Radiation Therapy – Everything You Must Know

Radiation therapy is one of the most frequently employed modalities for cancer treatment. It utilises high-energy particles or waves like X-rays, gamma rays, electron beams, or protons to destroy or injure cancer cells. This form of therapy is often an integral component of comprehensive cancer treatment, offered alone or along with chemotherapy, surgery, or immunotherapy.

What Is Radiation Therapy?

Radiation therapy is a type of cancer treatment that causes damage to cancer cells with a particular dose of radiation, intended mainly to shrink tumours, kill cancer cells, and stop their spread. This type of treatment destroys cancer cells and damages surrounding healthy tissue. Thus, detailed planning and accuracy are crucial when delivering radiation.

How Do Radiation Therapies Work?

Cancer divides and grows faster than most normal cells. The DNA of these cells is damaged by radiation, which makes it impossible for them to reproduce. To do this over time, damaged cells die and are disposed of naturally by the body. Unlike chemotherapy, which is systemic and thus also affects the whole body, radiotherapy is more localised as it only targets a specific part of the body where cancer is present.

Types of Radiation Therapy

There are two main branches of radiation therapy:-

External Beam Radiation Therapy (EBRT)

The external beam therapy encompasses distributing high-energy beams directed at the tumour from outside the body by a machine called a linear accelerator. Here’s what comes under EBRT:-

• 3D Conformal Radiation Therapy (3D-CRT) – Uses imaging technology to shape radiation beams to the tumour’s contours.
• Intensity-Modulated Radiation Therapy (IMRT) – Delivers precise doses to minimise damage to surrounding tissues.
• Stereotactic Radiosurgery (SRS) and Stereotactic Body Radiation Therapy (SBRT) – Provide highly focused radiation in fewer sessions.

Internal Radiation Therapy (Brachytherapy)

In this procedure, radioactive material is placed either inside or near the tumour. It enables a high dose to be applied to cancer while limiting the amount directed to surrounding healthy tissue. Brachytherapy is frequently used for prostate, cervical, and breast cancers.

When Is Radiation Therapy Used?

Radiation therapy may be recommended by doctors for different reasons:-

• Cure – Treatment is intended to provide a cure for cancer.
• Adjuvant Therapy – After surgery, it destroys remaining cancer cells.
• Neoadjuvant Therapy – To shrink a tumour for easier removal before surgery.
• Palliative Care – Control symptoms and enhance quality of life late in cancer.

Benefits of Radiation Therapy

• High Precision – High-tech equipment enables targeted tumour treatment.
• Non-Invasive – Most forms do not involve a surgical process, such as EBRT.
• Improved Results – These are usually combined with other treatment forms for better outcome success.
• Pain Relief – Reduces pain and symptoms of late-stage cancers.

Potential Side Effects

Though very effective, radiation therapy may cause short- or long-term side effects, depending on the area and dose:-

• Fatigue – Most commonly experienced during the treatment.
• Skin Irritation – Itchy, red, or scaly areas within the treating area.
• Hair Loss – Post-radiotherapy induced only in areas of radiation exposure.
• Nausea or Loss of Appetite – Mostly, the patients under treatment are in the abdominal area.
• Chronic Effects – fibrosis, changes in organ function, or secondary cancers (rare).

Doctors usually provide medications and care tips to manage the side effects well.

Radiation Therapy Preparation 

The health care team assesses before starting the radiation therapy.

• Image Testing – CT, MRI, or PET scans are used to locate the tumours accurately.
• Simulation – A mock session to plan out positioning and dosing.
• Skin Marking or Masks – ensuring accurate treatment delivery.

What to Expect During the Procedure

Most patients will find radiation therapy sessions to be almost pain-free and last only a few minutes, although preparations may take longer. The treatment is given about five days a week for several weeks, depending on the dose prescribed. After every session, the patients can return home and resume their normal activities with some restrictions. We at Lyfecare, provide advanced Radiation therapy in Delhi for targeted cancer treatment. To explore the best options for timely treatment and specialized care, consult one of our cancer specialists in Delhi at our specialized facility and take the first step towards a new life.

A Patient After Radiation Therapy – Recovery and Follow-Up

After treatment, patients must have regular follow-up visits to assess their progress and treat any late side effects. Healthful living, regular balanced meals, good hydration, and adherence to medical advice help speed recovery.

Precautions During & After Radiation Therapy

• Do not use harsh skin products on the affected area.
• Protect from the sun.
• Report unusual symptoms to the physician.
• Eat right and get enough sleep.

Frequently Asked Questions

Does radiation therapy hurt?

No, it is painless like an X-ray.

Am I going to lose my hair?

Hair loss occurs only in the area treated, not across the body.

Will I be able to work during my radiation therapy?

You can, however, fatigue may be a factor, and you should organise your schedule accordingly.

Is radiation therapy safe?

Yes. Modern techniques aim for minimal injury to normal tissues and organs.

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