RTI Barracuda - 4. Measurement Principles & Theory; 4.1 Overview of Capability for Measurement Modes; 4.2 Measurement Type Settings

4. Measurement Principles & Theory
2012-10/4.3A
95
Barracuda & QABrowser Reference Manual
4 Measurement Principles & Theory
The QABrowser has a number of measurement algorithms and applications built-in.
This section describes some about the principles, how some values are calculated,
and the basic use of such measurements.
Overview of Capability for Measurement Modes4.1
The following graph shows an overview of some common capabilities the different
X-ray measurement types have in the QABrowser.
Modality
HVL
Application
Estimated TF
Quick-HVL
Radiography
OK
OK
OK
Cine/Pulsed exposure
OK
OK
OK
Fluoroscopy
OK
OK
OK
Pulsed Fluoroscopy
OK
OK
OK
Mammography
OK
–
–
CT
–
OK
OK
Dental
OK
OK
OK
Panoramic Dental (OPG)
OK
OK
OK
Measurement Type Settings4.2
For both the QABrowser and oRTIgo a number of measuring settings and update
modes can be selected, some of them also determines active sensitivity range (the
selected integration time etc.) and also controls the way the displays and/or
electrometers are reset. The table below shows the default settings used by the
QABrowser.
Modality
Update
mode
kV
delay
(ms)
Post
delay
(ms)
WF
(ms)
Auto
reset
Radiography
AE
5
250
320
–
Cine/Pulsed exposure
AE
5
1000
320
–
Fluoroscopy
C
0
250
320
Yes
Pulsed Fluoroscopy
C
0
1000
320
Yes
Mammography
AE
5
250
320
–
CT
AE
5
1500
640
–
Dental
AE
200
250
640
–
Panoramic Dental (OPG)
C
200
250
640
Yes
Light
C
–
250
640
Yes
Abbreviations: AE=After Exposure, T=Timed, C=Continuous, FR=Free run, WF
=Waveform recording time