Free induction decay - Samenvattingen, Aantekeningen en Examens

Test Bank for Fundamentals of Physics, Extended, 12e 12th Edition by David Halliday, Robert Resnick, Jearl Walker. Full Chapters test bank are included - Chapter 1 to 44 1 Measurement 1 1.1 Measuring Things, Including Lengths 1 1.2 Time 5 1.3 Mass 6 2 Motion Along a Straight Line 13 2.1 Position, Displacement, and Average Velocity 13 2.2 Instantaneous Velocity and Speed 18 2.3 Acceleration 20 2.4 Constant Acceleration 23 2.5 Free-Fall Acceleration 28 2.6 Graphica...

RNAS C Practice Test Review 437 Questions with Verified Answers A capacitor and resisitor in parallel - CORRECT ANSWER will have same voltage across since in parallel. if in series, voltage drops would occur they can be treated together If the absolute pressure of a gas is increased from 3 atm to 4 atm at constant volume, then the absolute temperature of the gas will increase by: A. 25%. B. 33%. C. 67%. D. 75% - CORRECT ANSWER B. Assuming the validity of the Ideal-Gas law, PV = n...

The tissue characteristic that provides more tissue contrast and and pathology information is - Answer T2 effects The longitudinal component of the NMV is designated as - Answer Mz During the relaxation process the MR signal grows weaker. The signal loss is known as - Answer FID free induction decay

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 ...

Electromagnetic energy is symbolized by a sine wave that has two components of measurements, they are: - Answer-Wavelength and frequency Of the following techniques which one is applied to prevent "crosstalk" between multi-slices with little or no interslice "gap" - Answer-Interleaving The artifact known as aliasing, wrap around or fold over will always show up in what gradient direction? - Answer-Phase encoding Which of the following causes of artifacts on MR images is most commonly m...

radiowaves - ANSWER-MRI operates in the same electromagnetic energy range as ______. speed of light - ANSWER-All electromagnetic radiation travels at what speed? soft tissue contrast - ANSWER-What is the principle advantage of MRI over other medical imaging modalities? zero - ANSWER-Relative to CT, the ionizing radiation dose from MRI is ____. sensitivity - ANSWER-Which of the following terms describes how well an imaging system can detect subtle differences in anatomy? random - A...

MRI ARMRIT PHYSICS CRAM EXAM QUESTIONS WITH CORRECT ANSWERS when use of mri agent causes tissue to appear BRIGHTER what oocurs: - Ans ️️ -positive contrast relaxation centers on regions of: - Ans ️️ -increased magnetization when exposed to intense static mag fields, cultured human cells: - Ans ️️ -show no effect the main potntial for biological response in RF is: - Ans ️️ -tissue heating electric current density induced by transient mag fields is measured in" - Ans ️️ ...

Electromagnetic energy is symbolized by a sine wave that has two components of measurements, they are: - Answer Wavelength and frequency Of the following techniques which one is applied to prevent "crosstalk" between multi-slices with little or no interslice "gap" - Answer Interleaving The artifact known as aliasing, wrap around or fold over will always show up in what gradient direction? - Answer Phase encoding Which of the following causes of artifacts on MR images is most commonl...

The area in Asia that first discovered magnets is known as? - Answer Magnesia The first magnets were called magnetites because the people that lived in the area where they were found were known as? - Answer Magnetes For centuries, sailors use magnets for which of the following purposes? - Answer To navigate the seas Which of the following people named the ends of the magnet north and south poles? - Answer Petrus peregtinus de Maricourt In 1825, the British scientist, William Surgeon,...

MRI IN PRACTICE FINAL EXAM ACCOMPANEID WITH VERIFIED QUESTIONS & ANSWERS.. Resonance - CORRECT ANSWER --A phenomenon that occurs when two objects naturally vibrate at the same frequency. Results of resonance - CORRECT ANSWER --The direction of the NVM shifts as they transition to high energy. Away from Bo The angle to which the NMV moves out of alignment with the Bo is called FLIP ANGLE Effect of RF Pulse - CORRECT ANSWER --1)hydrogen protons absorbs the RF energy 2)increases the...