Radiation Dosimetry

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1.  Marie Curie's Professor carried in an inside pocket of his coat a glass vial containing radium-226; shortly thereafter, the first radiation burn was documented. This skin burn was caused by...

        The potent 4.8 MeV a particles emitted by this isotope

        The gamma rays accompanying  a decay

        Cerenkov Radiation

        0.005 keV X-rays

2.  Irradiation of the juvenile thyroid has been associated with an increased risk of developing...:

        Thyroid carcinoma and parathyroid adenomas

        Hypothyroidism

        Hyperthyroidism

        Aplastic anemia

3.  The ALARA Concept, implemented in the late 1970's has contributed to... :

        A reduction in the cost of radiopharmaceuticals

        An overall reduction in dose to radiation workers

        Increased compliance with continuing education requirements

        Increased availability of new radiopharmaceuticals

4.   In any given year, a radiation worker may receive a whole body dose of...

        0.5 R

        1 R     

        5 R

        10 R

        50 R

5.      In any given year, family members of a radiation worker may receive a whole body dose of...:

        0.1 R

        0.5 R

        5 R

        10R

        50R

6.   Effects recognized as being caused by ionizing radiation include all of the following except...:

        Induction of malignant melanoma

        Cataract induction

        Dermatitis and hair loss

        Carcinogenesis

        Genetic effects
         

7.   For Tc-99m there are approximately 20 contributors to the internal radiation dose. Included are all of these except...:

        gamma rays

        b- particles

        Auger and internal conversion electrons

        characteristic X-rays
 

8.   The mathematical equation for internal dosimetry includes all of the following except...:

        Fraction of all disintegrations producing the particles or photons being evaluated

        Effective half-life

        Energy of the particles or photons being evaluated

        Size and shape of the organ
 

9.    Residents of Denver have a background double that of residents of Chicago because: 

        They are 1 mile closer to the sun

         There is more radioactivity in the soil in Denver

         The air is less dense in Denver

        b and c only

        All of the above

10.    Penetrating radiations include...: 

        a, b, and g

         a, b, and g and X-rays

         a, b, Auger electrons and conversion electrons

        none of the above

11.  Which of the following contributes the smallest patient radiation dose?:

        Chest X-ray (Anterior)

        Chest X-ray (Lateral)

        Lumbar spine X-ray

        CT Scan
 

12.  Which of the following contributes the largest patient radiation dose?:

        Chest X-ray (Anterior)

        Chest X-ray (Lateral)

        Lumbar spine X-ray

        CT Scan

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