Blog

Data from epidemiologic studies of human populations exposed to doses of ionizing radiation sufficient to cause acute radiation syndrome have been obtained from:Atomic bomb survivors of Hiroshima and Nagasaki.Marshall Islanders who were inadvertently subjected to high levels of fallout during an atomic bomb test in 1954.Nuclear radiation accident victims in the 1986 Chernobyl disaster.

Genetic effects from exposure to ionizing radiation occur as a result of radiation-induced damage to the DNA molecule in which of the following? Sperm of a man Ova of a woman Somatic cells of men and women

Cancer is what type of somatic effect?

The dosimeter should be worn outside the protective lead apron at collar level because the unprotected head, neck, and lenses of the eye receive ______________ times more exposure than the protected body and trunk.

Which of the following is the annual occupational effective dose that applies to radiographers during routine operations? 

What term is used for a beneficial effect of radiation in populations continuously exposed to low levels of radiation above the background? 

The WR for x-radiation is 1, and the WT for the gonads is 0.2. If the gonads receive a D of 0.4 Gy from exposure to x-radiation, the EfD in Sv would be [BLANK-1].

Of the following, which are disadvantages of using pocket ionization chambers as personnel dosimeters? Mechanical shock causes pocket chambers to discharge A permanent legal record of personnel exposure cannot be obtained with a pocket dosimeter False readings may be obtained if the pocket dosimeter is not read each day.

For members of the general public not occupationally exposed, the NCRP recommends an annual effective dose limit of ___________ for infrequent exposures from artificial sources of ionizing radiation other than medical irradiation and natural background.

Late tissue reactions have a high probability of occurring when entrance radiation doses exceed: