Three Cases of Transtracheal Catheter Oxygenation for Postoperative Dyspnoea with Pituitary-Dependent Hyperadrenocorticism in Dogs Treated by Surgery

Figure 1

MRI images of the pituitary gland and soft palate of the three dogs in this study. 1-Sag, 2-Sag, and 3-Sag: gadolinium-enhanced T1-weighted images of middle-sagittal section in cases 1, 2, and 3, respectively. 1-Ax, 2-Ax, and 3-Ax: gadolinium-enhanced T1-weighted image of the middle-axial section in cases 1, 2, and 3, respectively. The cranial MRI scans were performed using a 1.5 T superconducting MR imaging system (Visart; Toshiba, Tokyo, Japan) or a 3.0 T superconducting MR imaging system (Signa HDxt; GE Healthcare, Tokyo, Japan) under the following conditions: slice thickness of 2 mm with no slice gap, matrix of , and field of view of 12 cm (1.5 T MRI) or slice thickness of 2 mm with no slice gap, matrix of , and field of view of 15 cm (3.0 T MRI). T1- and T2-weighted images were taken with a repetition time/echo time of 410/15 ms and 4,000/100 ms, respectively. The length of the soft palate was measured as a straight line from the end of the hard palate to the caudal end of the soft palate in the middle-sagittal section (blue lines). The thickness of the soft palate was measured perpendicular to this line, and the maximum value was recorded (green lines). MRI: magnetic resonance imaging.