Radiation Therapy QA
Comprehensive linac QA programs built on AAPM TG-142 — daily, monthly, and annual testing to keep every machine within clinical tolerances.
TG-142 Compliant
AAPM protocol compliance
Physics engineered for medicine.
Founded in 2008, Precess Medical Derivatives brings the science of medical physics into practice through innovative clinical solutions. We provide comprehensive medical physics services across radiation oncology, diagnostic imaging, and nuclear medicine—from QA and dosimetry to commissioning, imaging, shielding, and regulatory compliance. Beyond services, we build the platforms, tools, and technologies that make complex medical physics solutions more sophisticated, consistent, and efficient.
What we do
End-to-End Medical Physics Support
From daily machine QA to full-site commissioning, our board-certified physicists deliver the clinical precision your department demands.
Dosimetry Services
NIST-traceable absolute dose calibration, beam data acquisition, and independent patient-specific QA — available remotely, on-site, or hybrid.
±1% Accuracy
NIST-traceable measurements
Equipment Commissioning
End-to-end commissioning from vendor acceptance testing through beam data acquisition, TPS configuration, and clinical release.
End-to-End
Acceptance to clinical release
Dosimetry excellence
NIST-Traceable Dosimetry You Can Trust
Our dosimetry programs are built on rigorous AAPM protocols and NIST-traceable calibrations — giving your clinical team the confidence that every dose measurement is accurate, auditable, and defensible.
±1%
Dose measurement accuracy
TG-51
Calibration protocol
NIST
Traceable standards
17+
Planning platforms supported
Clinical partnership
A Physics Partner Built for Modern Oncology
Embedded Clinical Support
Our physicists work alongside your team on-site or remotely — adapting to your workflow, not the other way around.
Board-Certified Expertise
Every physicist on our team holds ABR or DABR certification, bringing the highest standard of clinical competence to your program.
Multi-Site Scalability
From a single community clinic to a multi-campus health system, we scale our support to match your operational footprint.
500+
QA programs delivered
Modalities covered
Every Modality. Every Machine.
From conventional linacs to cutting-edge MR-guided therapy systems — we support the full spectrum of radiation therapy and diagnostic imaging equipment.
Linear Accelerators
Varian, Elekta, and Accuray linac QA and commissioning.
MR-Linac
MRI-guided radiation therapy physics support.
CyberKnife
Robotic radiosurgery QA and commissioning.
Tomotherapy
Helical and CTrue tomotherapy physics programs.
Brachytherapy
HDR and LDR source calibration and QA.
Diagnostic Imaging
CT, MRI, mammography, nuclear medicine, and more.