Assume a typical clinical static field of Bo = 1.5T and a linear gradient field with G=0B/02 = 10 mT/m. The volume of the sample to be imaged (the 'imaging volume') is 50 cm DSV ('diameter spherical volume').| a) Compare the maximum change in the field introduced by the gradient with that introduced by field inhomogeneities of 10 ppm. b) Compare the maximum change in frequency induced by the gradient with the Larmor frequency produced by the main field. c) Explain (qualitatively) how field inhomogeneities might affect the image.