Clinical scanners increasingly use a field

PHYSICS · Subjective · Fermi University Physics · Quantum Mechanics · Symmetry, angular momentum and spin · Symmetry, angular momentum and spin

Quantum Mechanics: From the Photon to the Hydrogen Atom, Ch Spin one-half, the Pauli matrices and two-level systems

Problem

Clinical scanners increasingly use a

3.0\ \mathrm{T}

field, stronger than the

1.5\ \mathrm{T}

scanner described in this chapter's interlude. Take the proton's precession rate to be

42.58\ \mathrm{MHz\,T^{-1}}

. Find the frequency at which the radio coil around the patient must be tuned to detect the precessing protons in a

3.0\ \mathrm{T}

scanner, and the factor by which this exceeds the

1.5\ \mathrm{T}

scanner's frequency. Does this factor need any new information about protons, or does it follow from the physics already in this chapter?