Myocardial strain is clinically useful in the early diagnosis of myocardial dysfunction, particularly in anticancer therapy cardiotoxicity, and radiologists should understand the physics, principle... Myocardial strain is a measure of myocardial deformation, which is a more sensitive imaging biomarker of myocardial disease than the commonly used ventricular ejection fraction. Although myocardial...

Purpose: To evaluate the local specific absorption rate (SAR) and heating around retained cardiac leads during MRI at 64 MHz (1.5T) and 127 MHz (3T) as a function of RF coil type and imaging landmark.Methods: Numerical models of retained cardiac leads were built from CT and X‐ray images of 6 patients with retained cardiac leads. Electromagnetic simulations and bio‐heat modeling were performed with MRI RF body and head coils tuned to 64 MHz and 127 MHz and positioned at 9 different imaging landmarks covering an area from the head to the lower limbs.Results: For all patients and at both 1.5T and 3T, local transmit head coils produced negligible temperature rise ( ) for . For body imaging with quadrature‐driven coils at 1.5T, during a 10‐min scan remained < 3°C at all imaging landmarks for and <6°C for . For body imaging at 3T, during a 10‐min scan remained < 6°C at all imaging landmarks for . For shorter pulse sequences up to 2 min, remained < 6°C for .Conclusion: For the models based on 6 patients studied, simulations suggest that MRI could be performed safely using a local head coil at both 1.5T and 3T, and with a body coil at 1.5T with pulses that produced . MRI at 3T could be performed safely in these patients using pulses with .