Quality Management 2017

S TANDARDIZE

5. IMRT QC results (portal dosimetry) monitored with SPC

- Head-and-neck treatments -

ORL P1 IUPESM N ° contrôle

100

• In daily practice at ICL :

99

98

 Index particularities

97

96

 Non normal distrib.   risk  0.27%  Physical limit at 100 %  Lower Spec. Lim. only   Pp  Ppk, Ppm:

95

98 Moving-Range (%) Individual value. (%) EWMA (%) 99 100 101 0 0,4 0,8 1,2 1,6 2,0 2,4 2,8 0 Moyenneparpatient du%depointsayantun gamma<1 Ppk = 1.48 Ppm = 2.45 LSL LSL 50 50

ORL P1 IUPESM 100

150

200

250

Date

1

Process Capability of Capa pat 1 à 50

ORL P1 IUPESM Target = 100% = max Target

M. Pillet et al. Quality Engineering (1997)

Process Data

Potential (Within) Capability

100

150

200

250

Moyenne par patient du %de points ayant un gamma < 95

SL

Cp * CPL 2,16 CPU * Cpk 2,16

arget

100

SL * ample Mean 99,289 ample N 250 tDev(Within) 0,660528 tDev(Overall) 0,966656

Date

Pp * PPL 1,48 PPU * Ppk 1,48 Cpm 1,39 Overall Capability

100 99 98 97 96 95 94 93

PPM < LSL 8000,00 PPM > USL * PPM Total 8000,00 bserved Performance

0,0 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

03/10/17

41

0

50

100

150

200

250