DICOM PS3.17 2021d - Explanatory Information

AAAA.4 Single XA Device For Acquisition and Reconstruction (Current)
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## AAAA.4 Single XA Device For Acquisition and Reconstruction

This example is intended to illustrate the encoding mechanisms of the DICOM XA Protocol Storage IODs, not to suggest particular values for clinical use. Further, this example does not contain the many detailed Attributes one would expect from a fully executable defined protocol generated by an XA device, but it demonstrates the usage of many common Attributes.

This section includes one Defined Protocol example of an Adult Carotid Stenting Protocol for one XA device model, developed for a fictitious Mercy Hospital. It contains the following protocol elements:

- Three Acquisition Protocol Elements corresponding to Fluoroscopy, DSA and Rotational acquisition modes.

- One Reconstruction Protocol Element corresponding to the 3D reconstruction of the rotational acquisition images.

### AAAA.4.1 Common Context

Table AAAA.4-1 contains the attributes that are basically the same for each model of equipment from the same manufacturer. The Table AAAA.4-2 contains the attributes specific to one model of equipment.

Table AAAA.4-1. Adult Carotid Stenting Protocol - Context

Attribute | Tag | Value
--- | --- | ---
Equipment Modality | (0008,0221) | XA
Custodial Organization Sequence | (0040,A07C) |
>Institution Name | (0008,0800) | Mercy Hospital
Responsible Group Code Sequence | (0008,0220) | (708174004, SCT, "Interventional Radiology Service")
Protocol Name | (0018,1030) | Carotid Stenting
Potential Requested Procedure Code Sequence | (0018,9907) | (103716009, SCT, "Stent placement")
Contraindications Code Sequence | (0018,990B) | (293638001, SCT, "X-ray Contrast Media Allergy")
Instruction Sequence | (0018,9914) |
>Instruction Index | (0018,9915) | 1
>Instruction Text | (0018,9916) | "Start with fluoroscopy. See Instruction Description."
>Instruction Description | (0018,9917) | Frame Rate: 7.5 frames/second Breathing Technique: No Breath Hold
>Instruction Index | (0018,9915) | 2
>Instruction Text | (0018,9916) | "Follow by one or more DSA acquisitions. See Instruction Description."
>Instruction Description | (0018,9917) | Breathing Technique: Breath Hold Contrast: Omnipaque 350 or Visipaque 320, based on Creatine Clearance Injection: 4ml per second for 10ml total for 6 french catheters. 3ml per second for 8ml total for 4 French Catheters. FOV: 20 cm Table Height: Above IRP
>Instruction Index | (0018,9915) | 3
>Instruction Text | (0018,9916) | "Follow by one rotational acquisition. See Instruction Description."
>Instruction Description | (0018,9917) | Breathing Technique: Breath Hold Contrast: Omnipaque 350 or Visipaque 320, based on Creatine Clearance Injection: 13ml per second for 39ml total for 6 french catheters. FOV: 30 cm Table Height: Carotid at Isocenter
Protocol Defined Patient Position | (0018,9947) | HFS
Anatomic Region Sequence | (0008,2218) | (774007, SCT, "Head and Neck")

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DICOM PS3.17 2021d - Explanatory Information