Among the experimental model combinations, the combination of 2-d lobed nozzle with equal lobewidth and 2-d mixing tube has the best aerodynamic and infrared radiation suppression performance.
The direction of acoustic beam and angular width of main lobe can be changed by properly amplitude-weighting, decreasing the frequency of impulsive signal and adjusting the interval of array elements.
The shape, height of the pituitary gland, the width of pituitary stalk and the characteristic posterior lobe signals were measured and observed on sagittal T1WI.