Armrit stuvia - Study guides, Class notes & Summaries

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 A) precession B) resonance C) frequency D) angular momentum - ANSWER-precession magnetic resonance imaging is derived from the process known as: A) magnetic resonance angiography B) magnetic relaxation imaging C) nuclear magnetic resonance D) nuclear resonance imaging - ANSWER-nuclear magnetic resonance Once the nmv...

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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 patient's tissues Faraday's Law deals with induction of a current by a magnet. true or false? - ANSWER-true The orientation of the main magnetic field of a low field permanent magnet is vertical. True or false? - ANSWER-True ; permanent lowfield magnets utilize a mag...

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 patient's tissues Faraday's Law deals with induction of a current by a magnet. true or false? - ANSWER-true The orientation of the main magnetic field of a low field permanent magnet is verti...

Proton - answer-a subatomic particle having a positvie charge identical in magnitude to the negative charge of an electron and, together with the neutron, a component of all atomic nuclei. The proton forms, by itslef, the nucleus of the hydrogen atom. The mass of a proton is approximately 1836 times that of an electron and the mass of an atom is contained almost entirely in the nucleus. The proton has an intrinsic angular momentum or spin and thus a magnetic moment (very small magnetic field). T...

ARMRIT EXAM QUESTIONS & ANSWERS 100% ACCURATEARMRIT EXAM QUESTIONS & ANSWERS 100% ACCURATEARMRIT EXAM QUESTIONS & ANSWERS 100% ACCURATEARMRIT EXAM QUESTIONS & ANSWERS 100% ACCURATEDifferent 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 like a spinning top. t...

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 encoding data is combined to allow the FT to determine the position along the y-axis. The number of phase encoding steps determines - ANSWER-the number of pixels along the y-axis In a gradient ech...

ARMRIT Exam 2024 Questions & Answers 100% Correct ARMRIT Exam 2024 Questions & Answers 100% Correct ARMRIT Exam 2024 Questions & Answers 100% Correct ARMRIT Exam 2024 Questions & Answers 100% Correct 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...

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 SUBATOMIC PARTICLE HAVING A POSITVIE CHARGE IDENTICAL IN MAGNITUDE TO THE NEGATIVE CHARGE OF AN ELECTRON AND, TOGETHER WITH THE NEUTRON, A COMPONENT OF ALL ATOMIC NUCLEI. THE PROTON FORMS, BY ITSLEF, THE NUCL...

Different tissues that have signals that appear similar on an MR image are described as: A) hypointense B) hyperintense C) isointense D) isodense - 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 A) precession B) resonance C) frequency D) angular momentum - ANSWERprecession magnetic resonance imaging is derived from the process known as: A) magn...