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A doctor has recommended radiation therapy, and during the discussion you hear another term: IGRT.
It can sound technical and intimidating, especially when you are already trying to understand a cancer diagnosis. In simple terms, Image Guided Radiation Therapy (IGRT) uses imaging to help the treatment team check the patient's position and treatment area more accurately during radiation treatment.
If you are considering IGRT Therapy in Lajpat Nagar, the first thing to understand is that IGRT is a treatment technique, not a separate type of cancer.
Traditional radiation treatment is carefully planned using scans taken before treatment begins.
IGRT adds imaging during the treatment process. This can help the radiation team confirm that the treatment area is positioned as planned before radiation is delivered.
This extra information can be useful because the body is not completely still. Breathing, digestion, bladder filling, weight changes, and small shifts in position can affect anatomy.
Depending on your diagnosis, radiation oncology may involve:
Image Guided Radiation Therapy (IGRT)
External beam radiation therapy
Stereotactic Body Radiation Therapy (SBRT)
Stereotactic radiation techniques
Radiation for breast cancer
Radiation for lung cancer
Radiation for prostate cancer
Radiation for cervical cancer
Radiation for brain tumours
Radiation for head and neck cancers
Radiation for symptom control
The choice depends on the cancer, its location, treatment goal, and your overall health.
Radiation treatment has two important goals: treat the intended cancer area effectively and protect nearby healthy tissues as much as reasonably possible.
IGRT can support this process by providing imaging information about the patient's position and anatomy.
It is especially useful when the treatment target is close to sensitive organs or when the target may move during normal body functions.
Think about a tumour in an area affected by breathing.
The tumour may not remain in exactly the same position throughout the treatment process. Image guidance can give the treatment team additional information before delivering radiation.
This does not make treatment completely risk-free. It provides another tool for improving accuracy.
When a tumour is close to healthy organs that need protection, positioning accuracy can become particularly important.
Your radiation oncologist may consider IGRT as part of the treatment strategy.
Certain tumours can move with breathing or other internal body movements.
Imaging may help the team account for these changes when appropriate.
Techniques such as SBRT deliver radiation very precisely, often over fewer treatment sessions.
Because the treatment is highly focused, accurate patient positioning becomes especially important.
During a longer course of radiation, the patient's anatomy can sometimes change.
Depending on the situation, imaging can help the team identify changes that may affect treatment positioning.
Radiotherapy continues to play a significant role in cancer care. A 2024 IAEA publication estimates that approximately 50% of cancer patients may require radiotherapy at some point during their illness.
This does not mean every patient requires IGRT. It simply demonstrates how important radiation therapy has become within comprehensive cancer treatment.
The technique should always be selected according to the patient's specific needs.
A common assumption is that newer technology automatically means better cancer treatment.
That is not necessarily true.
A sophisticated technique is useful only when it solves a real clinical problem. IGRT may be valuable for a tumour that moves or sits close to a sensitive organ, while another patient may not need the same level of image guidance.
Instead of asking, “Is IGRT the most advanced option?” ask:
“What specific advantage does IGRT provide in my treatment plan?”
That answer is much more important than the name of the technology.
Your treatment begins with detailed planning.
Your radiation oncologist reviews your diagnosis, scans, pathology, previous treatment, and other medical information. A planning scan is used to identify the target area and nearby organs.
During treatment, you are positioned carefully. Imaging may then be performed to verify your position and treatment area before radiation is delivered.
The exact imaging process depends on the cancer, treatment technique, equipment, and individual treatment plan.
Imagine a patient being treated for a tumour located near an important healthy organ.
The radiation team creates a treatment plan designed to target the tumour while limiting radiation to the nearby organ. Before treatment, image guidance helps verify that the patient is positioned appropriately.
If the images show a relevant difference in positioning, the team can make appropriate adjustments according to the treatment protocol.
That additional verification can be an important part of precise radiation delivery.
Dr. Sandeep Agarwal is associated with cancer care and radiation oncology, helping patients understand complex treatment options without unnecessary technical language. His consultations can cover whether IGRT is appropriate, what the treatment aims to achieve, expected treatment duration, possible side effects, and how radiation fits into the wider cancer treatment plan.
The imaging and radiation delivery themselves are generally painless. However, radiation can cause side effects depending on the body area treated, dose, and individual response.
No. IGRT is selected when image guidance can provide a useful benefit for the particular treatment plan. The decision depends on the tumour, location, movement, treatment technique, and other clinical factors.
There is no standard number. Some patients need a small number of highly focused treatments, while others may receive radiation over several weeks.
If your doctor has suggested IGRT, ask questions before treatment starts.
Find out what the treatment is targeting, why image guidance is being used, how many sessions are planned, what side effects you might experience, and how the treatment fits with surgery, chemotherapy, or other therapies.
If you have been advised to consider IGRT, consult Dr. Sandeep Agarwal, a qualified specialist for IGRT Therapy in Lajpat Nagar, and discuss whether image-guided radiation is appropriate for your individual treatment needs.
