A data transducer having an air bearing surface is used to reduce thermal pole tip protrusion. Extracting the ellipsoid candidate includes: inputting an image with figures; selecting the ellipsoid candidate from the figures; and extracting a contour candidate point and a center point. Disposed within the interior chamber is a substrate having a plurality of contacts. In addition, the base is generally rectangular and has a central opening in its upper and lower surfaces. The turntable can be readily rotated 360 degrees so that the equipment can easily be viewed by caregivers located in both the front and rear of the patient transport device. The cooling tube, once inserted in the channels is deformed to conform to the C-shaped channels, whereby heat stored in said heat storing element is extracted by circulating cooling fluid inside the cooling tube.