Free induction decay - Samenvattingen, Aantekeningen en Examens

The 2 types of enhancement media described by Lauffer, the mechanism of T1 agents is - Answer to decrease T1 relaxation time, thus emitting high signal An analogy for the decoding of the MR signal through Fourier Transform - Answer Basilar membrane processing sound Logically each line of phase encoding data is combined to allow the FT to determine the position along the y-axis. The number of phase encoding steps determines - Answer the number of pixels along the y-axis In a gradient ech...

Hydrogen Nuclei in fat and fat Differences in chemical shift at.... 1T-3.5 T parts per million majority of nuclei align.... Parallel Net magnetization vector (NVM) Excess number of H protons aligned with magnetic field Larmar equation: W? Precesional frequency Larmar equation: Y? Gyromagnetic ratio Larmar equation: B0 Magnetic strength Gyromagnetic ratio of H at 1T? 42.58 MHz/T (center frequency) Gyromagnetic ratio at 1.5T? 63.86 M...

Samenvatting van leerdoelen voor het MRI tentamen van periode 6 voor de opleiding MBRT in Haarlem

Fixed mAs/ variable kVp chart - Answer adjust kVp by multiplying by 2 (+/-) for every increment of ONE centimeter or inch of size difference Fixed KVP/ variable mAs chart - Answer adjust mAs by multiplying (+) by 2 for every 4-5 centimeter or inch size difference digital image quality factors - Answer brightness, contrast resolution, spatial resolution, distortion exposure indicator, noise brightness - Answer intensity of light coming through monitor contrast resolution - Answer how ...

The exact middle of the bore of the magnet is termed: - Answer Isocenter Without proper safety limits on the MR system exposure to the time-varying magnetic fields created by the rapid switching of the gradient could create a potential environment for: - Answer Including electrical current in the patient's tissues Faraday's Law deals with induction of a current by a magnet. true or false? - Answer true The orientation of the main magnetic field of a low field permanent magnet is verti...

Magnetic resonance imaging (MRI) Questions and Answers 100% correct MRI: Magnetic resonance imaging (MRI) is a medical imaging technique used in radiology to form pictures of the anatomy and the physiological processes of the body. MRI scanners use strong magnetic fields, magnetic field gradients, and radio waves to generate images of the organs in the body. MRI- outline: - The body is composed of multiple tissues, many of which contain hydrogen - Hydrogen= 1 proton, 1 electron; pro...

define Enthalpy - answer-total energy of a system Which of the following is true of the electric field intensity about an isolated point charge? A. It varies directly as the distance to the charge. B. It varies inversely as the distance to the charge. C. It varies directly as the square of the distance to the charge. D. It varies inversely as the square of the distance to the charge. - answer-D. It varies inversely as the square of the distance to the charge. As a professional engin...

Which of the following indicators is the most practical parameter for screening nutrition status in elderly clients? a. Weight change b. Serum albumin level c. Triceps skinfold thickness d. 24-hour dietary recall record a. Weight change Answer (a) is the correct answer because in older clients, unintentional weight loss is associate with increased risk of depression, infection, overall poor nutrition status, and mortality. Answer (b) is not the correct answer because it is less prac...

TOEFL VOCABULARY 1981 Questions with Verified Answers 2023 predicted - CORRECT ANSWER known beforehand provocative - CORRECT ANSWER arousing anger or interest; annoying tenacious - CORRECT ANSWER stubbornly unyielding benign - CORRECT ANSWER harmless capricious - CORRECT ANSWER impulsive and unpredictable diverse - CORRECT ANSWER many and different intricate - CORRECT ANSWER complicated, complex perception - CORRECT ANSWER awareness; insight reticent - CORRECT ANSWER...

NDAEB Exam Preparation Questions with correct and verified answers What two basic methods are used to acquire a digital x-ray image? - Correct answer Direct imaging(sensor) & indirect imaging (PSP)" "Advantages of Digital Radiography - Correct answer Immediate viewing of images, less radiation, no chemicals, ability to enhance images, communication with other dentists, no more lost films, remote consultation capability" "Disadvantages of Digital Radiography - Correct answer Cost, ...