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Nucline TH/22, TH/33. TH/45:

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Digital high resolution SFOV gamma camera

for thyroid, heart, mamma and small organ imaging

  • small (TH/22) and medium (TH/33 and TH/45) FOV high resolution detector
  • lightweight; 500mm motorized detector motion with digital height display
  • wide range of collimators
  • easily exchangeable collimators
  • integrated ECG triggering device
  • typical intrinsic resolution FWHM <= 2.7 mm
  • FOV: 180x180 / 230x215 / 270x270 mm
  • Intrinsic spatial resolution: 2.5 – 3.9 mm
  • Microcast collimators: LEGP, LEHR, special collimators for thyroid, pinhole
  • Isotopes: Tc-99m and I-131
Detectors
Bonded optics technology for improving light collection and for reducing mechanical stress on the crystal surface.
  • NaI(Tl) scintillation crystal with special assembling case
    • Size: 230 x 210 or 260 x 246 or 300 x 300 mm
    • Thickness: 6.4 mm (optionally 9.5 or 12.7 mm)
  • Photomultipliers:
    • 22 or 33 or 45 pcs of high quantum efficiency PMTs/detector characterized by improved energy resolution, magnetic shielding and long-term stability
  • Lead shielding thickness: 12 mm - 28 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

Gantry

Lightweight, simply adjustable gantry

  • 500 mm motorized vertical detector motion with digital height display
  • multi-directional hand-controlled detector positioning
  • small space demand; less then 2 m2 with patient
  • weight: 180kg with detector

Collimators

  • LEGP collimator
  • LEHR collimator
  • LETH special 99mTc collimators for thyroid
  • HETH 131I collimators for thyroid
  • LEPH 99mTc and HEPH 131I pinhole collimator

Optional accessories

  • Acquisition Console
  • ECG triggering device for cardiac gated studies
  • Lightweight imaging table
  • Plexiglass syringe holder
  • Integrated mobile stand, easily maneuverable
  • Ergometer for stress heart studies
  • MODEM long-distance service kit (hardware and software)
  • UPS
Technical Specifications

Measured per NU-1, 1994 using Tc-99m where applicable.

Performance characteristic * Nucline ™  
Type ( Number of PMTs / Useful Field of View )

TH 22 ( 22 / 180 x 180 )

TH 33 ( 33 / 230 x 215 )

TH 45 ( 45 / 270 x 270 )

 
Crystal thickness 6.4 9.5 12.5 mm
Intrinsic spatial resolution CFOV FWHM 2.9 3.6 4.1 mm
    FWTM 5.8 7.2 8.2 mm
  UFOV FWHM 3.0 3.7 4.2 mm
    FWTM 6.0 7.4 8.4 mm
System spatial resolution with LEAP / LEHR collimator FWHM 8.5 / 7.0 8.7 / 7.2 8.9 / 7.4 mm
FWTM 16.5 / 13.5 16.7 / 13.7 16.9 / 13.9 mm
System sensitivity 240 / 150 260 / 160 280 / 180 cpm/µCi
Intrinsic energy resolution UFOV FWHM 9.9 %
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
Maximal matrix size 1024 x 1024 pixel
Camera weight 180 kg
Minimal room size 6 ( 2 x 3 ) m2
Uptime warranty 98 %
On wheel movement Yes  
Movements directions 3  
Collimator fixing 2 directional auto-fixing  
Collimator changing time < 0.2 min
Acquisition Workstation and Gamma Camera Electronics
Room Layouts

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