Image-guided radiation therapy (IGRT) is the use of imaging during radiation therapy to improve the precision and accuracy of treatment delivery. IGRT is used to treat tumors in areas of the body that move, such as the lungs. Radiation therapy machines are equipped with imaging technology to allow your doctor to image the tumor before and during treatment.

1. IGRT (Image-guided radiotherapy)

2. What is IGRT?
IGRT stands for “Image-guided radiotherapy” which uses X-rays, CT scans and various
other imaging techniques before and during radiotherapy treatment. These X-rays and
scans show the size, shape, and position of the cancer tissue as well as the surrounding
tissues and bones.
IGRT is most suitable for Tumours of the Prostate, Urinary Bladder, Lungs and
Gynaecological cancers. With IGRT, doctors can target the radiotherapy treatment
very accurately, this can mean that the treatment works better in curing or controlling
a cancer. It can also reduce the risk of side effects. (IGRT) uses advanced imaging
technology to better define the tumour target and is the key to reducing and ultimately
eliminating the uncertainties with less damage to the healthy tissue.

3. Before the Procedure
For some IGRT procedures, electromagnetic
transponders (Instrument to indicate prostate
size) may be placed inside the body, near or in
the tumor to help the treatment team identify
the area.They are usually placed at least one
week prior to the first radiation therapy
treatment.The patient's skin also may be
marked or tattooed with colored ink to help
align and target the radiation equipment.

4. How it is performed?

5. How It Is Performed?
At the beginning of each radiation therapy
session, the patient is carefully positioned guided
by the marks on the skin defining the treatment
area. Images are then taken using imaging
equipment. The physicians or a radiation therapist
then review the images and compare them to the
images taken during simulation. The patient may
be repositioned, and additional imaging may be
performed. After the patient positioning and other
adjustments, the radiation therapy is delivered to
the patient.

6. Recovery
The patient would have follow-up appointments with your doctor, where they will
evaluate your response to the treatment.You may have blood tests, x-rays, and scans
during these visits for the same. There are chances of some side effects depending on
the area being treated; treatment area becomes red, swollen, can cause itching and
irritation, hair loss in the treatment area, etc. During these follow-up visits; the doctor
will gradually help you recover from the same. Therefore it is recommended not to
miss any of them.

7. Potential Risks
The following risks are possible during the Image Guided Radiation Therapy
procedure:
•Risk of a secondary cancer (in the future)
•Changes in the lung, brain, spinal cord and bone joints, which may occur in rare cases
•Infertility
•The procedure may not be advised for pregnant women and children

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