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