V.6.2.1 Substance Approval Query SOP Class Overview

The Substance Approval Query SOP Class defines an application-level class of service that allows a device at the point of care to obtain verification of the appropriateness of contrast agents and other drugs administered during a procedure, based on the substance label barcode and the patient ID. The response is an authorization to proceed, or a warning, or a contra-indication for presentation to the system operator.

The Substance Approval Query SOP class supports the following example use cases:

— Obtain verification that administration of a specific drug or contrast agent for an image acquisition is appropriate for the patient

— Obtain verification that the implantation of a specific device under imaging guidance is appropriate for the patient

The Substance Approval Query SOP Class does not specify the mechanism used by the SCP to verify such appropriateness of administration (e.g., by comparison to allergy information in the patient’s electronic health record). The duration of validity of an approval beyond the time of the response is not defined by the Standard.