MLC: multi-leaf collimator
beam beam s s eye view
D D
DVH dose volume histogram
3 ( IMRT ( I-125 125
JCOG T1N0M0 JCOG0403
H 7 4 11 10 1 1( ( 39 39 14 14 21 15 16 16
98% 80% 93% 70% 93% DR 93% 90% DG 100%
Y 2004. 2004... FOCUS 4MVX,15cm 15cm (TSCF) TSCF) (1.032 1.320 1.320 RTP
Y 1.4 1.3 1.2 TSCF 1.1 1 0.9 0.8 5 10 15 20 25 (cm)
Y
16 8 17 1 2.5Gy 62.5Gy 10Gy 4 1 10Gy 1 10Gy 2 1. 2.
111 111 1998.9. 1998.9. 2004.5. 2004.5. 5 2004.5. 2004.5. I 10 10Gy/4 Gy/4 10 10Gy Gy 2 1 9 fistula fistula 2003. 9 2003. 9 2 2004.5. 2004.5. W 256 256 1999.3. 1999.3. 2004.4. 2004.4. 4 2004.4. 2004.4. T 25 25 2003.2. 2003.2. 2004.3. 2004.3. 1 2004.3. 2004.3. Y 32 32 2003.11. 2003.11. 2004.2. 2004.2. Y 276 276 1995.4. 1995.4. 1999 1999 10. 10. 2003.10. 2003.10. H 12 12 2000.6. 2000.6. 2002.7 2002.7 2002.7. 2002.7. K 23 23 1998.7. 1998.7. 2000.12 2000.12 2001.4. 2001.4. T
USA 1974-76 76 426 60 Co 2 Germany 1986-87 87 86 60 Co UK 1988 207 60 Co 25% 25% UK 1988-89 89 22 Cs-137-20% 20% +10% +10% Spain 1990 27 (18 ) 200% 200% 700% 700% UK 1982-91 91 1,000 (5-30% 30% ) USA 1992 94 1 Costa Rica 1996 115 (17 ) Co QA QA 60% 60%
(
JAS- TRO
(
, QA QA