Dr. Arun Kumar Verma


Ex : Senior Resident (AIIMS) , Registrar (PGIMS)

Incharge of Disease Management Group
(GI, GU, lymphoma, NHL, Myeloma, Paediatric and chest tumours /cancer / malignancies )

Senior Oncologist
Max Institute of Cancer Care
Max Superspeciality of Hospital, Patparganj

Services: Radiation Therapy

Radiation therapy is the use of beams of energy to treat tumors.

Doctors first figure out the precise location of the tumor using computed tomography (CT) and magnetic resonance imaging (MRI) scans. Then they use special machines to aim X-ray or proton beams at that site from several angles.

The beams can travel through outer structures, such as skin and bones, to reach the depth of the tumor and kill the tumor cells there.

The technology for this type of treatment has changed remarkably in recent years, even in just the past five years.

Now, doctors are able to target tumors better and to spare healthy areas or limit damage to them. This means fewer side effects for children in the short term and the long term.

Some children with neuroblastoma may be able to have a newer type of radiation therapy called I-131-MIBG therapy. This is a way to get radiation inside your child's body and into their cancer cells via the bloodstream.


Some types of radiation machines may send out beams wider than the place where your child needs treatment. So doctors use blocks inside the machine to stop segments of the beam that would otherwise hit healthy tissue.

Other types of machines emit more focused beams and may be right for certain types of tumors or tumor sites.

Different Types of Radiation Therapy :
Three-dimensional conformal radiotherapy

This was the standard for many years and is still useful in many situations. It focuses two or three X-ray beams on the tumor site.

Intensity-modulated radiotherapy

This is becoming more common. It allows doctors to use more X-ray beams and to focus them in a more precise way to confine the radiation to the tumor.

Fractionated Stereotactic Radiotherapy / Radiosurgery :

This can focus X-rays even more precisely and is good for certain types of tumors in the head, such as craniopharyngiomas, pituitary adenomas, retinoblastomas and other small brain tumors. It helps spare normal brain tissues. It can also be used to treat some problems with the blood vessels. Sometimes this is called gamma knife therapy.

Proton Therapy :

This type uses protons instead of X-rays, so it's even more precise. Protons stop once they reach their target, reducing radiation effects to healthy tissue beyond the target.

Various Linear accelerators or LINAC which able to deliver all IMRT, IGRT, SBRT, SRS, SRT, Rapid arc RT, Gating based Radiation therapy
Interventional Radiotherapy

1. It is also known as Brachytherapy or internal radiotherapy.

2. It is most precise form of radiation therapy.

3. It is minimally invasive.

4. It is quick and effective.

5. It reduce treatment time.

6. It is clinically proven.