The archives of physiological therapy . dal distance 37 cm.;exposure 60 seconds. Cramer Crown Plate. Figure 2. Empyema of antrum; all the upper teeth had been extracted and ethmoid cellshad all been scraped out. Rays 13 Tousey, 8 Benoist: 45 cm., 60 seconds. Schleussner X-ray plate. * /J Tousey indicates the intensity of the X-ray, and means that msihle fluorescence isproduced in a barium platino-cyanide fiuoroscope held at a distance of 13 metres from the X-raytube. Any number in the authors intensimetric scale {See The Archives of PhysiologicalTherapy for January, 1906), indicates this dista
The archives of physiological therapy . dal distance 37 cm.;exposure 60 seconds. Cramer Crown Plate. Figure 2. Empyema of antrum; all the upper teeth had been extracted and ethmoid cellshad all been scraped out. Rays 13 Tousey, 8 Benoist: 45 cm., 60 seconds. Schleussner X-ray plate. * /J Tousey indicates the intensity of the X-ray, and means that msihle fluorescence isproduced in a barium platino-cyanide fiuoroscope held at a distance of 13 metres from the X-raytube. Any number in the authors intensimetric scale {See The Archives of PhysiologicalTherapy for January, 1906), indicates this distance in metres, which is practically equivalentto yards. The measurement is made under the normal conditions of office work, not when thepupils of the eyes have been widely dilated by a long stay in the dark. If this measurement ofintensity is made at night, allowance should be made for the natural increase in visual percep-tion. Illustrating The X-Ray In Dental Diagnosis. — Archives of Physiological Therapy, February, igo6. Figure 3 Examination for empyema of antrum ; proved normal. 16 Tousey, 10 Benoist, 60 cm., 60 seconds. Schleussner X-Ray plate. Illustrating The X-Ray in Dental Diagnosis. — Archives of Physiological Therapy, February, igo6
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