X-ray ionization chamber

Beta rayGamma ray

Product Overview
An activity meter based on a gamma-ray ionization chamber designed for nuclear medicine applications. It quantifies radionuclide activity in samples, monitors real-time activity and variation, and provides precise activity measurements for diagnostic and therapeutic workflows.

Key Performance

• Measures common diagnostic radionuclides: 99mTc, 131I, 67Ga, 201Tl, etc.
• Supports therapeutic and positron-emitting radionuclides: 153Sm, 90Y, 186Re, 18F, 15O, 13N.
• One-key automatic background subtraction; no manual zeroing required.
• Automatic measurement and range switching upon sample placement for fast, accurate readings (typ. 5 s).
• Editable and savable radionuclide calibration factors via keyboard.
• Printable measurement reports; selectable display units: Curie (Ci) or Becquerel (Bq).
• Energy sensitivity: X-rays and γ-rays ≥25 keV; β radionuclides ≥1 MeV.
• Measuring range (example for 99mTc): 1 μCi – 10 Ci; accuracy: 1–2% ±1 digit.
• Geometric response: variation ≤±0.5% for 2 cm axial sample displacement.
• Power: AC 220 V ±15%, 50 Hz ±2%, 20 W consumption.

Application Fields

• Department of Radiology: Imaging diagnosis and interventional procedures using X-rays and gamma rays.
• Department of Radiation Oncology: Localized therapeutic irradiation for cancer treatment (radioisotopes, X-rays, electron/proton beams).
• Department of Nuclear Medicine: Diagnostic imaging and radionuclide therapy; supports clinical, research and teaching activities.

Technical specifications

• Category: Nuclear Medical Instruments
• Keywords: Gamma ray ionization chamber, activity meter
• Measured radionuclides: 99mTc, 131I, 67Ga, 201Tl, 153Sm, 90Y, 186Re, 18F, 15O, 13N (examples)
• Energy range: X-rays and γ-rays ≥25 keV; β radionuclides ≥1 MeV
• Measuring range (99mTc example): 1 μCi – 10 Ci
• Measurement accuracy: 1–2% ±1 digit
• Measurement time: typical 5 seconds
• Display units: Curie (Ci) or Becquerel (Bq)
• Geometric response: variation ≤±0.5% at 2 cm axial displacement
• Calibration: editable and savable via keyboard
• Background: one-key automatic subtraction
• Power: AC 220 V ±15%, 50 Hz ±2%, 20 W