Vista Imaging Vista Routing manual How Autorouting Works, Identifying Images to be Autorouted

Routing Overview Routing User Guide

How Autorouting Works

The following figure illustrates the transfer of automatically routed images to a VistARad workstation for remote reading. The processes outlined in this figure are explained in more detail below. (Apart from the destination, the same processes are used when autorouting images to a DICOM Storage SCP).

Images	Image G/W		Routing G/W	Routing G/W	Images
	processes		compares	copies
					reviewed
acquired	images,	then	image data	routable images
					at destination
	archives	images	to routing rules (1)	to destination (2)
Images	Patient	VistA		VistARad login
	data
		HIS
			Sending Site	Destination Site
Modality
	Image links		1
Image Gateway			2 Routing Gateway	2	VistARad

1)Eval. Processor

2)Trans. Processor

Images	Local image copies
Image Archive	Remote Storage
	Destination

Identifying Images to be Autorouted

Autorouting begins with an Image Gateway. As it is processing newly acquired images, a properly configured Image Gateway will add routing-specific entries to the rule evaluation queue.1 This queue is continually checked by the evaluation processor (which resides on the VistA Host and is started from the Routing Gateway).

ÂIf the Image Gateway is not configured to add entries to the rule evaluation queue, the images being processed by the gateway cannot be autorouted. For more information, see page 44.

Each image referenced in the rule evaluation queue is checked against a set of site-specific routing rules. If the rules indicate that the image should be routed, the evaluation processor creates an entry in the transmission queue.2 Entries in the rule evaluation queue are deleted after they are checked.

1The rule evaluation queue is a subset of the IMAGE BACKGROUND QUEUE file (#2006.03).

2The transmission queue is stored in the SEND QUEUE file (#2006.035).

4 VistA Imaging V. 3.0, Patch 18 April 2006