Henry Seymour Kaplan MD (born in Chicago

Chicago

Chicago is the largest city in the US state of Illinois. With nearly 2.7 million residents, it is the most populous city in the Midwestern United States and the third most populous in the US, after New York City and Los Angeles...

 on April 24, 1918, died in San Francisco on February 4, 1984) was a radiologist who pioneered in radiation therapy

Radiation therapy

Radiation therapy , radiation oncology, or radiotherapy , sometimes abbreviated to XRT or DXT, is the medical use of ionizing radiation, generally as part of cancer treatment to control malignant cells.Radiation therapy is commonly applied to the cancerous tumor because of its ability to control...

 and radiobiology

Radiobiology

Radiobiology , as a field of clinical and basic medical sciences, originated from Leopold Freund's 1896 demonstration of the therapeutic treatment of a hairy mole using a new type of electromagnetic radiation called x-rays, which was discovered 1 year previously by the German physicist, Wilhelm...

.

Together with Edward Ginzton

Edward Ginzton

Edward Leonard Ginzton was a Ukrainian-American physicist.-Education:Ginzton completed his B.S. and M.S. in Electrical Engineering at the University of California, Berkeley and his Ph.D...

, he invented the first medical linear accelerator in the Western hemisphere

Western Hemisphere

The Western Hemisphere or western hemisphere is mainly used as a geographical term for the half of the Earth that lies west of the Prime Meridian and east of the Antimeridian , the other half being called the Eastern Hemisphere.In this sense, the western hemisphere consists of the western portions...

 while he worked at the Stanford University Medical Center

Stanford University Medical Center

Stanford University Medical Center represents the Stanford Hospital and the Lucile Packard Children's Hospital and is located at 300 Pasteur Drive in Stanford, California. Stanford Hospital provides both general acute care services and tertiary medical care for patients locally, nationally and...

 of Stanford University

Stanford University

The Leland Stanford Junior University, commonly referred to as Stanford University or Stanford, is a private research university on an campus located near Palo Alto, California. It is situated in the northwestern Santa Clara Valley on the San Francisco Peninsula, approximately northwest of San...

, San Francisco. The six million volt machine was first used in 1955, six months after another model was first used in England.

The first patient treated by Dr. Kaplan was Gordon Isaacs, who suffered from retinoblastoma

Retinoblastoma

Retinoblastoma is a rapidly developing cancer that develops in the cells of retina, the light-detecting tissue of the eye. In the developed world, Rb has one of the best cure rates of all childhood cancers , with more than nine out of every ten sufferers surviving into...

 of his right eye, and the disease threatened his left eye. The patient survived into adulthood with normal vision in his left eye. His main focus was on Hodgkin's disease, which was fatal before radiation therapy was used.

Kaplan earned his degree from Rush Medical College

Rush Medical College

Rush Medical College is the medical school of Rush University, a private university in Chicago, Illinois. Rush Medical College was one of the first medical colleges in the state of Illinois and was chartered in 1837, two days before the city of Chicago was chartered, and opened with 22 students on...

 in Chicago, after which he trained at the University of Minnesota

University of Minnesota

The University of Minnesota, Twin Cities is a public research university located in Minneapolis and St. Paul, Minnesota, United States. It is the oldest and largest part of the University of Minnesota system and has the fourth-largest main campus student body in the United States, with 52,557...

, Yale University

Yale University

Yale University is a private, Ivy League university located in New Haven, Connecticut, United States. Founded in 1701 in the Colony of Connecticut, the university is the third-oldest institution of higher education in the United States...

 and the National Cancer Institute

National Cancer Institute

The National Cancer Institute is part of the National Institutes of Health , which is one of 11 agencies that are part of the U.S. Department of Health and Human Services. The NCI coordinates the U.S...

. He once said he became interested in oncology after his father died of lung cancer

Lung cancer

Lung cancer is a disease characterized by uncontrolled cell growth in tissues of the lung. If left untreated, this growth can spread beyond the lung in a process called metastasis into nearby tissue and, eventually, into other parts of the body. Most cancers that start in lung, known as primary...

, the same disease which killed Dr. Kaplan, a non-smoker.

In 1969, he became the first physician credited with the Atoms for Peace Prize. He was the first radiologist elected to the National Academy of Sciences

United States National Academy of Sciences

The National Academy of Sciences is a corporation in the United States whose members serve pro bono as "advisers to the nation on science, engineering, and medicine." As a national academy, new members of the organization are elected annually by current members, based on their distinguished and...

 in 1972. In 1979, he received the Charles F. Kettering Prize from the General Motors

General Motors

General Motors Company , commonly known as GM, formerly incorporated as General Motors Corporation, is an American multinational automotive corporation headquartered in Detroit, Michigan and the world's second-largest automaker in 2010...

Cancer Research Foundation.