RTI Barracuda - 2.6.2.2 Specifications, MPD

2. Description of the Barracuda
Hardware and Specifications
2012-10/4.3A
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Barracuda & QABrowser Reference Manual
Typically the exposure time has to be at least 5 ms to get a kVp value but it depends
on the waveform. On modern X-ray generators (high-frequency with fast rise and fall
times) the peak tube voltage can normally be measured with exposure time as short as
1 ms. Dose and time values will be given for even shorter exposure times.
The multi-purpose detector is connected to the multi-purpose module with a 2 m cable
(an optional 6 m cable is also available), however all specifications given are for the
2 m cable.
2.6.2.2 Specifications, MPD
The inaccuracy is here defined as the root of the square sum of systematic errors,
which has not been eliminated, and random errors (dispersion around a mean value).
The calculation of the inaccuracy is based on 15 different measurements and with a
confidence level of 95 %. Of the total inaccuracy, random error is 20 % and general
inaccuracy is 80 %.
Note: Irradiation time is often called exposure time in daily use.
Reference conditions
Temperature
+18 °C to +23 °C
Relative humidity
50 %
Air pressure
101.3 kPa
X-ray field size
Inside the MPD top panel.
Calibration is done with field size typically 5 mm less than the size of the
top panel.
Radiation quality
Radiography
Mammography
CT
70 kV, 2.5 mm Al
28 kV, 30 µm Mo
120 kV, 2.5 mm Al
Note: The reference conditions are given in reference to the IEC61674 standard.
Physical dimensions
Detector area
3 × 21.1 mm
Detector position
8.13 mm below top panel, as indicated in figure below.
Size
122 × 55 × 14 mm (4.8" × 2.1" × 0.55")
Weight
Approximately 250 g