RADIATION THERAPY EXAM A+ PASS VERIFIED | LATEST UPDATE

RADIATION THERAPY EXAM A+ PASS VERIFIED | LATEST UPDATE All isotopes of a given element have the same.. a. Number of protons b. Number of protons and neutrons c. Number of neutrons d. Binding energy - Answer- a. Number of protons A(n) ________________________ device restricts patient movement and ensures reproducibility in positioning. a. Positioning b. Immobilization c. Electronic d. Boring - Answer- b. Immobilization Is the delivery of smaller dose BID to achieved an increase in the total dose delivered in the same time overall. a. Hyperfractionation b. Hypfractionation c. Protraction Fractionation - Answer- a. Hyperfractionation Positioning aids primary goal is to: a. Verify patient's position b. Make the patient comfortable c. Hold the patient in position d. Reproduce the patient's position daily - Answer- d. Reproduce the patient's position daily The most commonly used teletherapy machine nowadays is the a. Cobalt b. LINAC c. Betatron d. Cyclotron - Answer- b. LINAC When local lymph nodes have been invaded, cancer is in stage a. 1 b. 2 c. 3 d. 4 - Answer- b. 2 The first radioactive source used in teletherapy is a. Cobalt-60 b. Cs-137 c. Radium-226 d. Strontium-90 - Answer- c. Radium-226 What unit is linear energy transfer is measured in? a. keV/ micrometer b. J/Kg c. J/keV d. J/C - Answer- a. keV/ micrometer Tumors that are well differentiated and do not metastasize or invade surrounding normal tissue are: a. Anaplastic b. Benign c. Malignant d. Necrotic - Answer- b. Benign What is the SI unit for radiation dose equivalent? a. Sievert b. Gray c. Becquerel d. Coulomb - Answer- a. Sievert Compared to the charge and mass of a proton, an electron has ______. a. the same charge and a smaller mass b. the same charge and the same mass c. an opposite charge and a smaller mass d. an opposite charge and the same mass - Answer- c. an opposite charge and a smaller mass When alpha particles are used to bombard gold foil, most of the alpha particles pass through undeflected. This result indicates that most of the volume of a gold atom consists of ____. a. deuterons (H-2) b. neutrons c. protons d. unoccupied space - Answer- d. unoccupied space An ion with 5 protons, 6 neutrons, and a charge of 3+ has an atomic number of _____. a. 5 b. 6 c. 8 d. 11 - Answer- a. 5 What is the mass number of an atom which contains 28 protons, 28 electrons, and 34 neutrons? a. 28 b. 56 c. 62 d. 90 - Answer- c. 62 Electron was discovered by___________. a. Chadwick b. Thompson c. Milliken d. Rutherford - Answer- b. Thompson An atom has a mass number of 23 and atomic number 11. The number of protons are_________ a. 11 b. 12 c. 23 d. 44 - Answer- a. 11