Larmor frequency Samenvattingen, Aantekeningen en Examens

The T1 process is also known as: - Answer Spin Lattice Which type of electromagnetic coils produce smaller magnetic field which allow spatial localization to be performed? - Answer Gradient coils The component Mxy is most associated with: - Answer Transverse to Bo; T2 relaxation; Transverse magnetization The resonance frequency of any substance in a magnetic field can be calculated by employing the: - Answer Larmor equation Once the patient's area of interest is placed in the main m...

different tissues that have signals that appear similar on a mr image are described as: - Answerisointense 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 occur...

Magnetism can be defined as the ability of certain substances to attract: - Answer-Iron, Cobalt, Nickel The components of the Gyro-magnetic ratio are: - Answer-Magnetic moment to angular momentum Which type of electromagnetic coils produce smaller magnetic field which allow spatial localization to be performed? - Answer-Gradient coils Which type of MRI magnet requires cryogen to cool magnetic coils to 4 degrees Kelvin? - AnswerSuperconductive T2 is the measurement of time for the transverse...

Critical temperature of niobium-titanium conductor wires - ANSWER-10K (-442F) Liquid Helium temperature to cool wires - ANSWER-4K Translational force is measured in - ANSWER-T/m Translational force calculation - ANSWER-B0(dB/dx) Spatial gradient calculation - ANSWER-dB/dx Frequency of RF is measured in - ANSWER-mH Larmor Equation - ANSWER-Resonant frequency = gyromagnetic ratio * field strength Amplitude of RF is measured in - ANSWER-mT (height of waves) Maximum field str...

T1 is the measurement of time for the longitudinal component of the net magnetization vector to recover what percentage of its original value after the application of a 90 degree radio-frequency pulse? - ANSWER-63% Immediately after an initial 90 degree radio-frequency pulse is turned off, the hydrogen protons will begin to: - ANSWER-Dephase A 90 degree radio-frequency pulse will alter the net magnetization vector. Another effect is: - ANSWER-The hydrogen protons will dephase The basic ...

The T1 process is also known as: - Answer-Spin Lattice Which type of electromagnetic coils produce smaller magnetic field which allow spatial localization to be performed? - Answer-Gradient coils The component Mxy is most associated with: - Answer-Transverse to Bo; T2 relaxation; Transverse magnetization The resonance frequency of any substance in a magnetic field can be calculated by employing the: - Answer-Larmor equation Once the patient's area of interest is placed in the main magnet...

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 occur: - ANSWER-The transverse component will increase In MRI, substances respond to a specific radio frequency which is known as: - ANSWER-Resonance Frequency The introduction of gadolinum based contrast enhancement agents by intra-venous injection can involve passing through as abnormal blood br...

MRI Physics And Instrumentation Exam Study Guide |Graded A+| Immediately after an initial 90 degree radio-frequency pulse is turned off, the hydrogen protons will begin to: *Ans* Dephase. The introduction of gadolinium based contrast enhancement agents by Intra-venous injection can involve passing through an abnormal blood brain barrier. The tissue compartments involved are the: *Ans* Intravascular to interstitial. Once in the main magnetic field, a majority of hydrogen protons will a...

NRTC 14340 UNDERSEA WARFARE (2023/2024) RATED A+ the acronym sonar is derived from what words sounds, navigation, and ranging a sonar transducer can be compared to which of the following items microphone signal strength lost as sound waves travel through water is known by what term transmission loss which of the following sea states causes the greatest amount of absorption whitecap waves sound waves in seawater travel how many times faster than sound waves in air 2 which of the following se...

MRI chapter 1: Basic Principles Questions and Answers 2023 atom a tiny element that is the basis for all things molecule 2 or more atoms arranged together hydrogen the most abundant atom in the body electron negatively charged particles that spin around the nucleus nucleons particles in the nucleus proton positively charged element of the atomic nucleus neutron neutral charged element of the atomic nucleus atomic number sum of protons in ...