Standard Operating Procedure: Radiology Imaging Operations

This Standard Operating Procedure (SOP) outlines the mandatory protocols for the safe, efficient, and diagnostic-quality operation of the X-ray department. These procedures are designed to ensure patient safety, minimize ionizing radiation exposure (ALARA principle), and maintain regulatory compliance. All radiology staff, including technologists and clinical assistants, must adhere to these guidelines to ensure consistency in image acquisition and departmental workflow.

1. Pre-Examination Preparation

• Verification: Confirm the patient’s identity using two identifiers (full name and date of birth) against the imaging order.
• Clinical Screening: Review the requisition for specific anatomical area, clinical indication, and potential pregnancy status for patients of childbearing age.
• Safety Clearance: Remove all metallic objects (jewelry, piercings, clothing with zippers/snaps) from the region of interest to prevent image artifacts.
• Infection Control: Ensure the examination table is sanitized with hospital-grade disinfectant and a clean sheet/pillowcase is applied between every patient.

2. Examination Workflow & Positioning

• Equipment Check: Calibrate the X-ray tube and ensure the generator console is responsive.
• Patient Positioning: Align the patient according to department-specific protocols for the requested projection (e.g., AP, PA, Lateral, Oblique).
• Shielding: Apply protective lead shielding to the patient where appropriate, provided it does not obscure the area of clinical interest.
• Collimation: Narrow the X-ray beam to the smallest field size necessary to cover the anatomy to reduce scatter radiation.
• Exposure: Use the lowest mA and kVp settings consistent with good image quality to minimize radiation dose.

3. Post-Examination & Quality Assurance

• Image Evaluation: Review images on the workstation for motion blur, proper centering, anatomical coverage, and appropriate contrast/brightness.
• Electronic Documentation: Ensure the exam is properly annotated and sent to the PACS (Picture Archiving and Communication System) for radiologist interpretation.
• Patient Release: Verify the patient is stable and provide follow-up instructions regarding report availability.
• Room Turnover: Dispose of hazardous materials, reset the equipment to the neutral “park” position, and disinfect surfaces.

Pro Tips & Pitfalls

• Pro Tip: Always utilize the “PA” view whenever possible instead of “AP” for chest X-rays; it reduces magnification of the heart and improves anatomical clarity.
• Pro Tip: Maintain a “Lead-in-the-Room” policy for pediatric patients; keep a parent or chaperone present to soothe the patient, which significantly reduces the need for repeat exposures due to movement.
• Pitfall: Over-reliance on auto-processing. Always manually verify the exposure index (EI) number. An EI that is too high indicates over-exposure to the patient, even if the image looks “clear.”
• Pitfall: Ignoring the “Symptomatic” side. Always question the patient or check the chart to confirm which side is painful, as clinical orders are frequently prone to clerical errors regarding laterality (left vs. right).

Frequently Asked Questions (FAQ)

Q: What should I do if a patient refuses to confirm their identity or is non-verbal? A: Use a secondary verification method, such as a hospital wristband ID or a witness verification by a second staff member or legal guardian. Never proceed with an examination without positive identification.

Q: How often should the X-ray equipment be inspected for radiation leaks? A: All X-ray equipment must undergo a formal physics inspection by a certified medical physicist annually, or following any major hardware repair, to ensure compliance with state and federal radiation safety laws.

Q: What is the procedure if I suspect an image is of sub-optimal diagnostic quality? A: If an image contains artifacts, motion, or incorrect positioning, you must repeat the exposure immediately. Document the repeat, including the reason, in the quality management log to track trends and identify training gaps.