379 / 879
98
99
100
101
0
50
100
150
200
250
Moyenneparpatientdu%depointsayantungamma<
1
Date
ORL P1 IUPESM Nouvelles limites APRES chgt algo
95
96
97
98
99
100
0
50
100
150
200
250
Moyenne parpatient du%de points ayantun gamma < 1
Date
ORL P1 IUPESM Nouvelles limites APRES chgt algo
0,0
0,4
0,8
1,2
1,6
2,0
2,4
2,8
0
50
100
150
200
250
ORL P1 IUPESMNouvelles limites APRES chgt algo
N
°
contrôle
pecial cause: TPS : changement of algo. version
42
Performance indicators
Control charts
Process under control
Stable ou superior
•
In daily practice at ICL
:
< 5% points out of limits
Process under control and
statistically capable
S
pecial cause identified
Performance indicators
•
dispersion
•
mean
-
Head-and-neck treatments -
5. IMRT QC results (portal dosimetry) monitored with SPC
S
TANDARDIZE
Moving-Range (%)
Individual value. (%)
EWMA (%)
New limits
03/10/17