ARMRIT EXAM BUNDLE(COMPLETE PACKAGE DEAL)QUESTIONS & ANSWERS 100% ACCURATE(GRADED A+)

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 localizatio...

The 2 types of enhancement media described by Lauffer, the mechanism of T1 agents is - ANSWER-to decrease T1 relaxation time, thus emitting high signal An analogy for the decoding of the MR signal through Fourier Transform - ANSWER-Basilar membrane processing sound Logically each line of phase...

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

The 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 current in the...

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 #...

The tissue characteristic that depends heavily on the relative content of fat molecules and free water is: - ANSWER-Hydrogen concentration. 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 appli...

The T1 process is also known as: - ANSWERSpin Lattice Which type of electromagnetic coils produce smaller magnetic field which allow spatial localization to be performed? - ANSWERGradient coils The component Mxy is most associated with: - ANSWERTransverse to Bo; T2 relaxation; Transverse magne...

Tissues that have low (short) relaxation times have: - ANSWER-High (long) relaxation rates Spatial resolution is an image quality factor determined by ________ and ________. - ANSWER-Slice thickness and pixel size Inversion time, In an inversion recovery pulse sequence, is the time interval be...

Different tissues that have signals that appear similar on an MR image are described as: A) hypointense B) hyperintense C) isointense D) isodense - ANSWER-isointense in a large main magnetic field such as those employed in MRI, the motion of a hydrogen proton has been described as wobbling li...

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Atoms - answer-fundamental submicroscopic unit of all mass. Size of the atom and its weight have interested scientists for a long period. Subsequently, experiments were devised to determine the size and weight of the various atoms. The lightest of all atoms is hydrogen. Proton - answer-a subatomi...