Primary x ray beam Study guides, Class notes & Summaries

LRA 110 Final Exam Questions and Answers Rated A+ x rays were discovered ? November 8, 1895 by Wilhelm Conrad Roentgen the first radiograph produced by Dr. Roentgen was of His wife's hand radiation burn resulting from excessive exposure to xrays common among early patients and operators of xray equipment a delayed reaction to excesssive xray exposure acute radiodermatitis Watt is the unit of measure of power energy in a stored state is potential energy energy being expended? potential ene...

The most sensitive cells to ionizing radiation are A. bone B. muscle C. nerve D. reproductive correct answer: D. reproductive The best type of x-ray to penetrate body tissue is A. low frequencies B. high frequencies, short wavelength C. long wavelength D. soft rays, long wavelength correct answer: B. high frequencies, short wavelength Before seating the dental patient, it is necessary to cover which of the following items with disposable plastic wrap? A. X-ray exposure con...

ARRT Radiography Exam (Mosby Review) QUESTIONS AND ANSWER 2024/2025 FULLY SOLVED 100% Ionizing Radiation - ANSWER radiation that is able to remove electrons from an atom through ionization Somatic effects - ANSWER refers to the effects of radiation to the body being irradiated Genetic Effects - ANSWER refers to effects of radiation to a germ cell's genetic code; effects the next generation Primary radiation - ANSWER radiation exiting the x-ray tube Remnant radiation (or Exit Radiation) ...

LMRT ARRT EXAM QUESTIONS AND ANSWERS 100% PASS Roentgen discovered x-rays while working with a _____ tube? Crookes An "electron cloud" surrounding the filament of the cathode is referred to as a Space charge Free electrons of X-ray production come from the Filament The creation of the space charge in the X-ray tube produces: thermionic emission The majority of photons in the X-ray beam are created by which process? Bremsstrahlung interactions More than 99% of the energy of the electron st...

What is the frequency of ACR Accredidation? CORRECT ANSWER Every 3 yrs. The material used for the exit port of the mammography tube us necessary because CORRECT ANSWER Regular glass would harden the emerging beam The intensity of the x-ray beam from the cathode side of the tube is generally higher because CORRECT ANSWER the heel effect causes variation in the intensity of the x-ray beam The design of the lip of the compression paddle (height + angle along the chest wall) affects all of ...

With increasing levels of beam filtration where will the greatest dose savings be realized? A. in the initial layers of tissue struck by the beam B. in tissues at the midline C. in tissues at the exit surface of the patient D. at the level of the patient's gonads correct answer: A. in the initial layers of tissue struck by the beam Which of the following barium/air filled anatomic structures is best demonstrated in the LAO position? A. ileocecal valve B. sigmoid colon C. splenic flex...

Which of the following will decrease the amount of scatter radiation produced? a. increasing the x-ray field size b. decreasing the x-ray field size c. increasing the grid ratio d. decreasing the grid ratio correct answer: b. decreasing the x-ray field size Which of the following is not a type of beam restrictor? a. aperture diaphragm b. positive beam-limiting device c. cylinder d. lead shield correct answer: d. lead shield As collimation decreases, the quantity of scatter ra...

ARRT Radiography Exam (Mosby Review) Questions and Answers 100% Pass Ionizing Radiation radiation that is able to remove electrons from an atom through ionization Somatic effects refers to the effects of radiation to the body being irradiated Genetic Effects refers to effects of radiation to a germ cell's genetic code; effects the next generation Primary radiation radiation exiting the x-ray tube Remnant radiation (or Exit Radiation) x-rays the leave the patient and strike the image recepto...

Ionizing Radiation - radiation that is able to remove electrons from an atom through ionization Somatic effects - refers to the effects of radiation to the body being irradiated Genetic Effects - refers to effects of radiation to a germ cell's genetic code; effects the next generation Primary radiation - radiation exiting the x-ray tube Remnant radiation (or Exit Radiation) - x-rays the leave the patient and strike the image receptor attenuation - absorption and scatter of the x-...

TRUE OR FALSE: - the anode is the positive side of the x-ray tube - True TRUE OR FALSE: - the entire cathode and anode assemblies are enclosed within a glass envelope. - False TRUE OR FALSE: - in radiology, the terms actual focal spot and effective focal spot reference the same area of the x-ray tube. - False TRUE OR FALSE: - X-rays are one form of electromagnetic radiation - True TRUE OR FALSE: - the velocity of electromagnetic energy is equal to the speed of sound - False TRUE OR FA...