Filters and a collimator should be used in accordance with what?

• A. Radiographer's Personal Preference
• B. Patient's Request
• C. No Established Plan
• D. Vendor's Quality Assurance Plan

Answer: (D)

Using filters and a collimator according to the vendor's quality assurance plan ensures the beam is defined and filtered in a way that meets the unit’s tested specifications, regulatory requirements, and safety standards. The QA plan outlines the appropriate filtration to remove unnecessary low-energy photons and the correct field size to minimize patient dose while preserving diagnostic image quality. It also provides guidance on when and how to adjust or verify these settings during routine checks, helping to maintain consistent performance across patients and over time. Relying on personal preference, patient requests, or an informal plan can lead to inconsistent exposure and higher or lower doses than intended, whereas following the vendor’s plan keeps practice within proven, tested parameters and supports ALARA principles.