Traveling for LDRT: How Many Visits, How Far Apart, One Trip or Several?

If the nearest center offering LDRT for arthritis is hours away, the first question is practical: how many times do I have to go? A standard course is short. Most programs describe the same shape: one consultation, one planning scan, and six brief treatment sessions spread over two to three weeks. This page walks through each step, what a visit feels like, whether you can do it all in one trip, and what to ask a center before you book travel.

The Standard Course: Six Sessions

The German Society for Radiation Oncology (DEGRO) guidelines describe the regimen as single doses of 0.5 to 1 Gy, up to a total of 3 to 6 Gy per series, given two or three times a week^[1]. The most common form of that is six sessions of 0.5 Gy, a total of 3 Gy.

A randomized trial comparing 0.5 Gy and 1.0 Gy per session found no extra benefit from the higher dose, so 0.5 Gy is now considered the standard single dose under the ALARA principle, as low as reasonably achievable^[2].

The newest high-quality trial, presented at ASTRO 2025 by Dr. Byoung Hyuck Kim of Seoul National University, used 3 Gy in six sessions. At four months, 70.3 percent of the 3 Gy group were responders, versus 41.7 percent with sham^[3].

US programs describe the same shape: six treatments of 0.5 Gy, two or three times a week over two to three weeks^[5]. So a full course means about eight visits in total: the consultation, the planning scan, and six treatment sessions.

What Each Visit Involves

The consultation. You meet a radiation oncologist who reviews your history, your imaging, and your pain, and confirms LDRT is a reasonable option for you^[7][9].

The planning scan. A CT simulation maps the joint so the beam hits exactly the right spot. The team may make a custom positioning device, a small mold, so you lie the same way every time. Some centers also add freckle-sized tattoo marks for alignment^[7][9]. Treatment usually starts about a week after the planning scan^[7][8].

The treatment visits. Each visit takes about 15 minutes, and most of that is careful positioning. The radiation itself is delivered in one or two minutes^[7]. Another program describes being in and out within 30 to 45 minutes, with about five minutes on the table^[8].

You feel nothing during the beam, no more than during an x-ray. Staff leave the room during treatment but watch and listen on monitors, and you can talk to them at any time. The machine, a linear accelerator, beeps and hums. You are not in a confined space^[6].

There is no anesthesia, no hospitalization, and no recovery time. Patients drive themselves home and go back to their normal day^[10][9].

One Trip or Several?

A full course is usually done in one trip. The six sessions fit into two to three weeks, often on Mondays, Wednesdays, and Fridays or every other weekday, so one stay of a few weeks covers the treatment itself^[5][9].

Count the planning visits too. The consultation and the planning scan usually happen on separate days from the first treatment, and the scan often comes about a week before treatment starts^[7][8]. In practice, allow about three to four weeks from first appointment to last session. Or ask the center whether the consultation and planning scan can be scheduled on the same day or back to back, which can shorten the trip.

If you need more than one joint treated, that can often happen in the same course. Cleveland Clinic's standardized care path treats up to three sites at one time^[4]. Ask your center whether both knees, or both hands, can be treated during the same trip.

The follow-up visit, usually about three months after treatment^[7], is another question to raise: can it be a phone or video call, or handled through your local doctor?

What Happens Between Sessions

Nothing much is required of you. There is no recovery time and no downtime between sessions. Most patients return to their daily activities immediately^[9][6].

Do not judge the treatment mid-course. Relief builds gradually. Most people do not notice improvement right away. It often takes about two months or longer for meaningful relief^[7]. Some notice changes within weeks, others after several months^[11]. The standard time to judge the result is about three months after the course^[5][7].

Can You Be Treated Again Later?

Yes. Re-treatment is common in practice. In German clinical routine, a second series about 10 to 12 weeks after the first is well accepted. A third series is usually given about six months later, and a fourth is decided on an individual basis^[2].

US centers describe the same pattern. Patients are reevaluated at three months, and if the response was incomplete the course can be repeated. About half of those who did not respond to the first course respond to a second round three months later^[5].

When it works, the relief can last. One program notes that responding patients often feel the benefit for years, and if pain returns later, repeat treatment can be discussed^[7]. Trial data have shown effects lasting well beyond two years^[2], and re-treatment stayed an option even then^[11].

For travel planning, this means one thing: plan your second-trip decision for about three months after the first course, when the follow-up tells you whether another series makes sense.

Questions to Ask the Center Before You Book Travel

• What is your exact schedule? How many sessions, how far apart, and over how many days does one course run? Schedules vary slightly by center^[1][5].
• Can the consultation and planning scan be combined? Ask whether they must be separate visits, and how long before treatment the planning scan happens^[7][8].
• Can you treat both of my joints in one course? If both knees or both hands need treatment, treating them together saves a trip^[4].
• How is follow-up handled? When is it scheduled, and can it be done by phone or video, or through your local doctor?^[7]
• What total dose will I receive? Expect something like 3 Gy in six sessions at most centers^[1][3].
• If I need a second course, when would that be? Know the timeline before you leave town, so a return trip does not surprise you^[2][5].

References:
1. Guideline recommendations for the radiotherapy of painful degenerative skeletal disorders (DEGRO). Summary table: single doses 0.5-1 Gy, total 3-6 Gy per series, 2-3 times per week. Strahlentherapie und Onkologie. 2015;191:1-6. PDF
2. Low-dose radiotherapy of osteoarthritis: from biological findings to clinical effects, challenges for future studies. Strahlentherapie und Onkologie. 2022. (0.5 Gy as standard single dose per Ott et al.; second series at 10-12 weeks, third at 6 months; effects beyond 2 years.) Springer
3. Kim BH, et al. Randomized sham-controlled trial of 3 Gy in six fractions vs 0.3 Gy vs sham for mild-to-moderate knee osteoarthritis, presented at ASTRO 2025, San Francisco. Reported by HealthDay via Drugs.com, Oct 3, 2025. Drugs.com
4. Low-Dose Radiation Therapy Reemerging for Osteoarthritis. Cleveland Clinic ConsultQD (Chirag Shah, MD). (Standardized care path: up to three sites treated at one time.) ConsultQD
5. Low-Dose Radiation Therapy Making a Comeback for OA. Medscape, 2025. (Six 0.5 Gy sessions, 2-3 times a week over 2-3 weeks; 15-minute visits; CT planning; reevaluation at 3 months; second round.) Medscape
6. Jahraus CD, MD, FACRO, FASTRO. Q and A About RT for OA. Generations Radiotherapy and Oncology PC. (Every-other-day schedule; under 15 minutes per site; painless; staff on monitors; linear accelerator beeps; not a confined space.) Practice Q and A
7. Low-Dose Radiation For Osteoarthritis. Franciscan Health. (Consultation; CT simulation; six treatments over two weeks every other weekday; 15-minute visits; beam in 1-2 minutes; relief takes 2+ months; 3-month follow-up; repeat possible; does not rule out later surgery.) Franciscan Health
8. Can Low-Dose Radiation Therapy Treat Arthritis Pain? ChristianaCare News, September 2026. (Consultation; CT planning scan; treatment starting a week or two later; every other day for 2-3 weeks; 30-45 minutes in and out; about 5 minutes on the table; you feel nothing.) ChristianaCare
9. Long-Term Relief With Low-Dose Radiation for Osteoarthritis. Memorial Hospital of Sweetwater County. (One-hour setup visit; custom mold; tattoo alignment marks; Monday/Wednesday/Friday sessions; 15 minutes each; zero downtime.) Sweetwater Memorial
10. Radiation Therapy for Arthritis. Union Specialty Care. (Non-invasive and painless; no anesthesia or hospitalization; 10-20 minutes from arrival to departure; patients drive themselves; typically 3 times a week for 2 weeks.) Practice page
11. Radiation Treatment for Knee Osteoarthritis. Orthopaedic and Spine Center (Newport News, VA). (Six short sessions over 2-3 weeks; painless; no downtime; relief gradual over weeks to months; benefits up to two years; re-treatment an option.) Practice blog