Diagnostic Radiation Physics Services (DRPS) provides board-certified medical physics and radiation safety consulting to healthcare facilities throughout Bethesda and the greater DC metro region. Bethesda is an unincorporated, census-designated place in southern Montgomery County, Maryland, situated just northwest of Washington, D.C. — a location that places it at the center of one of the most densely served healthcare corridors on the East Coast. DRPS serves imaging centers, outpatient facilities, health systems, and specialty practices across Bethesda and its surrounding communities, including Chevy Chase, Rockville, Silver Spring, Gaithersburg, Germantown, Takoma Park, and Wheaton, as well as facilities in adjacent Prince George's County and the Northern Virginia jurisdictions of Arlington and Fairfax across the Potomac.
Medical Physics Services in Bethesda
DRPS delivers the full scope of diagnostic medical physics support that Bethesda-area facilities require to maintain regulatory compliance, achieve accreditation, and protect staff and patients.
Equipment Performance Evaluations (EPEs): Comprehensive annual surveys for general radiography, fluoroscopy, mammography, CT, and nuclear medicine equipment — conducted in accordance with applicable state and national standards, with documented reports suitable for regulatory submission and accreditation review.
Radiation Shielding Design and Certification: Site-specific structural shielding calculations for new construction, renovation, and equipment replacement projects. DRPS prepares shielding design reports aligned with NCRP guidance and coordinates with facility architects and contractors to ensure compliant, cost-effective installations.
Radiation Safety Officer (RSO) Services: Ongoing or interim RSO support for facilities holding Maryland radioactive materials licenses, including program management, personnel dosimetry oversight, sealed source inventory, and regulatory correspondence with the Maryland Department of the Environment (MDE).
Accreditation Support: Preparation and review for ACR, IAC, RadSite, and Joint Commission accreditation programs — covering phantom image acquisition, technical standard documentation, and physicist report deliverables formatted to each accrediting body's requirements.
CT Physics Testing and Optimization: Acceptance testing, annual surveys, and image quality optimization for single- and multi-detector CT systems. DRPS provides dose index tracking, protocol review, and guidance on dose optimization strategies consistent with current AAPM task group recommendations.
PET/CT and Nuclear Medicine Physics: Performance testing for PET/CT scanners and gamma cameras, including uniformity, resolution, sensitivity, and system calibration verification. Consultation on facility design requirements for radioactive materials handling and radiation safety program development for nuclear medicine departments.
Quality Assurance Programs: Custom QA protocol development, staff training support, and ongoing QA program review for all modalities — designed to meet regulatory minimums while integrating smoothly into clinical workflows.
Maryland Radiation Regulations
Healthcare facilities operating imaging equipment in Bethesda and throughout Montgomery County are subject to oversight by the Maryland Department of the Environment (MDE), Radiological Health Program. Maryland is an NRC Agreement State, meaning the state has entered into a formal agreement with the Nuclear Regulatory Commission to assume regulatory authority over radioactive materials. As a result, facilities using radioactive materials in Maryland — including nuclear medicine and PET/CT operations — are licensed directly by MDE rather than by the NRC.
X-ray producing equipment (radiographic, fluoroscopic, CT, and mammography units) is registered with and inspected under MDE's radiological health authority. Facilities are expected to maintain current equipment registrations and to conduct periodic physics evaluations in accordance with Maryland regulations and applicable national standards, including MQSA requirements for mammography, ACR accreditation standards, and Joint Commission standards where applicable.
DRPS maintains current working knowledge of MDE requirements and helps Bethesda-area facilities navigate both the state regulatory framework and the parallel requirements imposed by federal programs and accrediting organizations.
Why Bethesda Facilities Choose DRPS
Board-Certified Expertise: DRPS physicists hold DABR certification in diagnostic medical physics — the credential recognized by accrediting bodies and regulators as the professional standard. Facilities can be confident that physicist reports and certifications carry the documentation weight required for accreditation and regulatory compliance.
DC-Metro Cross-Jurisdictional Fluency: Bethesda's position at the intersection of Maryland, the District of Columbia, and Northern Virginia means that many health systems and multisite imaging groups operate facilities across all three jurisdictions simultaneously. DRPS serves facilities in all three areas and understands the distinct regulatory requirements of MDE (Maryland), the DC Department of Health, and the Virginia Department of Health's Office of Radiological Health — eliminating the need to manage multiple physics consultants across a regional network.
Responsive, Practice-Level Service: DRPS works directly with practice administrators, radiology managers, and RSOs — not through layers of corporate scheduling. Facilities receive direct communication, timely report turnaround, and a consultant who understands the operational realities of running an imaging program.
Full-Scope Support Without Referrals: From initial shielding design through equipment commissioning, ongoing annual surveys, accreditation preparation, and RSO program management, DRPS covers the complete lifecycle of a facility's physics needs under a single engagement.
Frequently Asked Questions
Does my Bethesda imaging facility need a board-certified medical physicist on file for accreditation? Yes. ACR, IAC, and Joint Commission accreditation programs require that annual physics surveys and equipment performance evaluations be performed by or under the supervision of a board-certified medical physicist. MDE regulatory requirements independently mandate periodic physics evaluations for certain equipment categories. DRPS provides the physicist-of-record documentation required by these programs.
Who regulates radioactive materials in Montgomery County facilities — MDE or the NRC? Maryland is an NRC Agreement State, so MDE's Radiological Health Program holds regulatory authority over radioactive materials within the state, including Montgomery County. Facilities using radioactive materials — such as nuclear medicine departments and PET/CT operations — obtain and maintain their licenses through MDE, not directly through the NRC. DRPS can assist with initial license applications, license amendments, and ongoing program compliance.
Our health system has facilities in both Maryland and Northern Virginia. Can DRPS serve both? Yes. DRPS provides medical physics and radiation safety consulting services across Maryland, the District of Columbia, and Virginia. Virginia regulates x-ray equipment and radioactive materials through the Virginia Department of Health's Office of Radiological Health, which is a separate regulatory framework from MDE. DRPS is familiar with requirements in all three jurisdictions and can coordinate a unified physics program across a multi-state facility network.
What is the difference between equipment registration and accreditation in Maryland? Equipment registration with MDE is a state regulatory requirement for operating x-ray producing machines — it is not optional and does not depend on whether the facility pursues voluntary accreditation. Accreditation through programs such as ACR or IAC is a separate, typically payer-driven requirement that layers additional technical standards on top of state registration. DRPS helps facilities satisfy both.
How far in advance should I engage a physicist for a new imaging suite or equipment replacement? For new construction or significant renovation projects, shielding design consultation should occur before architectural drawings are finalized — ideally at schematic design phase. For equipment replacements where room modifications may be required, engaging a physicist at the time of equipment selection avoids costly post-installation changes. DRPS can provide project-phase guidance specific to your Bethesda or Montgomery County facility.