TY - JOUR
AU - Yules, Richard B.
AB - Two Aids for Cinefluorography 1 Chester L. Sandberg , Jr. and Richard B. Yules , M.D. ↵ 1 From the Department of Surgery, Division of Plastic and Reconstructive Surgery (C. L. S., Engineering Consultant; R. B. Y., Fellow), Stanford Medical Center, Palo Alto, Calif. 94304. Excerpt In the attempt to attain maximum effectiveness of cinefluorographic analysis of palatopharyngeal movement, it has become clear that auxiliary equipment is needed. There are mechanical problems involved which hamper both accurate cine filming and cine scoring. The two following devices have been designed to alleviate several of these basic difficulties. Head Holder Cinefluorography of palatopharyngeal speech function is sensitive to subject motion in the plane of focus. The radiologist must hold the head of his young patient with a lead-gloved hand, although this procedure is often unsatisfactory in preventing lateral movement. A head-holder has been designed to insure correct positioning, while freeing the radiologist to monitor the focus of the machine. This unit (Fig. 1, installed in chair) was designed specifically for velopharyngeal evaluation, although it can be adapted for other head and neck studies. In the palatopharyngeal evaluation, the patient must be able to swallow barium and read cards held before him. Thus, motion in the sagittal plane is necessary, while motion in the coronal plane must be minimal during filming. As seen in Figure 2, a set of linkages has been arranged to allow movement in the sagittal plane. The unit is made of lightweight aluminum, yet provides the stability to confine the patient's movement to one plane. Ball bearings provide greater lateral support and ease of movement in the plane of motion. The bearings are attached to the half-inch diameter rods and then press-fit with an expansion joint around the perimeter of the bearing. One of the major difficulties in designing and building this unit was that it was to be used on both children and adults. Major adjustments had to encompass variations in height from the stool and in head width. The vertical adjustment is facilitated by thumb screws which are loosened, allowing the entire unit to be moved up or down on the back post of the chair. The head adjustment is also made by thumb screws with two temple supports moved to the correct position on the head. Patient and physician acceptance of the head-holder has been good. It appears to be less distracting during the reading exercises than is the lead-glove method. The head-holder is an inexpensive yet sophisticated means of controlling patient head movement during cinefhiorography. Cine Scorer Comparative cine analysis of the vector parameters involved in palatopharyngeal speech function is facilitated if measurements can be taken from projections of uniform scale, preferably full scale, to avoid time-consuming conversion. In the past, a nickel taped to the patient's chin was used as a standard scale reference and a rough indicator of angular error. Tracings were made on paper held against a projection screen on the wall. This tech nic was obviously awkward and uncomfortable, time-consuming, and prone to error.
TI - Two Aids for Cinefluorography
JF - Radiology
DO - 10.1148/91.4.821
DA - 1968-10-01
UR - https://www.deepdyve.com/lp/radiological-society-of-north-america-inc/two-aids-for-cinefluorography-2V1POnPD6q
SP - 821
VL - 91
IS - 4
DP - DeepDyve
ER -