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Methods
8-5
The rate histogram data consists of 50 points, one taken every 200 milliseconds.
Each point represents the number of valid cells counted during the last 200
milliseconds.
BASO X Histogram
The BASO X histogram displays the event distributions that correspond to the
entire x axis of the BASO cytogram. However, it contains only those events on
the y axis between the noise and basophil thresholds of the BASO cytogram. This
will include the MN (mononuclear) and PMN (polymorphonuclear) populations.
The following parameters are derived from the BASO X histogram:
•
The mode channel (MNx) of the MN population on the x axis (1) (The mode
channel contains the largest number of cells in a particular population.)
•
The mode channel (PMNx) of the PMN population on the x axis (2)
•
The valley channel that separates the MN/PMN populations (3) (The valley
channel contains the fewest number of cells between two populations.)
•
The relative depth of the valley as expressed by d/D (BASO d/D)
•
The Lobularity Index (LI) value provides an indication of sample
abnormality. The Ll is the PMN peak channel number on the Baso X
histogram divided by 14, and it is greater than 1.9 for normal samples.
Values lower than 1.9 are usually indicative of sample abnormality.
BASO Y Histogram
The BASO Y histogram displays
the event distributions from the
noise threshold to channel 49 on
the y axis of the BASO
cytogram. However, it contains
only those events on the x axis
up to the MN/PMN valley
channel of the BASO cytogram.
This will include the MN
(mononuclear) population.
The BASO Y histogram is used to determine the mode channel (MNy) of the MN
population on the y axis.
Summary of Contents for ADVIA 2120
Page 1: ...ADVIA 2120 2120i Hematology Systems Operator s Guide 067D0157 01 Rev 201 0 ...
Page 30: ...1 26 Welcome to the ADVIA 2120 2120i Hematology System ...
Page 46: ...3 12 Daily Routine ...
Page 171: ...7 2 Status Line messages T 93 U 94 V 96 W 98 X 99 Y 99 Z 99 ...
Page 269: ...7 100 Status Line messages ...
Page 341: ...8 72 Methods ...