Frequently Asked Questions About Low Dose Radiotherapy
What is Low-Dose Radiation Therapy (LDRT) used for?
Low-Dose Radiotherapy is primarily used to treat osteoarthritis (OA) and can potentially be used for other types of arthritis like rheumatoid or psoriatic arthritis when there is a significant degenerative inflammatory component.
Is LDRT Effective for All Types of Arthritis?
LDRT is more commonly used for osteoarthritis. For conditions like rheumatoid or psoriatic arthritis, it may be considered if there is long-standing degenerative joint damage causing significant pain.
Are There Any Risks of Bone Loss Due to LDRT?
No. Current evidence suggests that radiotherapy at low doses may improve bone strength rather than cause bone loss.
Is There a Risk of Secondary Cancers from LDRT?
Studies have shown no recorded evidence of secondary malignancies when using LDRT at doses below 8-10 gray (Gy). Most low-dose treatments are given in six sessions of 0.5 Gy for a total dose of 3 Gy. Current clinical evidence suggests that 70% of patients will benefit from additional course of treatment, bringing the total dose to 6 Gy. Each patient’s case is assessed individually for risks and benefits.
At What Age Can Patients Receive LDRT for Arthritis?
Low-Dose Radiotherapy is typically considered for patients over the age of 40 or 50 to further minimize the risk of secondary cancers, although the overall risk is very low even in these age groups. Younger patients may be evaluated on a case-by-case basis.
How Many Sessions Are Typically Required for LDRT?
A standard LDRT course usually involves six treatment sessions, with a follow-up at 12 weeks to assess if a second course is needed. A typical treatment session is 15 minutes, usually provided in a center that administers cancer therapy services.
Does LDRT Work Immediately to Relieve Pain?
Pain relief is not always immediate. Improvements may be seen gradually over 12 weeks following the treatment. Some patients may experience temporary pain flare-ups during this period.
Do I Need a Referral to Receive LDRT?
No, referrals are not strictly necessary. Patients can often contact the clinic directly to schedule an appointment.
What Types of Radiation Machines are Used for LDRT?
LDRT can be delivered using linear accelerators or smaller, office-based orthovoltage machines. Your doctor will choose the most appropriate treatment delivery equipment based on joint location, patient mobility considerations, and patient size.
Is LDRT Available in the United States?
Yes, LDRT is becoming more widely adopted in the United States as awareness increases, although availability can vary by region.
How is LDRT Billed and Covered by Insurance?
Low-Dose Radiotherapy is billed similarly to radiation therapy for bone metastases. Your doctor will use standard radiation therapy billing codes and arthritis-specific ICD-10 codes.
Can LDRT be Used for Conditions Other than Arthritis?
LDRT may also have potential applications for conditions like heterotopic ossification (HO) and other benign inflammatory conditions. More research is ongoing in these areas.
What if I Have Mobility issues – Can I Still Receive LDRT?
Most patients can receive LDRT despite mobility challenges. Accommodations can be made, although extreme mobility limitations may require special arrangements.
How Do I Know if LDRT is Right for Me?
A consultation with a radiation oncologist familiar with LDRT can help determine if the treatment is appropriate based on your condition, medical history, and symptoms.
What Are the Potential Side Effects of LDRT?
Side effects are generally minimal due to the low dose of radiation. LDRT is a safe solution for those seeking treatment.
Some side effects may include temporary skin changes or localized discomfort, but serious side effects are rare. Minor skin irritation symptoms can be treated using over-the-counter medications if needed.