Quality Management 2017
S TANDARDIZE
5. IMRT QC results (portal dosimetry) monitored with SPC
- Head-and-neck treatments -
Special cause: TPS : upgrade of the algo. version
ORL P1 IUPESM N ° contrôle
100
• In daily practice at ICL :
99
98
Control charts
97
Process under control < 5% points out of limits
96
95
98 2,8 Moving-Range (%) Individual value. (%) EWMA (%) 99 100 101 0 0,0 0,4 0,8 1,2 1,6 2,0 2,4 0 Moyenneparpatient du%depointsayantun gamma<1 Ppk = 1.48 Ppm = 2.45 LSL LSL LSL 95 Process Data 2522,07 Observed Performance 50 10 50
ORL P1 IUPESM 100
150
200
250
Date
Performance indicators
Stable or superior
Ppk = 1.96 Ppm = 2.75
Ppk = 3.30 Ppm = 4.51
1
Process under control and statistically capable
Process Capability of Chgt algo
ORL P1 IUPESM Process Capability of Capa pat 51 à 221
Process Capability of Capa pat 1 à 50
LSL LSL
Target Target
Target Target
Target Target
LSL LSL
Process Data
Potential (Within) Capability
Potential (Within) Capability
Process Data
Potential (Within) Capability
LSL
95
Cp * CPL 3,81 CPU * Cpk 3,81
Cp * CPL 2,30 CPU * Cpk 2,30
SL
95
Cp * CPL 2,16 CPU * Cpk 2,16
Target
150 100
100
200
250
Moyenne par patient du %de points ayant un gamma < 100 Target
arget
S pecial cause identified
USL * Sample Mean 99,4909 Sample N 143 S Dev(Within) 0,393317 StDev(Overall) 0,453765
USL * Sample Mean 99,2293 Sample N 793 StDev(Within) 0,613523 StDev(Overall) 0,719232
SL * ample Mean 99,289 ample N 250 tDev(Within) 0,660528 tDev(Overall) 0,966656
Pp * PPL 3,30 PPU * Ppk 3,30 Cpm 2,44 Overall Capability
Date
Pp * PPL 1,96 PPU * Ppk 1,96 Cpm 1,58 Overall Capability
Pp * PPL 1,48 PPU * Ppk 1,48 Cpm 1,39 Overall Capability
• dispersion • mean
Performance indicators
95
96
97
98
99
100
100 99 98 97 96 95 94 93 96 95 94
97
150 0,00 PPM > USL * PPM Total 0,00 Observed Performance 99 98 PPM < LSL
100
PPM < LSL 0,00 PPM > USL * PPM Total 0,00 Exp. Within Performance
PPM < LSL 0,00 PPM > USL * PPM Total 0,00 Exp. Overall Performance
PPM < LSL 0,00 PPM > USL * PPM Total 0,00 Exp. Within Performance
PPM < LSL 0,00 PPM > USL * PPM Total 0,00 Exp. Overall Performance
PPM < LSL 8000,00 PPM > USL * PPM Total 8000,00 bserved Performance
PPM < LSL 0,00 PPM > USL * PPM Total 0,00 Exp. Within Performance
PPM < LSL 4,56 PPM > USL * PPM Total 4,56 Exp. Overall Performance PPM < LSL PPM > USL PPM Total
0
50
100
200
250
*
2522,07
Date
42
03/10/17
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