Magnetization vector - Study guides, Class notes & Summaries

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 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) ma...

In MRI, substances respond to a specific radio frequency which is known as: - Resonance frequency The effects of main magnetic field inhomogeneities on the FID signal are corrected for in a Spin-echo sequence by applying a second radio-frequency pulse. The flip angle of this radio-frequency pulse is: - 180 degrees The components of the Gyro-magnetic ratio are: - Magnetic moment to angular momentum Which type of electromagnetic coils produce smaller magnetic field which allow spatial locali...

ARMRIT Exam Questions With 100% Correct Answers | Updated & Verified 2024/2025 (GRADED)Studies have concluded that static magnetic fields up to what tesla produce no substantial harmful biological effects. - C)2.0 Tissues that have low (short) relaxation times have: - Higher relaxation rates Nuclei in their natural enviroment ( in the absence of a significant magnetic field) are aligned... - Randomly Following the injection of a gadolinium enhancement agent, the pulse sequence most commonly...

ARMRIT {MRI Technologist} Exam Practice & Study Test Questions With Revised Correct Answers | Updated & Already Passed | 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 typ...

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 ...

ARMRIT Exam Questions With 100% Correct Answers | Updated & Verified 2024/2025. The NMV is rotated to the physical negative Z axis by applying a...? - C)180 pulse Increasing which parameter is considered the "best" technique for improving image quality? - C)NEX Studies have concluded that static magnetic fields up to what tesla produce no substantial harmful biological effects. - C)2.0 Tissues that have low (short) relaxation times have: - Higher relaxation rates Nuclei in their natural e...

ARMRIT Exam Questions With 100% Correct Answers | Updated & Verified 2024/2025 | Graded. The NMV is rotated to the physical negative Z axis by applying a...? - C)180 pulse Increasing which parameter is considered the "best" technique for improving image quality? - C)NEX Studies have concluded that static magnetic fields up to what tesla produce no substantial harmful biological effects. - C)2.0 Tissues that have low (short) relaxation times have: - Higher relaxation rates Nuclei in their ...

The NMV is rotated to the physical negative Z axis by applying a...? - C)180 pulse Increasing which parameter is considered the "best" technique for improving image quality? - C)NEX Studies have concluded that static magnetic fields up to what tesla produce no substantial harmful biological effects. - C)2.0 Tissues that have low (short) relaxation times have: - Higher relaxation rates Nuclei in their natural enviroment ( in the absence of a significant magnetic field) are aligned... - Ra...

MCPHS IMAGINGU MRI EXAM QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS VERIFIED BY EXPERTS Active Shimming is done at the time of imaging and consists of running current through specific coils to increase the strength/homogeneity of certain areas in the MRI scanner to increase image quality. Faraday's Law states that: when a loop of wire is exposed to a moving magnetic field, a voltage will be induced into that loop of wire Calculate the voxel volume for a sequence with a 240x240mm FOV,...

ARMRIT Practice Test for MRI Technologists with Complete Solutions 2024 Magnetism can be defined as the ability of certain substances to attract: - Correct Answer Iron, Cobalt, Nickel The components of the Gyro-magnetic ratio are: - Correct Answer Magnetic moment to angular momentum Which type of electromagnetic coils produce smaller magnetic field which allow spatial localization to be performed? - Correct Answer Gradient coils Which type of MRI magnet requires cryogen to cool magneti...