32 SERIES (VIDEO NO 31)

hello everyone this is dr. Amiya from team MDS conquer in this 32 series we are going to discuss numerical sing oral radiology point number one the tungsten wire in cathode of x-ray machine is of two millimeters in diameter and one centimeter or less than one centimeter in length point number two the atomic number of tungsten target in annual is 74 point number three the melting point of tungsten target in analyst 3000 for 22 degree centigrade point number four the thermal conductivity of tungsten target in analyst 173 Ward number five the percentage of electron kinetic energy converted into heat is 99 percent number six the inclination of target in inori's twenty degree point number seven the actual focal spot size is 1 mm into 3mm number eight effective focal spot size is 1 mm into 1mm number nine filament transformer reduces the old age of incoming alternating current of 10 volts number 10 the voltage of intraoral panaroma cancer flow metric radiographs is 60 to 90 kv p 7 for CB CT the voltage is 90 to 120 kv p number 12 the typical duty cycle is one is 260 that is 0.25 seconds exposure for every 15 seconds point number 13 the inherent filtration of most x-ray machines ranges from equivalent of 0.5 to 2 mm of aluminum whereas the total filtration should be equivalent of 1.5 mm of aluminum for a mission operating at up to 70 kv p number 15 total filtration is 2.5 mm of aluminum for more than 70 kV permissions number 16 the coherent scattering is 7% number 17 the photoelectric absorption is 27 percent whereas the Compton scattering is 57 percent Bowen number 19 primary photons pass through the patient tissues with no interactions is nine percent point number twenty one gray equal to hundred radiations absorbed dose number twenty one one civics is equal to hundred row engine equivalent man number 22 approximately one third of biologic effects of x-ray exposures result from direct effects whereas two third of biologic effects are from indirect effects point number 24 this direct and indirect effects are completed 10 power minus 5 seconds point number 25 the radiotherapy codes includes total 60 to 70 gray that should be given in six to seven weeks number 26 after irradiation mucosal healing complete by above two months number twenty-seven of the irradiation taste equity usually decreases by factor thousand to ten thousand number 28 after radiotherapy taste recovery takes place in 60 to 120 days member 29 this salivary flow may reach essentially zero 860 gray number 30 during radiotherapy buffering capacity of this saliva decreases by 44 percent number 31 radiation caries is seen with the doses more than fatigued gray whereas radiation caries is trounce if dose is more than 60 gray that's it for today's session guys hope you all know down these points and prepare well thank you [Music]