Spinning protons - Study guides, Class notes & Summaries

different tissues that have signals that appear similar on a mr image are described as: - ANSWER-isointense In a large main magnetic field such as those employed in MRI, the motion of a hydrogen proton has been described as wobbling like a spinning top. This motion is called: - ANSWER-Prescession Magnetic resonance imaging is derived from the process known as: - ANSWER-Nuclear magnetic resonance Once the net magnetization vector (nmv) has moved away from equilibrium, the following will ...

Define Enthalpy Correct 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. Correct Answer: D. It varies inversely as the square of the distance to the charge. As a profession...

Observational recordings - Answer - should not be altered, erased, or whited-out to make corrections - drawing a single line through it Parts of a lab report - Answer 1. title 2. abstract - contain the hypothesis - include a control and one variable 3. introduction 4. methods 5. results 6. conclusion / summation Volumetric flask - Answer - used to accurately prepare a specific volume and concentration of solution Erlenmeyer flasks - Answer used for mixing, transporting, ...

Science Olympiad Study Guide Verified And Updated Ionic Bond - answerA bond between a nonmetal and a metal. One loses or gains an electron. Sea Breeze - answerA wind blowing from cool ocean to warm land next to it. Endoplasmic Reticulum - answerA network of tubes that are responsible for carrying materials throughout the cell. There are often ribosomes scattered about it. Banolith - answerAn intrusive igneous rock at the surface of the earth that formed below the surface. Monera - answer...

fMRI/EEG QUESTIONS AND ANSWERS 2023 How does fMRI work? When activity is taking place in a particular region of the brain, the neurones require oxygen. When an person lies inside an MRI machine, all of the protons in their body try to line up with the magnetic field. Protons in oxygenated blood are very organised in their spinning. However, deoxygenated haemoglobin molecules have magnetic field gradients that alter the spinning of nearby diffusion hydrogen nuclei. This less organised spinning ...

ASVAB - General Science Exam 60 Questions with Verified Answers * Which of these reduces friction? car brakes tire tread ball bearings sandpaper - CORRECT ANSWER ball bearings * If you place bean seeds between moist paper towels and watch the stem leaves appear, you will see a demonstration of transpiration germination fertilization pollination - CORRECT ANSWER germination * Any astronomical body that revolves around a larger body is called? a nova a comet a satellite an ast...

absolute zero Lowest possible temperature, 0K, object has minimum internal energy. acceleration Change of velocity per unit time. 00:31 01:24 activity of radioactive isotope Number of nuclei of the isotope that disintegrate per second. Becquerel (Bq) Unit of radioactive activity, 1Bq = 1 disintegration per second. amplitude Maximum displacement from equilibrium of oscillating object. angular displacement Angle an object in circular motion turns ...

MRI QUESTIONS AND ANSWERS 100% CORRECT 2023 A T1 weighted image is produced using a ________ TR and a ________ TE and produces an image with ________ fat. a. long; long; bright b. short; short; dark c. long; long; dark d. long; short; bright e. short; short; bright e. short; short; bright When a 180-degree RF pulse is applied, the affected nuclei are directed to the minus Z-axis. a. true b. false a. true The attached image represents: brain matter light grey, surrounding ...

regeneration in man is limited to .. - Answer- healing of wounds satellite - Answer- any astronomical body that revolves around a larger body in chemistry, to be classified as an organic substance, it must contain - Answer- carbon atoms according to their locations on the periodic table, Argon(AR) & Neon(NE) are - Answer- noble gases which of these reduces friction? - Answer- ball bearings When a lobster grows a claw to replace one that was lost, the process is called? - Answer- r...

Magnetic Resonance Imaging (MRI) Questions and Answers 2023 True or false, Quenching is dangerous and prohibitively expensive True how is Data localization in MRI accomplished a gradient magnetic field is superimposed on a static external magnetic field. what is the primary variable in the data collection procedure during MRI the sequence True or false, Two electromagnetic coils are required to produce magnetic field gradients corresponding to the axis to be imaged ...