PSI TG-51 Page


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Here is a sample TG-51 calculation page from our Quality Assurance. Each machine is also checked to conform to the TG-40 guidelines for Quality Assurance.

 

Date: 6/28/07 Physicist: James P Vaughan
CL2300 CD TG-51 Calibration
Action Level: 2%
Temp: 21.0 Exradin A12 N(D,w): 5.05E+07 Gy/C
Pres: 753.2 Serial No. 1994 k(ecal): 0.906
Ctp: 1.006 radius: 0.305 cm.
Capintec 192 Celec: 1.92E-10 C/rdg
Serial No. 47206484
CNMC Water Tank
Setup: Photons: 10 X 10 field, 100 cm SSD, depth 10 cm., 100 MU
Electrons: 15 X 15 Cone, 100 cm SSD, Dref depth, 100 MU
Photons Energy 6x 23x Voltages:
R(+V) 69.1 84.1 322
R(-V) -69.2 -84.5 -323
R(+1/2 V) 68.8 83.7 160
P(ion) 1.004 1.005
P(pol) 1.001 1.002
k(Q) 0.990 0.9687
Readings: 69.0 84.2
Dose(10) 0.669 0.800
Clinical %DD(10) 0.670 0.800
cGy/MU  0.998  1.000
Electrons Energy 4 6 9 12 16 20
R50 1.40 2.48 3.68 5.10 6.81 8.48
D(ref) 0.74 1.39 2.11 2.96 3.99 4.99

Average Readings

R(+V) 9.31 9.54 9.62 9.75 9.67 9.48
R(-V) -9.10 -9.22 -9.35 -9.50 -9.42 -9.27
R(+1/2 V) 9.26 9.49 9.57 9.70 9.63 9.45
P(ion) 1.005 1.005 1.005 1.005 1.004 1.003
P(pol) 0.989 0.983 0.986 0.987 0.987 0.989
k'(R50) 1.068 1.048 1.032 1.018 1.005 0.995
P(grad) 1.000 1.000 1.000 1.000 1.000 1.000
Readings: 9.19 9.53 9.64 9.48 9.69 9.49
Dose/MU(Dref) 1.00 1.02  1.01 0.98 0.99 0.96
Clinical %DD(Dref) 1.00 1.00 1.00 0.99 0.98 0.97
cGy/MU 1.004 1.015 1.016 0.995 1.013 0.992
Adjusted? yes     yes    
 

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Last modified: March 12, 2013

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