Radt 142 - Study guides, Class notes & Summaries

RADT 142 Unit 1 Questions and Answers Graded A+ What is the difference between diagnostic imaging and therapeutic radiology? Diagnostic imaging focuses on creating images for diagnosis, while therapeutic radiology (radiation therapy) is used to treat medical conditions, primarily cancer, by delivering targeted radiation to tumors. How does the ALARA principle apply to radiology? The ALARA (As Low As Reasonably Achievable) principle aims to minimize radiation exposure by using the l...

RADT 142 unit 1 Exam Questions and Answers Filtration - Answer-Metal filters absorb low-energy x-rays before they reach the patient. These x-rays have little diagnostic value. Collimation - Answer-Restricts the useful x-ray beam to the part of the body to be imaged. Intensifying screens - Answer-Changes x-ray energy to light energy so that x-ray images can be better visualized. Protective apparel - Answer-Lead-impregnated material is used to make gloves and aprons worn by radiologists ...

RADT 142 Exam 1 Questions with Correct Answers Radiation Protection - Answer-Shielding, filtration, time, distance, collocation, and gonadal. Law of conversation of energy - Answer-energy cannot be create nor destroy but can be transformed from one to another Heat random disorder of molecules - Answer-transfer of heat energy by direct contact Nuclear energy - Answer-Energy contained in the center of the atoms Electromagnetic energy - Answer-A form of energy that travels through sp...

RADT 142 Exam Questions with Answers Radiation Filtration - Answer-Filters out lower energy radiation Collimation - Answer-The restriction of the size and shape of the x-ray beam in order to reduce patient exposure. Intensifying Screens - Answer-sheets of luminescent phosphor crystals bound together and mounted on a cardboard or plastic base. Radiation Injuries - Answer-Erythema, alopecia, anemia and cataract Matter is - Answer-anything that has mass and occupies space Energy is ...

RADT 142 Unit 1 Test Questions and Answers Radiation injuries - Answer-Erythema, alopecia, anemia and cataract Electrical Energy - Answer-Work that can be done when an electron moves through an electrical potential difference. Cm in 1 inch - Answer-2.54 3 Cardinal Principles of Radiation Protection - Answer-Time, distance and shielding Collimation - Answer-Restriction to certain body parts Filtration - Answer-Metal filters that absorb radiation Radiation injuries - Answer-Eryt...

RADT 142 Quiz 1 Questions with Correct Answers Radiation injuries - Answer-- erythema- skin red - alopecia- hair falling out - anemia- low blood cells - cataract- loss of vision Matter & energy - Answer-Matter- anything that takes up space and has mass four physical states: solid, liquid, gas, plasm energy- ability to do work history of x-ray - Answer-- discovered: november 8th, 1895 - Wilhelm Roentgen - used a Crookes tube accidentally found a sihloette between plate with barium...

RADT 142 Test Questions and Answers which modalities use ionizing radiation - Answer-computed tomography angiography mammography radiation therapy What is radiation? - Answer-transfer of energy through space in the form of rays, waves, or particles which modalities do not use ionizing radiation - Answer-nuclear medicine MRI ultrasound (sonography) which modality uses magnetic and radio waves - Answer-MRI Which modality uses megavolts instead of kilovolts - Answer-Radiatio...

RADT 142 unit 5 Test Questions and Answers Which scatter radiation interacts with moderate x-rays, outer shell electrons, and photon changes direction? - Answer-Compton/modified Which type of scatter radiation is responsible for the majority of scatter radiation reaching the image receptor (IR)? - Answer-compton/modified Compton/modified - Answer-photon is directed back towards the source (backscatter). - majority of scatter radiation reaching IR - occupational exposure during fluo...

RADT 142 Review Test Questions with Answers What is the smallest subdivision of a compound that maintains the same characteristics of that compound? - Answer-molecules What is the smallest portion of an element? - Answer-atom Two or more different atoms (elements)? - Answer-compound and molecule Two or more same atoms - Answer-Molecules What is a combination of different substances? - Answer-mixture what is the difference between x-rays and gamma rays? - Answer-they are the same ...

RADT 142 Essential Concepts Test Questions and Answers Newton's 1st Law of Motion - Answer-(law of inertia) a body will remain at rest or will continue to move with constant velocity in a straight line unless acted on by an external force Newton's 2nd Law of Motion - Answer-the force (F) that acts on an object is equal to the mass (m) of the object multiplied by the acceleration (a) produced Newton's 3rd Law of Motion - Answer-Action/reaction - for every action, there is an equal and o...