Procedures in Office Settings
Intensity Modulated Radiation Therapy for Cancer Patients
An advanced, precisely targeted radiation treatment that delivers higher doses directly to tumors — while protecting surrounding healthy tissue and reducing side effects.
50%+
of all cancer patients receive radiation therapy
60%+
more costly in a hospital outpatient department vs. an office-based setting
Understanding Intensity Modulated Radiation Therapy
Radiation therapy involves the use of ionizing radiation to treat cancers and certain benign tumors and diseases. More than 50% of cancer patients receive radiation therapy at some point in their care. Advances in delivery techniques have enabled treatments that have few, if any, painful side effects for most patients.
Intensity Modulated Radiation Therapy (IMRT) is an advanced external beam radiation technique that delivers a more precise radiation dose to the tumor and areas at risk of cancer spread — while sparing surrounding normal tissues. Unlike conventional radiation therapy, IMRT uses non-uniform beam intensities that can be individually varied or customized for each patient, resulting in precisely controlled, safe, and effective treatment with fewer side effects.
Office-based IMRT means lower costs — with no compromise in care: Radiation therapy performed in a hospital outpatient department can be more than 60% more costly to Medicare than when delivered in a freestanding office-based setting. Yet the treatment itself — the technology, precision, and outcomes — is identical.
Cancers Commonly Treated with IMRT
IMRT has become the standard of care for a wide range of cancer types. It is particularly valuable when tumors are located near critical structures like the heart, spinal cord, or lungs — where sparing healthy tissue is essential.
Breast cancer • Prostate cancer • Cervical cancer
Head & neck cancers • Pelvic cancers • Lung cancer
Why IMRT Is the Standard of Care
Modern imaging technologies, interventional techniques, and specialized equipment allow
physicians to perform these procedures with precision and safety outside of hospital environments.
Precision Targeting
Radiation is shaped to the exact contours of the tumor, delivering higher doses where needed most.
Reduced Side Effects
Surrounding healthy tissue, organs, and critical structures are spared — minimizing toxicity and improving quality of life.
Personalized Dosing
Each beam's intensity is individually customized to the patient's anatomy and treatment goals.
Painless Delivery
Radiation is delivered painlessly through a linear accelerator — patients feel nothing during each session.
Research & Clinical Outcomes
Two landmark studies establish IMRT's superiority over conventional radiation therapy — documenting significantly reduced toxicity and improved quality of life for patients with pelvic and prostate cancers.
Quality — Pelvic Cancers
Patient-Reported Toxicity during Pelvic Intensity-Modulated Radiation Therapy (Klopp et al., Journal of Clinical Oncology, 2018)
Pelvic cancer patients treated with IMRT experienced significantly less gastrointestinal and urinary toxicity than those treated with conventional radiation therapy. Reduced toxicity directly translates to improved quality of life during and after treatment — allowing patients to maintain more of their normal daily activities throughout the treatment course.
Quality — Prostate Cancers
Intensity-Modulated Radiotherapy for Prostate Cancer (Fischer-Valuck et al., Translational Andrology and Urology, 2018)
Men who received IMRT were less likely to experience severe gastrointestinal toxicity than those who received conventional radiation therapy. These findings have made IMRT the established standard of care for prostate cancer and several other cancer types — a position endorsed by major oncology organizations.
Racial & Geographic Disparities in IMRT Access
Despite IMRT being the established standard of care for multiple cancer types, access to this treatment is not equal. Research documents both racial disparities in who receives IMRT and delays in when treatment begins — as well as a geographic access crisis driven by cuts to freestanding radiation therapy center reimbursement.
Key findings: Worsening Racial Disparities in IMRT Utilization (Hutten et al., Advances in Radiation Oncology, 2022)
A national study of IMRT utilization found that disparities in access to this standard-of-care treatment are not improving — they are getting worse:
-
Black, Hispanic, and Asian patients were found to experience delays in beginning IMRT treatment compared with non-Hispanic White patients.
-
These delays in treatment initiation may directly contribute to differences in cancer outcomes across racial groups.
-
The pattern suggests that disparities in cancer care are systemic, not incidental — and are worsening over time without policy intervention.
Key findings: Geographic Disparities & the Role of Freestanding Centers (Hutten et al., JCO Oncology Practice, 2022)
Rural and underserved communities face compounding barriers to IMRT access:
-
Prostate cancer patients living in rural areas experience decreased treatment choices and reduced provider availability, leading to increased deviation from national treatment guidelines.
-
Freestanding treatment centers are the foundation of rural cancer care — they are often the only access point for radiation therapy in rural and semi-rural communities.
-
However, significant cuts to freestanding radiotherapy reimbursement have been imposed in recent years, leading to closures and reduced access to care for the very communities that need these centers most.
Why protecting office-based radiation oncology reimbursement is a health equity issue
When reimbursement cuts make it financially unviable to operate a freestanding radiation therapy center, the loss falls hardest on rural, low-income, and minority communities — who cannot easily travel to distant hospital systems for daily treatment. Protecting fair reimbursement for office-based radiation oncology is not just a payment policy issue: it is essential to ensuring equitable access to life-saving cancer care for all Americans.
"IMRT delivers a more precise radiation dose to the tumor while sparing surrounding normal tissues — resulting in significantly reduced toxicity and improved quality of life."
Intensity Modulated Radiation Therapy
