MOOR INSTRUMENTS moorLDI2 RESEARCH USER MANUAL
57
8. REPEAT AND LINE SCAN MEASUREMENT
8.1 INTRODUCTION
There are many situations where it is an advantage to take successive measurements of the same
tissue site to observe a response evolve in timed sequence.
The minimum time between successive measurements is determined by the size and resolution of the
images to be taken.
In Version 5, the user can set a time interval between starting points of each image with safeguards to
ensure that overlaps are not attempted.
A great advantage of the
Repeat Scan and Line Scan
function is the facility, within the processing
module, for simultaneous processing and analysis of each image (described in Sections 11 and 14).
Repeat Scan
repeatedly scans the same area. The time between scans can be set.
Repeat Line
measures
from the same line continuously, scanning backwards and forwards. The
number of line scans can be set. Line scan enables measurements at upto 256 points on the line of
scan in approximately one second with a fast scan speed (4ms/pixel).
8.2 REPEAT AND LINE SCAN SET UP
The characteristics of the scan window and system set up are the same as for single Image Scan. It is
necessary for these features to be set up also prior to Repeat Scan. This is done in
Scanner Setup
Repeat scan parameters are: the repeat interval
the number of scans (upto 105)
Repeat line parameters are: number of lines (up to 26,250 ie 105 x 250)
8.2.1 REPEAT INTERVAL
The interval which can be set by the user represents the time between the start of successive scans.
A Repeat Scan set can be interrupted with a
Pause
and will continue with the sequence when the
Pause button is clicked. A
Line Scan
operates continuously i.e. there is no option to increase the time
between successive lines.
The resolution of time interval is 1 second.
8.2.2 NUMBER OF SCANS
Set this to the total number of scans required upto a limit of 105 scans. Any number of scans can be
performed (
≤
105).
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