Lead collimator - Study guides, Class notes & Summaries

IEM MIDTERM EXAM CORRECTLY ANSWERED 2024. X-RAY TUBE - correct answer -Electronic vacuum tube that contains two electrodes: the cathode and anode (a diode), which are necessary for the production of x-ray beam -the most important part of the x-ray, at the same time it is also the most vulnerable. cathode and anode - correct answer two electrodes Coolidge (Cathode ray) tube - correct answer - the first x-ray tube used 30 to 50 cm long and 20 cm in diameter - correct answer Modern x-r...

Nuclides with the same atomic number but different numbers of neutrons are called? -ANSWER Isotopes Two nuclides with the same atomic numbers are called? -ANSWER Isobars Two nuclides with the same number of neutrons but different atomic numbers are called? -ANSWER Isotones What is a radionuclide? -ANSWER A nuclide that emits particular or photon energy to achieve a more stable energy state Another name for a helium ion containing two protons and two neutrons is? -ANSWER an alpha part...

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...

Dental Assisting Radiology MN Licensure Questions and Answers 100% Pass This is a device used to reduce the amount of scatter radiation that reaches an extraoral film during exposure. grid Identify the error that causes teeth to appear foreshortened on a radiograph. excessive vertical angle Identify the benefit of using a long-cone (16 inch) position-indicating device, versus a short-cone (8inch) position indicating device. less magnification What is the angulation of the ce...

Rad Protection Patient Protection Test Questions with Answers The image intensifier acts as a primary barrier and is required to be equivalent to what amount of lead? - Answer-2mm of lead equivalent. What is the required minimal source-to-end of collimator assembly distance necessary for mobile fluoroscopy? - Answer-12 inches. List two types of compensating filters. - Answer-Wedge and trough filters. What is the purpose of the spacer cone or collimator extension attached to the collim...

Dental Assisting Radiology MN Licensure Exam Questions and Answers 100% Pass This is a device used to reduce the amount of scatter radiation that reaches an extraoral film during exposure. - Correct Answer ️️ -grid Identify the error that causes teeth to appear foreshortened on a radiograph. - Correct Answer ️️ -excessive vertical angle Identify the benefit of using a long-cone (16 inch) position-indicating device, versus a short-cone (8inch) position indicating device. - Correct ...

SPRINGER EASY MOCK - NMTCB (EASY 1) QUESTIONS WITH RATIONALE The venous blood returning via the superior vena cava (SVC) and inferior vena cava (IVC) enters the heart at the: D - Right atrium (RA) The mechanism by which the epithelial cells of the thyroid concentrate iodide is termed: C - Active transport Flood field nonuniformity in reconstructed SPECT images can result in: B - Ring artifacts Tc-99m Sulfur colloid can be used in all of the following types of imaging EXC...

How far away must the operator stand from the xray tube if not covered with lead? - ANSWERS-3 meters 90% of man made radiation to the population is related to? - ANSWERS-Medical Radiography and Dental For each peak xray voltage, what lead equivalent is required? 100kV or less (o-100) Between 101kV-149kV 150kV or greater (150+) - ANSWERS-0-100kV = 0.25mm of lead Greater than 100kV but less then 150kV = 0.35mm of lead 150kV or greater = 0.50mm of lead What protective equipment ...

Dental Radiology Practice Test Questions with Correct Answers Dental Radiography - Answer-the production of radiographs of the teeth and adjacent structures by the exposure of an image recerptor to x-rays Dental Radiographer - Answer-any person who positions, exposes, and processes dental x-ray image receptors Collimator - Answer-lead plate with a center hole that fits direcctly over the opening of the metal housing where x-rays exit X-ray Tube - Answer-heart of the x-ray generating sy...

A dizzy feeling associated with sitting or standing after a prolonged period of bed rest is caused by: a. Vertigo b. Decubitus ulcer c. Postural hypotension d. Decubitus seizure - postural hypotension A patient showing signs of shock should be placed in the Trendelenberg position to: a. Increase oxygen to the lungs b. Increase circulating blood volume c. Increase blood flow to the heart d. Relax venous spasms - increase blood flow to the heart A persistently high arterial blood pressur...