Definition/Measurement units (if applicable)
Quantified in angle degrees.
Sentec
Authorized
LuMon
Technician
Qualified technician e.g., a biomedical engineer having successfully
completed a LuMon System
(documented by a respective certification issued by Sentec EIT (or a hereto
authorized third-party)) to perform repair procedures for the LuMon Monitor
that do require opening of its cover and to install software updates and software
upgrades on LuMon Monitors.
The number of usable voltage measurements per image frame as a fraction of the
928 possible voltage measurement.
Quantified in % of the 928 possible voltage measurements
Calculated once per
image frame all modes.
The subset of
Lung Pixels
having RTS-values smaller or equal than 10%.
Silent Spaces reflect the percentage of lung areas with little or no impedance
change during breathing. As such they are meant to represent the percentage of
lung regions receiving no or little ventilation.
Quantified in % of
Lung ROI
area.
Index
calculated once per
Analysis Interval
BB
and
TB-I modes
.
Image displaying the regional distribution of
Functional Lung Spaces
and
Silent
Spaces,
with the latter being subdivided in
Dependent Silent Spaces
and
Non-
Dependent Silent Spaces.
Calculated once per
Analysis Interval
BB
and
TB-I modes.
Image displaying the regional distribution of
Relative Tidal Stretch
within the
Lung
ROI.
Stretch Images are meant to represent the regional distribution of Tidal Volumes
(TV) within the lungs.
Pixel values quantified in % of maximum Lung Pixel Tidal Variation and
represented in color scale.
Calculated once per
Analysis Interval
BB
and
TB-I modes.
One of the available
Analysis Modes
. See 9.7.2.
One of the available
Analysis Modes
. See 9.7.3.
Contour of the
Thorax ROI.
Updated whenever the
Thorax ROI
is calculated
all modes.
An image element within the
Thorax ROI.
Updated whenever the
Thorax ROI
is calculated
all modes.
CT-derived, anatomy-related
Region of Interest
representing the thorax in the
belt plane
of a belt applied to a patient as recommended.
Based on patient specific data the
Thorax ROI
and, hence, the
Thorax Contour
best fitting an individual patient is selected from a set of predefined
Thorax ROIs.
Calculated when data are
entered, that are required
to determine the
Thorax
ROI
and
Lung ROI
best
fitting the specific patient
all modes.
Difference of
Lung Impedance
between end-inspiratory and end-expiratory time
points within an
Analysis Interval
or, in other words, the
Lung Impedance
change
due to tidal ventilation.
As
End-Inspiratory
and
End-Expiratory Lung Impedance
values are related to
end-inspiratory and end-expiratory lung volumes, TVi is related to (in
BB mode
) or
approximates (in
TB-I mode
) the volume inhaled in one breath, i.e. the tidal
volume (TV) when breathing normally, or the inspiratory capacity (IC), in a forced
inspiration.
Quantified in arbitrary, not displayed, units.
Only indirectly available
index
as the difference
between the EILI and EELI
trend.
Either a designation used for two
Analysis Modes
TB-I and TB-II or a
statement used to describe that something repeatedly occurs or is done per time
interval, whereby the time interval has a fixed, preset duration.
The change of an
index
or
parameter
as a function of time.
An example of a waveform derived from
EIT raw data
is the
Plethysmogram.
Image reconstructed from the
EIT raw data
providing the regional impedance
distribution within the
Thorax ROI
for a given image frame.
Pixel values quantified in arbitrary units.
Calculated once per
image frame all modes.
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