Resistive magnet - Study guides, Class notes & Summaries

MRSO Safety Question and answers correctly solved 2023 Slew rate - correct answer Speed at which gradient coil turns on and off Time-varying Gradient - correct answer Induced current in a patient Magnetic Flux Lines - correct answer Travel from North to South pole permanent magnet - correct answer Can not be turned off Very inexpensive; extremely heavy Approximately 0.4T Vertical vector Resistive magnet - correct answer Can be turned on and off Costly due to coo...

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 ...

Millwright Level 4 Electrical Exam Questions And Complete Answers Fuses are circuit protection devices. what fuse component provides the HRC type fuse with the ability to interrupt currents up to 300,000 Amps without failure? A. very large contacts B. parallel fusible links C. sand filled D. series fusible links C. sand filled Elements that allow a large number of electrons to flow are known as? A. insulators B. free electrons C. conductors D. electromotive force C. conductors ...

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 ...

MRI is a modality that uses - correct answer Strong magnetic fields and radio waves to generate very detailed images of the body without the use of radiation Mri is superior to ct in imaging the - correct answer Central nervous system, ie. The evaluation of of acute stroke and metastatic disease Mri is primarily based on the - correct answer Hydrogen atom Why is mri based primarily on hydrogen atom - correct answer Water is about two thirds of the body weight and therefore there is an a...

MRI PRACTICE QUESTIONS and answers 2023What are two categories that diagnostic imaging contrast depends on? - correct answer Intrinsic and Extrinsic parameters Intrinsic parameters - correct answer -T1 recovery -T2 decay -PD -Flow These cannot be manipulated Extrinsic parameters - correct answer -TR -TE -FA -TI -b-value -echo train These can be manipulated by the MRT Factors that determine T1 and T2 relaxation times of tissue? - correct answer -the inherent energy of the tissu...

What is impedance? - Answer The resistance of a component at a given frequency A two terminal device that conducts in only one direction. - Answer Diode Insulating board containing conductive tracks for circuit connections. - Answer Printed Circuit Board An electrical device used to store electrical charge. - Answer Capacitor When did the ETA initiate renewal? - Answer 1996 all ETA certifications require the passage of the associate CET exam? - Answer False to qualify for maste...

Magnetic Resonance Imaging - correct answer Magnetic - using a magnetic field Resonance - Vibrating at a frequency Imaging - to represent visually Spin and Procession - correct answer There are many different MRI active atomic nuclei such as phosphorus, hydrogen and carbon. Hydrogen nuclei, or protons, are MRI active and common in the body. They behave like random mini bar magnets, with a north and south pole. In an MRI scanner, all the protons will point in one direction. Faraday's...

The exact middle of the bore of the magnet is termed: 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: Including electrical current in the patient's tissues Previous Play Next Rewind 10 seconds Move forward 10 seconds Unmute 0:00 / 0:15 Full screen Brainpower Read More Faraday's Law deals with induction of a current by a magn...

MRI Physics Questions and Answers 2023 Gyromatic Ratio The ratio of the magnetic moment to the moment of inertia. Larmor Frequency In a static homogenous magnetic field, all protons in a nucleus of a given type of element will rotate with exactly the same frequency. Proton/spin density Quantity of spins in tissue relative to proton density of water. Repetition Time (TR) The time period between repetitions of the excited pulse. Echo Time (TE) The time period betw...