<prompt> In clinical MR imaging, the patient is placed within a strong magnetic field; the strength of the magnetic field used most commonly is:1.5 T0.15 T15 T7 T  <response>: In clinical MR imaging, the patient is placed within a strong magnetic field. The field strengths range from 0.1 to 7 T, with 1.5 T being the most common 1.5 T is about 30,000 times the strength of the earths magnetic field. 