Phase coherence - Study guides, Class notes & Summaries

2 basic montages used during electrode screening - Answer- 1) numeric order bipolar 2) referential imaging that measures brain synchronicity - Answer- coherence imaging type of software helpful for quantifying seizures in ICU/EEG - Answer- trending 1st consideration when guarding against skin breakdown - Answer- electrode type main MEG imaging techniques - Answer- -single current dipole (ECD) -current density/distribution (MR-FOCUSS) -beamformer (spatial filter) MRI safe electr...

For the following spin-echo protocol: FOV: 320/ TR:500/ TE:25/ SliceThick.:5mm/ Slice Gap:1mm/ Slice.#:9/ NEX:4, Matrix:192 Decreasing TE will: a. Decrease the # of allowable slices. b. Increase the # of allowable slices. c. Increase scan time. d. Decrease scan time. - Answer-b. Increase the # of allowable slices. A linear relationship between frequency and position is superimposed on Bo by the Gp. The H protons' relative precessional frequencies determine: a. Phase coherence. b. Phas...

ENC1501 Assignment 3 (COMPLETE ANSWERS) 2024 ;100% TRUSTED workings, explanations and solutions. .. Question 1 Complete the following sentences by filling in the correct word or concept. 1.1 __________is the meaning connected to a word figuratively. 1.2 ___________ model is a guideline of how we will carry out a lesson. 1.3 __________are the different types of literature, which fulfil different requirements. 1.4 Process writing is often used for ________ writing as it offers an effective way of ...

RADIOFREQUENCY (RF) - ELECTROMAGNETIC RADIATION LOWER IN ENERGY THAN INFRARED. THE RF USED IN MRI IS IN THE FORM OF A BURST OF RF ENERGY (PULSE) I THE 10 MHZ TO 100MHZ RANGE RF PULS, DELIVERED TO THE PATIENT BY RF TRANSMITTER. THE RF FREQUENCY, AT THE LARMOR FREQUENCY, RESULTS IN ROTATION OF THE NET MAGNETIZATION VECTRO AND PHASE COHERENCE OF THE NUCLEAR SPINS. AN RF COIL IS USED FOR TRANSMITTING AND RECEIVING MRI SIGNALS (RF). FRINGE FIELDS - WEAKER MAGNETIC FIELDS THAT ARE AWAY FROM THE I...

what does the word LASER stand for? light amplification stimulated emission of radiation what are the four characteristics of a wave? wavelength, frequency, velocity, amplitude wavelength distance between 2 peaks of the wave measured in nanometers frequency number of wave cycles per second; measured in hertz velocity speed of light amplitude height of the wave what is the common standard of measure used for a wavelength? nanometers TestTrackers: Unlock Your Exam Potential! |...

True Like all theories, "psychodynamic theory" is a social construction. Drive theory, ego psychology, object relations, self-psychology What are the concepts which represent the 4 classical schools of psychodynamic theory? Phase 2- "topographical perspective," the mind consists of 3 systems (unconscious, preconscious, and conscious). Best narrative description of the visual representation of "the iceberg floating in the ocean analogy which serves to increase the understand...

ARMRIT Practice Test for MRI Technologists with Complete Solutions 2024 Magnetism can be defined as the ability of certain substances to attract: - Correct Answer Iron, Cobalt, Nickel The components of the Gyro-magnetic ratio are: - Correct Answer Magnetic moment to angular momentum Which type of electromagnetic coils produce smaller magnetic field which allow spatial localization to be performed? - Correct Answer Gradient coils Which type of MRI magnet requires cryogen to cool magneti...

BICSI ITSMM Exam Questions & Answers 2024 What is inductace? - ANSWER-1) The property of an electrical force field built around a conductor when current flows through it. 2) The resistance to change in current. What is impedance? - ANSWER-The total opposition (resistance and reactance [capacitance and inductance]) that a circuit, cable or component offers to the flow of alternating current (ac) at a given frequency. It is measured in ohms. What is hearing range for humans? - ANSWER-20...

What are the 2 factors that affect image contrast in diagnostic imaging? - correct answer Intrinsic contrast parameters: are those that cannot be changed because they are inherent to the body's tissues. Ex) Bone density Extrinsic contrast parameters: are those that can be changed because they are under our control. Ex) TR What are examples of intrinsic factors? - correct answer T1 recovery time ...

Live Sound Final Exam Updated Phase coherence - dealing with maintaining phase consistency throughout your system. You can achieve this through minimal phase shift, mic choice, correct placement (Preventative). need to know how to calculate power formula, speakers in parallel and in series, need to know how to match that up to an amp, how to calculate out speaker delay. - A speaker's polar plot will typically show... - the vertical and horizontal dispersion of a speaker Dipole Spea...