Ferromagnetic material is - Study guides, Class notes & Summaries

1. Static field metrics 1T = 10,000G (0.5mT = 5G) 2. Who published guide- lines titled "Criteria for Significant Risk" that specifies what qualifies as significant risk of ex- posure to magnetic field associated with MRI. FDA 3. FDA guidelines state EX- POSURE to a static field that does not pose a sig- nificant risk is: Limited to 8T for adults and infants > 1 month Limited to 4T for infants < 1 month 4. Forces related to static field -Torque/rotation -Translation/Displacement ...

Magnetic particle is a nondestructive testing method used for - Answer locating surface and near surface discontinuities in steel Ferromagnetic material is - Answer strongly attracted by a magnet The permeability of a material describes: - Answer the ease with which it can be magnetized The retentivity of a material describes - Answer the ability to retain the magnetic field Magnetic particles are available in different colors - Answer for color contrast with the part surface thereby...

ENTC 402 Test 1 Question and answers correctly solved 2023/2024Ferromagnetic - correct answer _____ is strongly attracted by a magnet Permeability - correct answer the ease with which a material can be magnetized Retentivity - correct answer A material's ability to retain a magnetic field Gauss - correct answer Unit usually used to denote flux density No indications - correct answer Magnetic flux lines that are parallel to a discontinuity produce the material is ferromagnetic - c...

What is required for facilities that have two or more types of radiation, besides a RSO? - A Radiation Safety Committee who controls all radiation safety policies and procedures and should include an authorized user for each type permitted by a license, the RSO, a nurse, a manager True or False? The NCRP guidelines state that the radiation exposure should be limited to slightly above upper boundary levels. - False, As low as reasonably achievable (ALARA) True or False? A room survey should ...

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...

The "triboelectric effect" causes what kind of electricity? - correct answer Static The law of static electrical charges states: - correct answer like charges repel Minute particles that make up all possible elements and still retain the unique chemical characteristics of the element are called _____________. - correct answer Atoms A molecule is the smallest particle of matter that can exist by itself. (1) - correct answer True (1) A basic atom must contain what two types of subato...

MRSO Exam 1 Questions with Complete S The control room is found where? a. Zone I b. Zone II c. Zone III d. Zone IV - Answer-C. Zone III Which of the following describe when a non-ferrous object is repulsed by static magnetic field? a. Fourier transformation b. Lenz's force c. Ohm's law d. Larmor equation - Answer-b. Lenz's force Which of the following are recommended by the ACR Guidance document in MR safety 2013 in proper scanning of a patient? I.Metal detector II.Ferromagnet...

Iron is an example of a _______________ material. Ferromagnetic For trauma radiography, a radiographer could best acquire images of a lateral distal femur by: acquiring a cross-table lateral femur with a lateromedial projection Total brightness gain for the image intensifier is calculated by: flux gain multiplied by minification gain. A person with acute radiation syndrome does not demonstrate signs of illness during the ________ period. latent An adult patient has diffuse erythema ...

T2 is the measurement of time from the transverse component of the NMV to decrease what percentage of its max value after the application of a 90 degree RF pulse - 37% combining a metal ion with a ligand reduces their tendency to bind proteins, enzymes, or membranes, the degree to which they disassociate is a measure of: - toxicity 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 ...

The "triboelectric effect" causes what kind of electricity? Static The law of static electrical charges states: like charges repel Minute particles that make up all possible elements and still retain the unique chemical characteristics of the element are called _____________. Atoms A molecule is the smallest particle of matter that can exist by itself. (1) True (1) A basic atom must contain what two types of subatomic particles? Electron and proton An electron has ______________...