Introduction — From uncertainty to confidence
The moment you receive a cancer diagnosis, every new medical term can sound frightening. “Radiotherapy” is one of those words. Many patients tell me that their first reaction was fear, fueled by fragmented information found online or by stories they had heard from others.
Yet behind these emotions, there is truly good news today. Modern cancer treatments deliver remarkable results: from minimally invasive surgery to targeted therapies, immunotherapy and, of course, high-precision radiotherapy. Many patients recover completely or keep their disease under control in the long term, continuing to live active lives alongside their families and friends.
In this transformation, radiotherapy plays an essential role. As a local, precise and safe treatment, it contributes decisively either to cure or to keeping the disease under control, whether used alone or in combination with other therapies.
Because the unknown creates fear, the purpose of this article is to offer you accessible explanations and concrete examples, so that you can make informed decisions and regain a sense of control over your own treatment plan.
What exactly is radiotherapy?
Imagine a magnifying glass concentrating sunlight onto a single dry leaf on a tree. Light is everywhere, but only when it is focused does it become an energy capable of changing something. Radiotherapy works according to a similar principle: we use beams of ionizing radiation — most often high-energy X-rays — directed toward tissues that contain cancer cells. These beams damage the ability of malignant cells to multiply, allowing the body to gradually eliminate them. Unlike chemotherapy, which circulates throughout the entire body, radiotherapy is a local treatment: it strikes precisely where needed, while protecting as much healthy surrounding tissue as possible.
Over the last decade, technological advances have had a major impact on radiotherapy treatments. Modern radiotherapy allows treatment to be delivered with far greater precision and speed, significantly reducing the time the patient spends on the treatment table. Before each session, verification images can be performed to confirm positioning, and in some cases the plan can even be adjusted daily so that the dose is delivered with maximum accuracy, better protecting healthy organs while effectively targeting the affected area. Precision reaches fractions of a millimeter, which translates into higher doses to the tumor and lower doses to healthy organs.
When and why radiotherapy is recommended
- After surgery (adjuvant) – to destroy any remaining cells that are invisible under the microscope.
- Before surgery (neoadjuvant) – to shrink the tumor and make surgery less invasive.
- Main treatment – for certain types of cancer (for example, prostate cancer), it can be curative treatment in itself.
- Palliative or symptom-relieving treatment – to reduce pain or bleeding in bone, brain or pelvic metastases.
Key message: Radiotherapy is not the “last resort,” but one of the first modern tools we have.
How treatment works, step by step
Everything begins with the initial consultation, where we assess your medical history, imaging studies and the treatments you have received so far. Many questions are asked in order to understand not only the disease, but also your lifestyle, preferences and possible concerns. Next comes planning: we perform an imaging simulation using a CT simulator, in the exact position you will maintain during each session. Sometimes we create a thermoplastic mask (for head and neck treatments) or use vacuum systems and customized cushions designed to keep the body still. On the simulation CT, the radiation oncologist outlines the treatment volume and the nearby organs that need to be protected, while the medical physicist, together with advanced software, calculates the ideal dose distribution.
The verification phase involves rigorous quality control of the treatment plan so that the dose is delivered exactly as it was calculated. At each session, position verification imaging (CBCT) is performed as a safety measure. Any difference greater than one millimeter is corrected immediately through small adjustments of the treatment table. The procedure itself usually lasts about ten to thirty minutes, depending on the area being treated and the type of treatment used.
You will not feel anything during irradiation: there is no heat, no instant burning and no electric shock. And as soon as you get off the treatment table, you can return to your usual daily activities.
Side effects and how they are managed
Any effective treatment may bring unwanted reactions, but most of them are mild and temporary.
Fatigue is the most common; it appears progressively over the course of the weeks and usually improves within a few weeks after treatment ends. I encourage you to listen to your body and take short breaks during the day, without giving up movement entirely, because gentle physical activity helps fight fatigue better than complete rest.
The skin in the treated area may become slightly reddish, similar to a light tan. It is recommended to avoid friction, hot baths and the use of creams before treatment. For abdominal or pelvic regions, temporary digestive changes or more frequent urination may occur; we anticipate these effects and discuss dietary recommendations and supportive medication from the very beginning.
Nausea may occur when the abdomen is irradiated, but it is well controlled with modern antiemetic medication. In cases of head and neck irradiation, swallowing difficulties or dry mouth may appear, but effective solutions are available for these symptoms.
Other effects may include hair loss in the treated area, changes in taste or a sensation of numbness. These are usually temporary and improve after treatment is completed.
What does NOT happen: You do not become radioactive. And no, you do not “transmit radiation” to others, while severe pain during the session is practically impossible. The medical team, made up of physicians, radiation therapists and physicists, is prepared at all times to intervene quickly if any discomfort appears.
Frequently asked questions
How “strong” is the radiation, and can it harm me in the long term?
Answer: The dose delivered at each session is strictly calculated — enough to destroy cancer cells, but well below the safety thresholds for healthy tissues. As an order of magnitude, the daily exposure is comparable to that of a CT scan, but concentrated locally and fractionated so that the body can quickly repair normal cells. The plan is monitored constantly, and the machine stops automatically if it detects any deviation.
Can I hug my loved ones after each session?
Answer: Yes, external radiotherapy does not leave residual radiation in your body. Physical contact is completely safe.
Will I lose my hair?
Answer: Only if the irradiated area includes the scalp. For breast, pelvic or lung treatments, your hair remains unaffected.
How long will my treatment schedule last?
Answer: Depending on the treatment goal, there are single-session protocols (in stereotactic radiotherapy) all the way to classic plans lasting five to seven weeks. The final duration is decided individually based on several specific factors.
Can I continue working?
Answer: In over 70% of cases, patients continue working throughout treatment, with the recommendation to adjust their schedule if fatigue becomes bothersome.
Do I need to follow a strict diet?
Answer: There is no universal “radiotherapy diet,” but proper hydration and a menu rich in proteins and vitamins help speed up tissue healing.
Can I still exercise?
Answer: Yes, but choose moderate activities: walking, breathing exercises or gentle yoga. Intense physical effort should be postponed until after treatment is completed.
Why you no longer need to be afraid
Today’s technology includes intelligent safety systems: detectors that stop the beam at the slightest unexpected movement, daily checks of machine parameters and regular external audits. In short, the dose calculated in the plan remains the dose you receive, without surprises. Moreover, clinical studies show that external radiation does not increase the risk of other diseases when it is delivered correctly; the benefits clearly outweigh any potential risk.
Closing words — Together, step by step
My name is Tatiana Cirimpei, and beyond being a physician, I am your trusted partner on this journey. I chose radiotherapy precisely because it combines the precision of science with the empathy of human connection. I firmly believe that every patient has the right to clear explanations and to medical decisions that respect not only the disease, but also their values and life plans. If you have reached the end of this article, it means you are ready to move from uncertainty to action.
Do not leave your questions unanswered: write to me whenever you wish or schedule a consultation. In most cases, the clarity gained in a face-to-face discussion is the beginning of healing. Radiotherapy is not just a medical technique — it is a real chance for cure or for improving quality of life.