In 1970 I realized that there was negligible risk from x-rays but many radiographs had poor image quality so that the risk from a false negative was significant.

The growth of technology is such that it is not possible today for a nuclear physicist to switch into medical physics without training. The field is now much more technical. More training is needed to do the job.

I have the satisfaction of knowing I did something useful for society.

Most medical physicists work in the physics of radiation oncology making sure that the desired dose is given to the cancer and the dose to normal tissues are minimized.

When I entered the field in July 1958 I believed what they told me about radiation risks. I spent much effort reducing the dose to patients in radiology.

Medical physicists work in cooperation with doctors. A few medical physicists devote their time to research and teaching. A few get involved with administrative duties.

Too many radiologists still believe there is a risk from a chest x-ray. Few radiologists can explain radiation to the patient in words the patient can understand.

I am now almost certain that we need more radiation for better health.

I was the Chair of the first department of medical physics in a medical school in the U.S.

There are now over 5,000 medical physicists in the U.S more than 50 times the number in 1958.

Many Nobel Prizes are awaiting good research to understand and explain the many mysteries of our bodies, such as the basic mechanism of memory or imagination.

In 1970 I realized that there was negligible risk from x-rays but many radiographs had poor image quality so that the risk from a false negative was significant.

I would not encourage everyone to take up this profession. Not everyone is suited for any particular field.

We developed simple test tools to optimize imaging parameters. No company was interested in our idea.

If someone is interested in medicine and also in physics and they like working with people and communicate well with others, I would strongly encourage them.

I have devoted much time and energy to helping medical physics in developing countries.

I am sure that I have been much more useful to society as a medical physicist.

In some cases radiation reduces the incidence of cancer.

I am not unhappy that my contribution was not recognized. I am sure it helped my career.

I don't display my plaques and honors. They are hidden behind a black curtain in my work room at home.

Nuclear physics is interesting but it is unlikely to help society.

Medical physics is an applied area of physics.

I found collaborating with congenial doctors about problems that physicists could help solve was very satisfying. I also like educating anybody who would listen!

It is likely that we need more radiation to improve our longevity.

My main frustration is the fear of cancer from low dose radiation, even by radiologists.

I started the nuclear medicine laboratory at UW Hospitals in 1959 and trained radiology residents in the field. It was 1965 before they found a trained MD (doctor) to take over my role.

When I entered medical physics in 1958 there were fewer than 100 in the U.S. and I could see many opportunities to apply my knowledge of nuclear physics.

If you realized how powerful your thoughts are, you would never think a negative thought.

We cannot and will not ban the creation of violent video games. But, we can prevent the distribution of these disturbing games to children, where their effects can be negative.

Accent your positive and delete your negative.

We must concentrate not merely on the negative expulsion of war but the postive affirmation of peace.

I think we typically, as Northerners, stereotype what the South is in so many negative ways. We kind of forget all the beautiful things that they contribute to make this country a country.

Maybe I'm being philosophical and spiritual, but I believe that if you put negative energy out there that that is what will come back.

It takes but one positive thought when given a chance to survive and thrive to overpower an entire army of negative thoughts.

I was raised a Christian, but I wouldn't call myself a Christian now. I think when I was younger it was easier to focus on the negative, nihilist vision... this is sort of picking up on the other half of the body, which is God and white light.

Kant introduced the concept of the negative into philosophy. Would it not also be worthwhile to try to introduce the concept of the positive into philosophy?

An investigator starts research in a new field with faith, a foggy idea, and a few wild experiments. Eventually the interplay of negative and positive results guides the work. By the time the research is completed, he or she knows how it should have been started and conducted.

The negative side of football. The negative side of our society. People sometimes go to football and bring to it the negative aspects of our society.

For each of us who appear to have had a successful experiment there are many to whom their own experiments seem barren and negative.

Every positive value has its price in negative terms... the genius of Einstein leads to Hiroshima.

I do my job in Type O Negative.

My weaknesses are my jumps. The reason is that although I land them in practice, when I actually compete or perform, I should let my body go and stabilize my mind better. Also, I need to work on not letting negative thoughts and emotions get to me on the ice.

Although, this is often used with negative connotations, I see ideology as an inherent part of culture.

The best proof of the high quality of American beef is the continued negative BSE findings supported by the highest surveillance possible. The administration should be working to increase our surveillance of BSE, not scaling it back.

None can be more negative in its impact than the limitation on human resource capacity.

My tastes lean toward the more negative, angry and eclectic.

Man is lost and is wandering in a jungle where real values have no meaning. Real values can have meaning to man only when he steps on to the spiritual path, a path where negative emotions have no use.

I'm really thankful to God, man. Like now, I'm really making a real comeback with my group. With or without a record, with or without a movie. And behind all the negative press behind this movie.

The closer we come to the negative, to death, the more we blossom.