Total amount of radiation absorbed by specific material or tissues.

Radiation Dermatosis

Skin changes at the site of ionizing radiation.

Radiation Oncologist

A doctor who specializes in using radiation to treat tumors.

Radiation Oncology

The medical specialty of radiation therapy.

Radiation Therapy

The use of radiation energy to interfere with tumor growth. See irradiation.


Of or relating to radiography.


Examination of any part of the body for diagnostic purposes by means of x-rays with the record of the findings usually impressed upon a photographic film.


A physician trained in the diagnostic and/or therapeutic use of x-rays and radionuclides, radiation physics, and biology.


1) The science of high energy radiation and of the sources and the chemical, physical, and biologic effects of such radiation; the term usually refers to the diagnosis and treatment of disease. 2) The scientific discipline of medical imaging using ionizing radiation, radionuclides, nuclear magnetic resonance, and ultrasound.


Impenetrable by x-rays or any other form of radiation.


Resistant to radiation therapy.


Responsive to radiation therapy.


See stereotactic radiosurgery.


A specialist in radiotherapy.


The medical specialty concerned with the use of electromagnetic or particulate radiation in the treatment of disease.

Available Now!

PPRG6-500 Cover
The Pituitary Patient Resource Guide Sixth Edition is now available! Be one of the first to have the most up-to-date information. The Pituitary Patient Resource Guide a one of a kind publication intended as an invaluable source of information not only for patients but also their families, physicians, and all health care providers. It contains information on symptoms, proper testing, how to get a diagnosis, and the treatment options that are available. It also includes Pituitary Network Association's patient resource listings for expert medical care.

Buy Now

  • CalendarPNAJune


Continuing Education Program

Knowledge Icon 500

If you are a nurse or medical professional, register for PNA CEU Membership and  earn CEU credits to learn about the symptoms, diagnosis and treatment options for patients with pituitary disorders. Help PNA reduce the time it takes for patients to get an accurate diagnosis.

button registerNow

For more information click here!