1. CHAPTER 7
X-RAY PRODUCTION

2. Current = number of electrons = quantity = mAs
Energy = quality = kVp

3. WHAT HAPPENS WHEN ELECTRONS HIT THE ANODE
I CM. –DISTANCE BETWEEN FILAMENT AND TUBE TARGET
PROJECTIVE ELECTRONS
TRANSFER THEIR ENERGY
PENETRATE THE TARGET
CONVERT KE INTO HEAT AND X-RAYS
THE ELECTRONS THEMSELVES ARE CONDUCTED THROUGH THE X-RAY ANODE ASSEMBLY AND OUT.

4. ANODE HEAT INFRARED RADIATION NO TRANSFER OF ENERGY FROM ELECTRON
EXCITES OUTER SHELL ELECTRON OF ANODE TARGET
DOUBLE THE TUBE CURRENT = DOUBLE THE HEAT

5. Efficiency of x-ray production
Increases with kVp
See page 125

6. CHARACTERISTIC RADIATION
USEFUL BEAM
INNER SHELL
At 100 kVp = 15% of the x-rays produced are characteristic
At 65kVp = none are characteristic

7. BREMSTRAULUNG
BRAKING
At 65kVp all are bremstraulung

8. X-ray emission spectrum

9. The emission spectrum
Large the “bump” = more quantity pg 131, figure 7-11
Farther to the right = more quality pg 131, figure 7-12
Added filtration decreases intensity but increases quality. Pg 132, figure 7-13
Increased atomic number of target
Single phase vs three phase in efficiency and quality pg 134, figure 7-16