What is x ray attenuation - Study guides, Class notes & Summaries

ATLS EXAM (QUESTIONS AND ANSWERS A+ GRADED 100% VERIFIED) True or false? Although the mechanism of injury may be similar to those for the younger population, data shows increased mortality with similar severity of injury in older adults. ANS: True In the elderly population, what is decreased physiological reserve? ANS: aging is characterized by impaired adaptive and homeostatic mechanisms that caused an increased susceptibility to the stress of injury. Insults tolerated by the younge...

Low photon energy and high atomic number Combination of photon energy & tissue atomic # results in the highest probability of PE effect *Low photon energy and low atomic number *Low photon energy and high atomic number *High photon energy and low atomic number *High photon energy and high atomic number Step down voltage and step up current How does the filament transformer of the x-ray machine change the shape of electrical power? *Step up voltage and step down current *Step down ...

What type of current is required for proper operation of the x-ray tube? - Direct Electromagnetic radiation travels: - In waves along a straight path Frequency is defined as: - The number of waves passing a point per unit time Wavelength is defined as the distance from: - Peak to peak of the wave Wavelength and frequency are: - Inversely proportional to each other The x-ray beam changes as it travels through the patient by a process called: - Attenuation The intensity of radiation is inver...

CT Registry Review (MIC) Questions and Answers Rated 100% In order for an x-ray photon to be measured it must: 1. enter the detector chamber 2. be absorbed by the detector material 3. be converted to a measurable event *ANS* 1,2,3 Which system component converts the projection attenuation data into the proper digital form for the array processor? *ANS* analog-to-digital converter Which of the following is NOT a function of a PACS system? a. reconstruction of the image from the raw d...

CT Registry Review (MIC) Exam Test with complete solutions In order for an x-ray photon to be measured it must: Which system component converts the projection attenuation data into the proper digital form for the array processor? Which of the following is NOT a function of a PACS system? Which of the following is not part of the CT tube? Which of the following is FALSE regarding CT systems? Xrays are used in CT because: Most of the commands from the technologists are received...

HESI EXIT EXAM STUDY VERIFIED QUESTIONS AND ANSWERS 2023 LATEST UPDATE GRADED A A radiographer prepares to perform an AP projection of the distal femur on a patient with a suspected femoral fracture. Which represents the best approach for positioning both the patient and the x-ray tube? A. Rotate the leg 15 degrees medially; place the cathode end of the tube toward the foot. B. Rotate the leg 15 degrees medially; place the anode end of the tube toward the foot. C. Do not rotate the l...

IRRSP Practice Test graded A+ TO PASS The activity of a radioactive source - correct answer The term "Curie" defines: a. The exposure of a radioactive source b. The intensity of a radioactive source c. The activity of a radioactive source d. The output of a radioactive source Reddening of the skin, loss of hair, blistering - correct answer Which of the following are symptoms of an acute extremity overexposure? a. Nausea, vomiting, diarrhea b. Fatigue, nausea, reddening of the skin c...

The word Tomo is tomography means - correct answers To cut What is the Z-axis - correct answers the thickness of a cross-sectional slice. The degree to which an x-ray beam is reduced by an object is referred to as - correct answers Attenuation The amount of the x-ray beam that is absorbed per unit thickness of the absorber - correct answers Linear Attenuation difference in linear attenuation coefficient is responsible for - correct answers Image Contrast These are the two dimensio...

Test Bank for Bontragers Textbook of Radiographic Positioning and Related Anatomy 9th Edition Lampignano Test Bank for Bontragers Textbook of Radiographic Positioning and Related Anatomy 9th Edition Lampignano Test Bank for Bontragers Textbook of Radiographic Positioning and Related Anatomy 9th Edition Lampignano Test Bank for Bontragers Textbook of Radiographic Positioning and Related Anatomy 9th Edition Lampignano Test Bank for Bontragers Textbook of Radiographic Positioning and Related Anatom...

data acquisition correct answers the measurement of the attenuation that occurs along each path through the patient from the x-ray tube to the detector data reconstruction correct answers computerized processing of the transmission measurements into the CT image multidimensional image display correct answers display of the reconstructed grayscale image in two-dimensional and / or 3-D format ; representation of the attenuation that occurred across the scanned volume of tissue image archi...

Fluoroscopy ARRT Exam Study guide Questions With Accurate Answers. What mag modes are available? - answerif you have a 16" II, you can have 12,9,6, and 4.5 " Compton effect - answerhits the outer electron, incomplete transfer of energy, electron released and a low energy xray is deflected photoelectric absorption - answerx-ray totally absorbed by inner shell electron, x-ray overcomes binding energy and knock out the electron and an outer shell electron takes it place. When the outer ele...