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Hyper resolution four-head gamma camera

for dedicated SPECT/PET
 

for brain, newborn babies and small animal imaging with multiplied patient throughput

  • 240 PMT (HR model)
  • 18FDG/PET imaging (optional)
  • maintenance-free mechanical gantry
  • 4 pcs PET-based full digital SFOV detectors
  • multi segment continuous acquisition (optional)
  • intrinsic spatial resolution FWHM <= 2.3 mm (HR model)
  • FOV: 230x215mm
  • Energy range: 40-200 keV (40-600 keV with coincidence package)
  • Intrinsic energy resolution for 99mTc: 9.7%

More heads - better and faster imaging

The Nucline four-head SFOV gamma camera is a unique tool in neurology, paediatrics and research. It is dedicated for brain SPECT, newborn babies and small animal imaging. The system is designed to enhance the diagnostic confidence.

Coincidence (PET) detection offered as an option.

More patients within less time. The image acquisition time is half of that of a dual head SPECT system.

High resolution imaging. Using low energy ultra high resolution collimators the special detectors result in excellent system resolution in the low gamma energy region. 

Detectors
Four rectangular high stability detectors assembled with high optical and mechanical quality
  • NaI(Tl) scintillation crystal
    • Size: 260x246 mm
    • Thickness: 6.4 mm, 15.9 mm or 25 mm pixelated
  • Photomultipliers:
    • 33 pcs of high quantum efficiency PMTs/detector (60pcs/detector in HR model) characterized by improved energy resolution, magnetic shielding and long-term stability
  • Lead shielding thickness: 16 mm - 36 mm

Detector electronics

Compact, highly integrated, one-board easily serviceable construction without tuning potentiometers:

  • computer controlled PMT autotuning processor for fast PMT gain stabilization and adjustment
  • computer controlled ODC electronics
  • high precision summation electronics
  • active high voltage bleeder with integrated HV module
Imaging Table
Integrated imaging table for SPECT and whole body examinations
  • motorized vertical movements (250mm)
  • motorized whole body gantry motion (optional)
  • low attenuation (<5%) 2.5mm thin aluminum pallet
  • special head holder
  • max. 180 kg patient weight

Gantry

  • Intel processor based intelligent gantry electronics
  • 15" colour high resolution TFT display
  • high stability, fixed position SPECT gantry
  • pre-programmed robotic gantry motions for positioning
  • 90o, 180o and 360o SPECT movements

Gantry monitor continuously presents information about gantry position, system function and indicates service instructions.

Optional accessories

  • Coincidence imaging package
  • MODEM long-distance service kit (hardware and software)
  • Colour video imager or colour laser printer
  • CODONICS dry film imager
  • Tuning and test phantoms
  • Super high resolution SPECT phantom
Technical Specifications

Measured per NU-1, 1994 using Tc-99m where applicable.
Collimators
  • LEAP collimator set
  • LEHR collimator set
  • LEUHR collimator set
  • MEGP collimator set
  • HEGP collimator set
Performance characteristic Nucline™ X-Ring Units
SPECT UFOV (Useful Field of View)

215 x 230

mm
Number of PMTs

4 x 60

4 x 33

 
Crystal thickness

6.4

9.5

12.5

mm

Intrinsic spatial resolution CFOV FWHM

2.3

2.9

3.4

3.9

mm
    FWTM

4.6

5.8

6.8

7.8

mm
  UFOV FWHM

2.4

3.0

3.5

4.0

mm
    FWTM

4.8

6.0

7.0

8.0

mm
Intrinsic energy resolution UFOV FWHM

9.7

 
Intrinsic flood field uniformity CFOV Differential

1.9

%
    integral

2.4

%
  UFOV differential

2.4

%
    integral

2.9

%
Intrinsic spatial linearity CFOV differential

0.18

mm
    absolute

0.38

mm
  UFOV differential

0.20

mm
    absolute

0.40

mm
Intrinsic count rate performance without scatter maximum

200

kcps
at 20% loss

160

kcps
System spatial resolution with LEGP / LEHR collimator FWHM

8.3 / 6.6

8.5 / 6.9

8.7 / 7.1

8.9 / 7.2

mm
FWTM

16.1/13.1

16.5/13.5

16.7/13.7

16.9/13.9

mm
Maximal matrix size

1024 x 1024

pixel

Camera weight

800

kg

Minimal room size

12

m2

Uptime warranty

98

%
Movements directions

2

 
Collimator mounting

slide-in, bolt fixing

 
Collimator changing time

< 1.5

min
Acquisition Console and Gamma Camera Electronics
Ergonomic acquisition workstation console stands on wheels.

Full-digital electronics assembled from the latest "high-tech" elements including fast PCI bus acquisition interface.

  • Intel Pentium 4, 3 GHz computer with 64 bit memory handling
    • 512 Mbytes memory
    • 512 kbytes L2 cache memory
    • 160 Gbytes hard disk drive
    • CD-RW drive
    • 1.44 Mbytes floppy drive
    • 17" high resolution TFT colour monitor
    • shipped with Windows XP Prof. operating system
  • 40 MHz X,Y,Z A/D conversion
  • 4 independent energy channels
  • multi-channel analyser up to 1024 channels (40 - 600 keV)
  • 4096 x 4096 pixel image digitizing
  • digital corrections:
    • direct addressing TS® simulation linearity correction with FOV increasing technology
    • energy correction
    • uniformity correction without count rate loss
    • three-phase pile-up recovery and resolution enhancing technology for high count rates
Typical Room Layout
The minimum size (4.2 x 2.8 m – 13.78 x 9.2 ft) room layout, and space requirement for brain SPECT examination (not drawn to scale).

Layout Only - Not For Construction. Click on the image to enlarge it.

Harpell Associates Inc.,
1272 Speers Road, Unit 2, Oakville, Ontario, Canada, L6L 2X4
Phone (905) 825-2588, Fax (905) 825-0234, Toll Free: 1-800-387-7168
Email:  Info@Harpell.ca