Vista Imaging Vista Routing - Manual (Page 16)

Routing Overview Routing User Guide
How Routing Priority Works
The following factors are used to determine the priority of a routed exam:
ƒ Assigned priority
ƒ Clinical urgency (autorouting only)
ƒ Time in transmission queue
Priority and Autorouting
For automatically routed exams, the routing software uses the priority assigned in a
routing rule and the clinical urgency of the exam to calculate a numeric value. Images
with the highest priority value are transmitted first.
Factor Values Notes
Assigned priority Low:
Medium:
High:
+250
+500
+750
Priority is set in routing rules as described
on page
9 .
If not explicitly set, a default value of
Medium is used.
Clinical urgency Routine:
Urgent:
STAT:
+0
+10
+20
Values are based on the clinical urgency
defined for the exam in the VistA system.
Priority and On-demand Routing
When an exam is routed on-demand, VistARad’s Route Request dialog can be used to
assign a priority of Low, Medium or High. (The clinical urgency of the exam is not
used). The Route Request dialog is described on page
61 .
If a user selects an exam to be routed on-demand that is already in the transmission
queue, the higher priority of the two instances will be used.
Other Priority Factors
If two or more entries in the transmission queue have the same priority value, entries are
processed on a First In, First Out (FIFO) basis.
Because the transmission processor works on an image-by-image basis, it is possible for
the images in a lower-priority exam to be interrupted ‘mid-stream’ by the images in a
higher-priority exam. If this happens, transmission of all lower priority images will
resume after transmission of all higher-priority images is complete.
VistA Imaging V. 3.0, Patch 18 April 2006 8