Time varying gradient - Study guides, Class notes & Summaries

ARMRIT Exam 2 |Revised Study Guide| Graded A+ 2DFT *Ans* When selecting only one slice at a time during a pulse sequence, which method for providing spatial localization is employed? Higher relaxation rates *Ans* Tissues that have low (short) relaxation times have: Increase resolution *Ans* For the following spin-echo protocol: FOV: 320 / TR: 500 / TE: 25 / SliceThick: 5mm / Slice Gap: 1mm/ Slice#: 9 / NEX: 4 / Matrix: 192 -- Increasing Matrix will: Toxicity *Ans* Combining a metal io...

Test Bank for Huether and McCance's Understanding Pathophysiology, Canadian Edition, 2nd Edition by Kelly Power, Stephanie Zettel, , Mohamed Toufic El-Hussein Table of Contents PART ONE: BASIC CONCEPTS OF PATHOPHYSIOLOGY Unit 1: The Cell 1. Cellular Biology 2. Genes and Genetic Diseases 3. Epigenetics and Disease 4. Altered Cellular and Tissue Biology 5. Fluids and Electrolytes, Acids and Bases Unit 2: Mechanisms of Self-Defense 6. Innate Immunity: Inflammation and Wound Healing 7...

MRSO Safety Exam Questions and Answers (Graded A)MRSO Safety Exam Questions and Answers (Graded A)MRSO Safety Exam Questions and Answers (Graded A) Slew rate - ANSWER-Speed at which gradient coil turns on and off Time-varying Gradient - ANSWER-Induced current in a patient B-sub zero - ANSWER-The unit used to describe the static magnetic field Deflection - ANSWER-The amount of attraction an object has to the static magnetic field

Which of the following is true if we increase the field of view from 200mm to 400mm? a. We reduce patient heating b. We use a stronger time-varying gradient magnetic field c. We use a weak time-varying gradient magnetic field d. We increase the patient heating - Answer c. We use a weak time-varying magnetic field

Exposure to Static Magnetic Field of >4T - Answer Requires approval. Time Varying Gradient Field Concerns - Answer Electrical induction due to principle of Faraday's Law. Cardiac Fibrilation (not reported). Diaphragm Spasm - cause difficulty breathing.

MRSO PREP Exam Questions with 100% Correct Answers 2024 Zero Boil-Off - answerSystem that reduces/eliminates the need to recharge Helium in a magnet. Quench - answerQuickly eliminating the magnetic field. Not immediate, takes 3 to 5 minutes to completely eliminate magnetic field. Loud Noise as Helium rushes out of Quench Vent. Can cause crack in the wire (very costly to repair/replace). Ohm's Law - answerResistance that is equal to Voltage divided by the amperage in a wire. V=IR Use...

MRSO FINAL EXAM WITH QUESTIONS AND ANSWERS. How do magnetic flux lines travel? A. North to South B. South to North C. East to West D. West to East - Answer A North to South Which of the following can be potential safety concerns to a patient in the static magnetic field? A. Electrically conductive materials B. Ferrous objects C. Magnetic objects D. All of the choices. - Answer D. All of the choices An object that retains its magnetic field when exiting the static magnetic field is ...

ARMRIT Review Test Questions and Answers 100% CorrectARMRIT Review Test Questions and Answers 100% CorrectARMRIT Review Test Questions and Answers 100% CorrectARMRIT Review Test Questions and Answers 100% CorrectThe 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 cu...

MRSO Safety Questions with Complete Solutions 100% Verified Slew rate - Correct Answers Speed at which gradient coil turns on and off Time-varying Gradient - Correct Answers Induced current in a patient Magnetic Flux Lines - Correct Answers Travel from North to South pole permanent magnet - Correct Answers Can not be turned off Very inexpensive; extremely heavy Approximately 0.4T Vertical vector Resistive magnet - Correct Answers Can be turned on and off Costly due to cooling A...

MRSO Exam - Questions and Answers (Complete Solutions) Which of the following are burn risks associated with an MRI if precautions are not taken? A. ECG B. Pulse oximeter C. Blood pressure D. ECG and pulse oximeter If a patient with a GFR of 15 has an MR ankle scan ordered with and without contrast and the technologist administers the contrast as ordered, who is at fault in the eyes of the court? A. Technologist B. Radiologist C. Ordering physician D. Patient What does gadolinium contrast medi...

MRSO FINAL EXAM WITH QUESTIONS AND ANSWERS. How do magnetic flux lines travel? A. North to South B. South to North C. East to West D. West to East - Answer A North to South Which of the following can be potential safety concerns to a patient in the static magnetic field? A. Electrically conductive materials B. Ferrous objects C. Magnetic objects D. All of the choices. - Answer D. All of the choices An object that retains its magnetic field when exiting the static magnetic field is ...