Contrast digital - Study guides, Class notes & Summaries

Dental Radiography (2023/ 2024 Update) Guide with verified Answers| 100% Correct Q: High contrast Dental image that has very dark and very light areas Q: Low contrast Answer: A dental image that does not have very dark and very light areas but instead has many gray areas Q: Short scale contrast (high contrast) Answer: Radiograph with only 2 densities, black and white Occurs with machines functioning at low kVP Q: Long scale contrast (low contrast) Answ...

TEST BANK 3RD EDITION DIGITIAL RADIOGRAGHY & PACS CHAPTER 03 QUESTIONS & ANSWERS 2023 Chapter 03: Digital Radiographic Image Processing and Manipulation Carter: Digital Radiography and PACS, 3rd Edition MULTIPLE CHOICE 1. Failure of the reader to find the collimation edges of an a. will result in image cutoff. b. may cause the image to be too bright or too dark. c. will eliminate all scatter. d. will have no effect on the resultant image. ANS: B OBJ: Describe the formati...

Chapter 03: Radiation Characteristics Iannucci: Dental Radiography, 5th Edition MULTIPLE CHOICE 1. In dental radiography, the term ________ is used to describe the mean energy or penetrating ability of the x-ray beam. a. quality b. quantity c. intensity d. wavelength ANS: A Quality is used to describe the mean energy or penetrating ability of the x-ray beam. Quantity refers to the number of x-rays produced. Intensity is defined as the product of the quantity and quality per...

LRA 221 Final Exam Questions and Verified Answers - (2024/ 2025 Update) 100% Correct Review 182 Q: Aliasing occurs when the sampling frequency is not greater than twice the frequency of the input signal. a. True b. False Answer: b. False Q: In digital projection radiography, what process is used to normalize an image that has been taken with too great of an exposure? a. High-pass filtering b. Low-pass filtering c. Automatic rescaling d. Aliasing Answer: c. Automatic res...

What are the imaging modalities that use ionizing radiation? - correct answer 1. Radiographs (x-rays, conventional films, plain films) 2. Computed tomography (CT) 3. Nuclear medicine (NM) What are the imaging modalities that do not use ionizing radiation? - correct answer 1. Magnetic resonance imaging (uses magnet and radio waves) 2. ultrasound (uses sound waves) The birth of radiology start...

Relias - Fetal Heart Monitoring Questions and Answers 2023 uterine blood supply - uterine arteries deliver oxygenated blood to spiral arteries which bring oxygen rich blood to intervillous space of placenta that has fetal capillaries - fetal capillaries carry the O2 rich blood to umbilical VEIN that goes to fetus -in contrast, the umbilical ARTERIES return waste products to that intervillous space that go into mother's venous system Potential issues that negatively affect fetal o...

Edelman SPI review questions & Answers 2023. ______ is the distance covered by one cycle. a) pulse length b) wavelength c) cycle distance d) cycle duration ______ is the time to complete one cycle a) pulse duration b) pulse period c) period d) duration period ________ is a redirection of an ultrasound bean in many directions as a result of a rough boundary between two media: a) refraction b) Rayleigh Scattering c) scattering d) reflection _________ resolution is...

Which of the following medications is administered to a patient during an allergic reaction? A. Adenocard B. Intropin C. Lasix D. Decadron - D. Decadron What is the correct term used to describe an intravenous injection of a concentrated volume of contrast media? A. Bolus B. Infusion C. Extravasation D. Luminal - A. Bolus Identify the position that will place the positive contrast agent in the body of the stomach and pylorus during a double contrast upper GI exam A. Recumbent LPO B. ...

First computers Correct Answer-Mechanical calculators- Perform simple additions and subtractions, operations performed on a crank, numbers stored on a rotor - mechanical switches: Konrad Zuse's Z1, electronically controlled, program was on a punch tape fed into the computer, had to be sequential, and manual. Z3 turned to eletronical, but otherwise still similar to Z1 - vacuum tubes used for logic circuitry - limited CPU and memory - very large and expensive - Most were very heavy, ran...

CCI RVS Exam (2024/ 2025) 200+ Questions and Verified Answers| 100% Correct- Grade A Q: When listening with continuous wave Doppler over a sonic lesion, you will hear high frequency or low frequency sound? Answer: High frequency Q: A normal PORH response is a major velocity increase of what percent increase in mean velocity Answer: >100% Q: What are falsely elevated less frequently than tibial ankle pressures? Answer: toe pressures Q: How can a PTFE ...