MEDICINE
RADIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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optimizing image quality.
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an algorithm for limiting patient exposure.
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reducing the costs of radiographic examinations.
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reducing patient exposure to as low as is reasonably achievable.
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a legal requirement to optimize occupational exposure in dental radiology.
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Detailed explanation-1: -ALARA stands for “as low as reasonably achievable”. ALARA means avoiding exposure to radiation that does not have a direct benefit to you, even if the dose is small. To do this, you can use three basic protective measures in radiation safety : time, distance, and shielding.
Detailed explanation-2: -ALARA stands for As Low As Reasonable Achievable and means making every reasonable effort to maintain exposures to radiation as far below the dose limits as is practical: 1.
Detailed explanation-3: -ALARA (As Low As Reasonably Achievable) regulatory guidelines were initially developed to protect workers from unnecessary exposure to nuclear radiation. Any medical professional who works with ionizing radiation should be familiar with the acronym ALARA.
Detailed explanation-4: -Distance Increasing the distance between you and the radiation source you will reduce exposure by the square of the distance. Doubling the distance between your body and the radiation source will divide the radiation exposure by a factor of 4.
Detailed explanation-5: -The ALARA levels are derived from the NRC’s dose limits in 10 CFR 20 which can also be found in the table NRC Dose Limits. Even though radioactive materials and x-ray producing equipment are regulated by different entities, ALARA levels for both exposures have been derived using the NRC limits.