Diagnostic Radiation Physics Services (DRPS) provides comprehensive medical physics and radiation safety consulting to imaging facilities throughout Princeton, New Jersey. Princeton is located in Mercer County in the central part of the state, positioned between the New York and Philadelphia metropolitan areas along the Route 1 research and healthcare corridor. DRPS serves facilities in Princeton and the surrounding region, including neighboring Middlesex County, Somerset County, Hunterdon County, and Burlington County—a geographic area that encompasses both academic medical environments and community-based outpatient imaging practices.
Medical Physics Services in Princeton
DRPS delivers the full range of diagnostic medical physics services to Princeton-area imaging centers, outpatient clinics, research-affiliated facilities, and multi-site healthcare organizations:
- Equipment Performance Evaluations (EPEs): Annual and baseline physics testing for radiographic, fluoroscopic, mammography, CT, and other modalities, meeting New Jersey regulatory requirements and national accreditation body standards.
- Radiation Shielding Design & Certification: Workload-based shielding calculations for new imaging suites and facility renovations, with post-construction verification surveys and certification letters signed by a qualified medical physicist.
- Radiation Safety Officer (RSO) Services: Named RSO consulting for facilities holding radioactive materials licenses, including program administration, staff training, regulatory correspondence, dosimetry review, and license management.
- Accreditation Support: Physics testing, image quality review, and documentation preparation for ACR, IAC, RadSite, and Joint Commission accreditation and reaccreditation cycles.
- CT Physics Testing: Complete CT performance evaluations covering image quality metrics, dose assessment, and accreditation-ready reporting for single-scanner and multi-CT configurations.
- PET/CT & Nuclear Medicine Physics: Specialized acceptance testing, annual surveys, and radiation safety program support for PET/CT systems and nuclear medicine departments using radiopharmaceuticals.
- Quality Assurance Programs: Facility-specific QA protocols and staff training developed to match the modality mix and regulatory obligations of each practice.
New Jersey Radiation Regulations
New Jersey radiation safety oversight is administered by the New Jersey Department of Environmental Protection (NJDEP), specifically through two units within its Radiation Protection Element:
- Bureau of X-Ray Compliance: Registers and inspects x-ray equipment statewide. All diagnostic imaging equipment in Princeton facilities—radiographic, fluoroscopic, mammographic, and CT systems—must be registered with the Bureau and operated in compliance with New Jersey's radiation protection rules.
- Bureau of Environmental Radiation: Administers New Jersey's radioactive materials licensing program. New Jersey is an Agreement State under an agreement with the U.S. Nuclear Regulatory Commission (NRC) effective September 30, 2009, meaning the NJDEP—rather than the NRC directly—licenses and inspects radioactive materials users such as nuclear medicine departments and PET/CT facilities.
Additional federal requirements apply: FDA/MQSA regulations govern all mammography facilities, and accreditation body standards (ACR, IAC, RadSite, Joint Commission) carry their own physics testing and documentation obligations.
DRPS assists Princeton-area facilities with NJDEP equipment registrations, radioactive materials license applications and renewals, inspection readiness, and ongoing compliance documentation.
Why Princeton Facilities Choose DRPS
Experience with the central New Jersey research and clinical corridor. The Route 1 corridor between Trenton and New Brunswick is home to a dense concentration of outpatient imaging, academic-affiliated clinics, and specialty practices serving both Mercer County and the surrounding region. DRPS understands the physics program needs of independent outpatient facilities and larger multi-site organizations operating in this corridor.
Board-certified, independent expertise. DRPS physicists hold board certification through the American Board of Radiology (ABR) or American Board of Medical Physics (ABMP). DRPS operates independently of equipment vendors—facility recommendations are based solely on regulatory requirements, clinical need, and accreditation standards.
Full accreditation program support. Princeton-area facilities seeking ACR, IAC, RadSite, or Joint Commission accreditation benefit from DRPS's structured approach to physics testing documentation, submission preparation, and follow-up on corrective actions.
Flexible scheduling for outpatient practices. Freestanding imaging centers and outpatient clinics in Princeton require physics services with minimal disruption to the patient schedule. DRPS coordinates on-site visit timing to accommodate clinical workflow.
Frequently Asked Questions
What medical physics services does DRPS provide in Princeton? DRPS provides equipment performance evaluations (EPEs), radiation shielding design and certification, RSO services, CT physics testing, PET/CT and nuclear medicine physics, and accreditation support (ACR, IAC, RadSite, Joint Commission) for imaging facilities in Princeton and throughout Mercer County and the surrounding central New Jersey region.
Does New Jersey require annual physics testing for my imaging equipment? New Jersey regulations and accreditation body standards (ACR, Joint Commission) generally require annual physics surveys for diagnostic imaging equipment. DRPS performs EPEs for radiographic, fluoroscopic, mammographic, CT, and other modalities and provides written reports suitable for regulatory and accreditation purposes.
Is New Jersey an Agreement State for radioactive materials licensing? Yes. New Jersey became an NRC Agreement State on September 30, 2009. The NJDEP Bureau of Environmental Radiation licenses and inspects radioactive materials users in the state, including nuclear medicine and PET/CT facilities.
What is included in a shielding design for a new imaging suite? DRPS performs workload-based shielding calculations following applicable NCRP guidance (e.g., NCRP Report No. 147 for diagnostic x-ray, NCRP Report No. 151 for CT). The deliverable includes a written report with barrier thickness specifications, occupancy assumptions, and a certification statement for use by architects, contractors, and state regulators.
Can DRPS support accreditation for both mammography and CT at the same facility? Yes. DRPS provides physics testing and documentation for multiple modalities within a single engagement, covering ACR mammography and CT accreditation requirements, as well as IAC, RadSite, and Joint Commission standards where applicable.