Imaging Appropriateness Decision Support Flow & Request Template

Purpose

Help clinicians choose the right imaging study and give radiology teams a reproducible triage path so patients receive timely, appropriate imaging with minimal unnecessary radiation or cost. This workflow is editable for local protocols and EHR integration.

Scope

Applicable to all diagnostic imaging orders (X-ray, CT, MRI, ultrasound, nuclear medicine) placed in outpatient, ED, and inpatient settings. Use this workflow to standardize decision-support prompts, triage review, and urgent clarification/escalation.

Key Roles

• Ordering Clinician: Initiates order, completes required clinical fields, reviews decision-support prompts.
• Radiology Triage Clinician/Technologist/Coordinator: Reviews orders flagged for clarification, applies triage checklist, requests clarifying information when needed.
• On-call Radiologist: Provides rapid clinical clarification for urgent or high-risk cases.
• Quality/Clinical Informatics Lead: Monitors metrics, updates appropriateness pointers, and tailors CDS rules.

High-Level Workflow Steps

1. Ordering clinician starts an imaging order in the EHR and sees inline decision-support prompts (editable evidence-based pointers).
2. Order must include required clinical information (see Request-Form Template).
3. If CDS rates the order appropriate, it proceeds automatically to scheduling/radiology queue.
4. If CDS flags the order as potentially low-value or incomplete, it is routed to Radiology Triage for review.
5. Radiology Triage applies the triage checklist and either: a) accepts; b) requests clarification from ordering clinician; c) recommends an alternate modality; or d) escalates to on-call radiologist for urgent cases.
6. All clarifications and decisions are recorded for audit and improvement metrics.

Editable Decision-Support Prompts (examples)

• "Is this for trauma, infection, malignancy surveillance, symptom evaluation, or follow-up?"
• "Provide brief clinical question in one sentence (e.g., 'rule out acute appendicitis')."
• "Have you considered ultrasound or MRI to avoid ionizing radiation?"
• "Any prior imaging in last 12 months? Provide date/modality."
• "If pregnancy is possible, confirm pregnancy test or LMP."
• Link to local appropriateness guidance (e.g., ACR Appropriateness Criteria) and preferred local protocols.

Request-Form Template (required clinical information)

Make these fields mandatory or strongly suggested on order entry:

• Clinical question / working diagnosis (one sentence)
• Relevant symptoms and onset (duration)
• Urgency level (routine, urgent, STAT) with justification
• Relevant exam findings and vitals if applicable
• Relevant labs (e.g., creatinine for contrast CT) and last result date
• Prior imaging (modality and date) and brief summary of findings
• Contraindications (pregnancy risk, allergy, implanted devices)
• Preferred modality if clinically indicated and why
• Contact phone for clarifications (ordering clinician or team)

Radiology Triage Checklist

Use a simple checklist with forced-choice actions to reduce delay and ambiguity.

1. Does the order contain the required clinical question and details? If no → Request clarification from ordering clinician (use scripted message).
2. Is prior imaging available and sufficient? If yes → consider comparison and proceed; if no → request prior images or summary.
3. Does the requested modality answer the clinical question with reasonable sensitivity/specificity? If no → suggest alternative modality (e.g., US instead of CT) with brief rationale.
4. Is there any safety/pregnancy/renal concern? If yes → verify labs/pregnancy test and consult radiologist if contrast is planned.
5. Is the case urgent based on clinical data or triage nurse input? If yes → escalate to on-call radiologist for decision within defined SLA.
6. Record action: Accept / Clarify / Recommend Alternative / Escalate. Log reason and timestamps for audit.

Escalation Criteria & Script

Escalate to on-call radiologist when any of the following apply:

• Life- or limb-threatening findings suspected (e.g., suspected active hemorrhage, stroke, acute airway compromise)
• Urgent need for contrast when renal function unknown and delay could harm the patient
• Conflicting or missing critical clinical data that prevent safe imaging
• Ordering clinician requests immediate radiologist input

Suggested escalation script (to ordering clinician): "We need a rapid clarification to proceed safely: [specific missing item]. Please call radiology at [phone] or reply in the EHR. If urgent, mark STAT."

Data Capture & Audit Fields (minimum)

• Order ID, ordering user, ordering department
• CDS appropriateness score and reason
• Triage outcome (accept / clarify / alternative / escalate) and timestamps
• Time from order to scheduled/exam/clarification
• Final report: whether study answered clinical question and any follow-up recommendations

Suggested Metrics to Track

• % of orders with required clinical question completed
• % of orders reviewed by triage team
• % of orders changed to alternative modality after triage
• Time from order to clarification resolution
• Reduction in low-value imaging rate (local definition)
• User satisfaction scores and qualitative feedback from ordering clinicians

Local Tailoring Checklist

Before deploying, decide and document:

1. Which CDS rules and appropriateness guideline versions to use (e.g., link to ACR, specialty pathways)
2. Who performs triage and coverage hours
3. Escalation SLAs and contact information
4. Which request-form fields are mandatory vs optional
5. Reporting cadence and owners for KPI review

Quick Scripts & Templates (for EHR messaging)

Clarification request (non-urgent): "Please clarify the clinical question and provide recent relevant imaging or results so we can schedule appropriately. If ultrasound or MRI would be better, we'll recommend it. —Radiology Triage"

Urgent escalation (phone): "This is Radiology Triage. The order for [patient name/ID] needs immediate clarification for safe imaging. Please call back at [phone]."

How to Use This Workflow

Keep the decision-support prompts concise and visible at order entry. Make required fields practical to complete. Route unclear or potentially low-value orders to a small, trained triage team to keep throughput high. Capture triage decisions and outcomes for weekly KPI review and continuous improvement.

References & Evidence Pointers (editable)

• American College of Radiology Appropriateness Criteria — use local link if institutional subscription exists
• Choosing Wisely recommendations for imaging
• Local radiology protocols for contrast and pregnancy screening

Editable Elements (to localize)

Replace placeholders for phone numbers, local protocols, SLA times, and appropriateness references. Consider adding specialty-specific decision trees (e.g., ED head CT, chest pain CT angiography, pediatric appendicitis imaging).

Next Steps & Implementation Notes

Start with a pilot in one unit (ED or outpatient imaging) and measure the KPIs listed. Use short PDSA cycles to refine mandatory fields, triage staffing, and CDS prompts. Collect clinician feedback and share improvements transparently.