Objective To demonstrate the appearance of the diaphragm on single-slice dynamic MRI. Materials and Methods We evaluated the diaphragm using gadoliniumenhanced single-slice dynamic MR in 53 patients. Results The diaphragm was partially depicted in 49 cases (92.5%). Its thickest part measured 4.4 ± 2.2 mm, range 3 tol 15 mm. Enhanced high-intensity thin layer structures were partially identified between the diaphragm and liver parenchyma in 46 cases (86.8%) at 16 to 144 s (mean ± SD, 65.7 ± 32.6 s) after intravenous injection of Gd-DTPA. Conclusion Dynamic MR has value and limitations in demonstrating the diaphragm.