Fig. 1From: MRI of trunk muscles and motor and respiratory function in patients with myotonic dystrophy type 1Transversal T1 weighted images in L3/L4 level in a female DM 1 patient illustrates the measuring of the thickness of the cranial rectus abdominis muscle (arrow), the three layers in the lateral abdominal wall; the external, internal and transversal abdominal (arrow head), and the sum of the three layers (open arrow head), and the area of the erector spinae muscle (*)Back to article page