Dr. Swarupa Mitra

Consultant and head of Unit, Rajiv Gandhi Cancer hospital and research Institute. Rohini. New Delhi
Work experience

Dr. Swarupa Mitra Consultant, radiation Oncology. Rajiv Gandhi Cancer hospital and research Institute. Rohini. New Delhi

Read more

news highlight

  • news

    At a camp with ROKO cancer

    Dr. Sawrupa Mitra at a camp with ROKO Cancer


    [Read more]

  • news

    European mates at ESTRO

    Dr. Swarupa Mitra with European mates at ESTRO.


    [Read more]

View all

patient testimonials

  • This is to say a big THANK YOU, to every one,for your professional dedication, genuine care and love during my 3 months in India.

    Oladipo A. M.
  • We write to thank you for the services, the help and support we have received from the Artemis Hospital since we arrived here sometime ago.

    Babatunde A. Sowobi | Uyi Abike Sowobi
View all

History Of Radiotherapy

Radiation therapy has been in use as a cancer treatment for more than 100 years, with its earliest roots traced from the discovery of x-rays in 1895 by Wilhelm Rontgen.


The field of radiation therapy began to grow in the early 1900s with the work of Nobel Prize-winning scientist Marie Curie, who discovered the radioactive elements polonium and radium. This began a new era in medical treatment and research. Radium was used in various forms until the mid-1900s when cobalt and caesium units came into use. Medical linear accelerators have been used to as sources of radiation since the late 1940s.


With Godfrey Hounsfield’s invention of computed tomography (CT) in 1971, three-dimensional planning became a possibility and created a shift from 2-D to 3-D radiation delivery; CT-based planning allows physicians to more accurately determine the dose distribution using axial tomographic images of the patient's anatomy. Orthovoltage and cobalt units have largely been replaced by megavoltage linear accelerators.


The advent of new imaging technologies, including magnetic resonance imaging (MRI) in the 1970s and positron emission tomography (PET) in the 1980s has moved radiation therapy from 3-D conformal to intensity-modulated radiation therapy (IMRT) and image-guided radiation therapy (IGRT). These advances have resulted in better treatment outcomes and fewer side effects.