Low contrast resolution - Study guides, Class notes & Summaries

Adult Echocardiography Practice Exam #1 Questions And Answers Inferior vena cava, superior vena cava, & hepatic veins demonstrate systolic flow reversal. What type of valve abnormality would you expect to see? A. mild mitral regurgitation B. severe mitral regurgitation C. mild tricuspid regurgitation D. severe tricuspid regurgitation - ANS D When estimating pulmonary artery pressure, the most reliable non-invasive method is: A. tricuspid valve regurgitant jet velocity B. pulmonic valv...

_______ controls quantity of the x-ray beam, and the number of x-ray photons contained in the beam - mAs _________ is the quality, and alters the amount of photons in the beam and penetrating the ability of the beam - kVp A ____% increase in kVp has the same effect on optical density as doubling the mAs. - 15% A compensating filter is used to create _____ optical density with a body part of _____ thickness. - Uniform, non-uniform A factor that affects the amount of scatter produced is a....

ARDMS SPI Practice Test (2024) || With Questions & All Correct Answers (Rated A+) ARDMS SPI Practice Test (2024) || With Questions & All Correct Answers (Rated A+) A slice-thickness phantom measures which plane of the transducer? a. the scanning plane b. The elevation plane c. The azimuthal plane d. The temporal plane - ANSWER - b. Which of the following is not a technique that will reduce grating lobes? a. Tissue harmonic imaging b. Apodization c. Subdicing d. Edge enhanceme...

A nanometer is defined as: A. 10 B. 10 C. 10 D. 10 -3 -6 -9 -12 A. D. C. Correct! B. 5/1/22, 6:13 PM M3: Module 3 Exam - Requires Respondus LockDown Browser + Webcam: Essential Microbiology with Lab-2021-Bowman Ques 10 / 10 pts tion 2 Your Answer: Resolution and contrast are two critical factors that influence your ability to see an object. Explain each. Resolution is the distance between two objects in which the objects can still be seen as separate. A poor resulution will re...

Chapter 8: Medical Imaging Equipment 1. Which component of the x-ray tube produces the x-rays? A. Cathode B. Anode C. Glass envelope D. Collimator Answer: B Rationale: The anode (B) is the component of the x-ray tube where electrons from the cathode strike, producing x-rays through the process of bremsstrahlung and characteristic interactions. DIF: Knowledge TOP: X-ray Tube Components MSC: Radiographic Equipment 2. The primary function of the cathode in the x-ray tube is to: A. Pro...

ESP X-Zone Practice Test Questions And Answers Which of these factors has the greatest influence on pulse repetition period? a. thickness of PZT crystal b. displays dynamic range c. display depth d. impedance of the medium e. attenuation of the sound beam c. display depth A sound wave with a frequency of 5 MHz is traveling in soft tissue. What is the wavelength of this sound? a. 0.3mm b. 5mm c. 0.5mm d. 0.3cm e. 0.5m a. 0.3mm What is the accuracy of reflector depth posi...

____ is defined as specific area or location where Doppler shift info is being obtained. A. spectral broadening B. nyquist limit C. sample volume D. spectral window -answer- C. sample volume Spatial resolution is: A. the minimum reflector separation required to produce separate echos. B. highest with linear phased arrays. C. the weakest reflected signal the transducer can receive D. another term for slice thickness resolution -answer- A. the minumum reflector separation required to pr...

What is remote sensing? - Knowledge and techniques used to determine the properties of targets without direct contact between the measuring device and these targets What is the only energy that can be transmitted through a vacuum or a medium? - Electromagnetic radiation What is resolution? - Characteristics of the sensor/imagery that determine the type of application What are the 4 types of resolution? - Spatial, spectral, temporal, radiometric What is spatial resolution? - Defined b...

CT 249 Final exam Questions with 100% Correct Answers | Verified | Updated Which of the following controls brightness in the CT image? a) contrast resolution b) window width c) spatial resolution d) window level - answerd) window level 350 Hounsfield units (HU) can be described as a wide window width in CT. True False - answerFalse Which of the following describes the CT post-processing technique known as "windowing"? a) Image compression b) Image smoothing c) Image enhancement d...

Which can be attributed to the uncoupling effect? - correct answers Even when the mAs or kVp setting is too high, a good image results Which is an imaging challenge that depends on contrast resolution? - correct answers Distinguishing between the white matter and gray matter of the brain The ability to differentiate a structure that varies only slightly is density from its surroundings? - correct answers low contrast resolution An image of a water phantom displays a range of pixel value...