of Image Sequences
Automatic or Interactive with Mouse Control
Max. Image Rate: 30 frames/s
10.Filming
Connection via DICOM Basic Print
Interactive Virtual film Sheet
11.Image transfer/Networking
Interface for transfer of medical images and information using
the DICOM standard.
Facilities communication with devices from different
manufacturers.
.
DICOM Storage (Send/Receive)
DICOM Query/Retrieve
DICOM Basic print
DICOM Get Worklist (HIS/RIS)
DICOM MPPS
DICOM Storage Commitment
DICOM Viewer on CD
12. Image Quality
Low-contrast Resolution
Low-contrast resolution is the ability to see
-a small object(mm)
-with a certain contrast difference(HU)
-on a particular phantom
-at a certain mAs value(mAs)
-with a particular patient dose (mGy)
Spiral
Phantom: Catphan 600
Object size: 4mm
Contrast difference: 3HU
Dose(CTDIw): 19.8mGy
Technique: 10mm, 120kv
Sequence
Phantom: Catphan 600
Object size: 4mm
Contrast difference: 3HU
Dose(CTDIw): 19.8mGy
Technique: 10mm, 120kv
High-contrast resolution
Isotropic high-contrast resolution in all three planes(x,
y, and z)
X-Y-plane:
0% MTF 17lp/cm, 0.29mm
10% MTF 11lp/cm, 0.45mm
50% MTF 7.5lp/cm, 0.66mm
Z-plane
0% MTF 15lp/cm, 0.33mm
10% MTF 10lp/cm, 0.5mm
50% MTF 6.0lp/cm, 0.83mm
Technique: 245mA, 120kv, 1.0s, 0.625mm
Noise: <=0.35%
