2. Description of the Barracuda
Hardware and Specifications
2012-10/4.3A
23
Barracuda & QABrowser Reference Manual
Computed Tomography
kVp (standard)
W / 3.0 mm Al
kVp (optional)
W / 3.0 mm Al +
0.25 mm Cu
W / 3 mm Al + 1.2 mm Ti
(Siemens Sensation 32) 2
GECT 2, 3
80 – 150 kV
75 – 145 kV
75 – 145 kV
0.1 ms – 2000 s
1 – 65535 pulses
Estimated total
filtration
1.5 – 38 mm Al
(75 – 150 kV)
±10 % or ±0.3 mm
(75 – 120 kV, HF/DC)
1.2 – 14 mm Al
(75 – 150 kV)
±10 % or ±0.2 mm
(75 – 120 kV,
HF/DC)
1
Note 1: This is valid for a tube with 13° anode angle. The HVL for a 22° anode is typically 0,5 mm
lower (@ 80 kV, 3 mm TF).
Note 2: The C3 and C4 calibrations are only available for product versions 2.0 or higher.
Note 3: The C4 calibration may also be useful for new technology CTs, like Toshiba Aquilion 320
or Siemens Straton (when also HVL and TF is needed).
Note 4: CT dose is measured with a CT ionization chamber connected to an electrometer module.
See topic Specifications, EMM for details.
Pulses
8 nGy/pulse - 60 kGy/pulse
1
Lower limit 10 µGy/s (70 mR/min) otherwise, same as
for air kerma rate.
Min. output peak dose rate
- High Sensitivity
- Low Sensitivity
dose rate (min. pulse width)
4 µGy/s (4 ms) / 30 µGy/s (0.5 ms)
20 µGy/s (4 ms) / 160 µGy/s (0.5 ms)
0.5 – 180 Hz, resolution 0.5 Hz
Minimum pulse width
- High Sensitivity
- Low Sensitivity
pulse width (min. dose rate)
4 ms (4 µGy/s) / 0.5 ms (30 µGy/s)
4 ms (20 µGy/s) / 0.5 ms (160 µGy/s)
Minimum ripple
(pulse top to bottom)
1 – 65535 pulses, resolution 1 pulse
Note 1: Max dose/pulse depends on the pulse length.
Note 2: All kerma and kerma rate ranges, inaccuracy, and resolution figures are valid for product
version 2 and higher of the MPD.
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