CT ionization chamber

The cylindrical pen-type CT ionization chamber can be used in conjunction with the CT dose phantom for measuring the dose-length product technical parameters of the CT machine.

The ionization chamber was 10cm in length and had a good consistent response over the entire measurement length. Typical measurements are CTDI1 and CTDIW2, the dose-length product, which meets the requirements of IEC 61223-2-6.

Technical indicators

Product type: normal pressure pen type ionization chamber, in line with IEC 61223-2-6 medical CT imaging evaluation and routine test requirements.

Ionation chamber wall: PMMA coated graphite wall thickness: 1mm

Collection pole: aluminum tube outer diameter: 3mm, inner diameter: 2mm

Application: CT machine dose measurement

Measurement quantity: air kerma energy length product, exposure length product

Reference radiation quality: 120 kV, HVL 5.00mm Al (RQR9 specification)

Sensitive volume: 3.14 ㎝ 3

Sensitivity: 14nC/Gy

Long-term stability: ≤ ± 1.0%/year

X energy response: ≤ ± 4.0%

Leakage current: ≤ ± 10fA

Ionation chamber working voltage: ± 100-400v

Energy range: (70-150)kV

Irradiation field: (2*2) cm 2... (40*40) cm 2

The ionization chamber plug can choose BNC, TNC, etc., and can be fully used with PTW, IBA and other dosimeters.