what is the relationship between the static magnetic field and ferromagnetic in MRI?
The static magnetic field attracts the ferromagnetic objects towards the center of bore of MRI scanner and these projectiles (like medical equipments ,hairpin , coin, steel oxygen tanks etc ) could become dangerous.This could lead to accidents. Thats why safety precautions are necessary in handling MRI scanner.
what is the relationship between the static magnetic field and ferromagnetic in MRI?
the relationship between the static magnetic field and translational force in MRI ?
a) A metal ring of 2.40 cm diameter moves into the magnetic field of an MRI scanner in 0.30 s from where the magnetic field is zero. The magnetic field in the MRI is 1.90 T and the plane of the ring is perpendicular to this field. Determine the voltage induced in the ring. b) If the ring in the problem above has a resistance of 0.009 Ω, what is the current induced in the ring, and in what direction...
6. An solenoid in an MRI machine produces an axial magnetic field of 3.5 T. If the length of the MRI is 1.4 m and it is wound with 800 turns of wire, what current is needed to produce this field?
In an MRI machine, a large magnetic field is generated by the cylindrical solenoid surrounding the patient. If the current is 4 kA, the magnet depth is 3m and superconducting wire is 1cm wide, what is the magnetic field that the patient experiences?
The magnetic field produced by the solenoid in a magnetic resonance imaging (MRI) system designed for measurements on whole human bodies has a field strength of 8.0 T, and the current in the solenoid is 1.5 102 A. What is the number of turns per meter of length of the solenoid? Note that the solenoid used to produce the magnetic field in this type of system has a length that is not very long compared to its diameter. Because of...
An MRI technician moves his hand from a region of very low magnetic field strength into an MRI scammer's 2.00 T field with his fingers pointing in the direction of the field. His wedding ring has a diameter of 2.05 cm and it takes 0.35 s to move it into the field. Randomized Variables d=2.05 cm t=0.35s Part (a) What average current is induced in the ring in A if its resistance is 0.0100 Ω? Part (b) What average power is dissipated in mW? Part...
Magnetic Resonance Imaging An MRI (magnetic resonance imaging) solenoid produces a magnetic field of 1.4 T . The solenoid is 2.5m long, 1.0 m in diameter, and wound with insulated wires 2.2 mm in diameter. Find the current that flows in the solenoid. (Your answer should be rather large. A typical MRI solenoid uses niobium-titanium wire kept at liquid helium temperatures, where it is superconducting.)
Draw the magnetic field change curve (hysteresis curve) of the magnetization of a ferromagnetic material. Demonstrate permanent magnetization (MR), saturation magnetization (MS) and coercive field values (HC) on the curve. Briefly explain what these terms mean. a) Briefly describe the Pauli exclusion principle? b) Find the lattice vectors of conventional and primitive unit cells and the angles between the lattice vectors for surface centered cubic (FCC) lattice. Find the volume of the unit cells to obtain the ratio of the...
An MRI technician moves his hand from a region of very low magnetic field strength into an MRI scanner’s 2.00 T field with his fingers pointing in the direction of the field. His wedding ring has a diameter of 2.35 cm and it takes 0.475 s to move it into the field a. What average current is induced in the ring in A if its resistance is 0.0100 Ω? b. What average power is dissipated in mW? c. What magnetic...
An MRI (magnetic resonance imaging) solenoid produces a magnetic field of 1.7 T . The solenoid is 2.5m long, 1.0 m in diameter, and wound with insulated wires 2.0 mm in diameter.Find the current that flows in the solenoid. (Your answer should be rather large. A typical MRI solenoid uses niobium-titanium wire kept at liquid helium temperatures, where it is superconducting.)