<prompt> In MRI the commonly field used is -0.05 tesla100 tesla1.1 tesla11 tesla  <response>: In MR examination, a large static magnetic field is applied. Field strengths for clinical equipment can vary between 0.2 and 7 T Most commonly used current MRI machines in diagnostic use are of 1.1 and 1.5T. Hence the single best answer would be 1.1 T The field strength of the magnet will influence the quality of the MR image regarding: chemical shift aifacts the signal to noise ratio SNR motion sensitivity and susceptibility aifacts. 