
Defining Routing Rules Routing User Guide
Rule Conditions
In routing rules, a condition is a comparison between a particular property of an image
and a user-supplied value. The results of the comparison determine if the rule will be
applied to an image or not.
A routing rule can contain multiple conditions. A single
when statement precedes all
conditions in a rule.
send("KANSASCITY")
when MODALITY = "CR"
SOURCE = "WICHITA"
The parts of a condition are:
property operator value
A property is one of the known attributes of an image. Properties that can be used in a
condition are listed the following section.
An operator is a code for a type of comparison. Operators are described on page
20.
A value is a text or date string supplied by the user. A value specifies what is being tested
in the condition. Values are described on page
21.
Properties
The properties listed in this section can be used in routing rule conditions.
 Property names are not case-sensitive. However, properties are typically rendered
in uppercase.
Frequently Used Properties
MODALITY
Abbreviation for the type of modality. Possible values are listed below. Retired
values are indicated by (ret.).
AS: Angioscopy MA: Magnetic Resonance Angiography
AU: Audio MG: Mammography
BI: Biomagnetic Imaging MR: Magnetic Resonance
CD: Color Flow Doppler MS: Magnetic Resonance Spectroscopy
CF: Cinefluorography NM: Nuclear Medicine
CP: Colposcopy OP: Ophthalmic Photography
CR: Computed Radiography OT: Other
CS: Cystoscopy PR: Presentation State
CT: Computed Tomography PT: Positron Emission Tomography (PET)
VistA Imaging V. 3.0, Patch 18 April 2006 14
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