澶撮閮ㄨ偪鐦よ皟寮烘斁鐤椾腑鎽嗕綅鍋忓樊鐨勬祴閲忎笌鍒嗘瀽
浣滆�咃細娌堝悰濮濓紝鐜嬪仴鐞紝寮犲疁鍕わ紝缈熸尟瀹囷紝鑽嗚タ浜?/p>
銆愬叧閿瘝銆?/p>
澶撮閮ㄨ偪鐦わ紱鎽嗕綅璇樊锛涚數瀛愬皠閲庡奖鍍忚缃紱鏁板瓧閲嶅缓鍥惧儚
銆?/p>
Abstract
銆?/p>
AIM: To measure the setup error in the intensity
modulated
radiation
therapy
(IMRT)
for
headneck
neoplasms,
and
to
analyze
the margin between the clinical target volume (CTV) and planning target
volume (PTV). METHODS: Seventysix patients with headneck
neoplasms
were choosed at random.
The portal films were screened
using the electronic portal imaging device (EPID), and the error was
analyzed through paring the portal film with the digitally reconstruced
radiographs (DRR) in the treatment planning system (TPS). RESULTS: The
setup errors were (-
卤) mm,(
-
卤) mm,(
-
卤) mm and the margins were mm,
mm, mm in lateral, cranialcaudal and ventraldorsal directions
respectively. CONCLUSION: For the patients with headneck neoplasms
undergoing the IMRT, the margins between the CTV and the PTV should be
mm
in
the
lateral
direction,
and
2
mm
in
cranialcaudal
and
ventraldorsal
directions. Moreover, with the treatment time goes by, the error varied
irregularly.
銆?/p>
Keywords
銆?/p>
head and neck neoplasms; setup error; electronic
portal imaging device (EPID); digital reconstructedly radiograph (DRR)
銆愭憳瑕併�戠洰鐨勶細
娴嬪畾澶撮閮ㄨ偪鐦ゅ湪璋冨己鏀惧皠娌荤枟涓殑鎽嗕綅鍋忓樊锛屽垎鏋?/p>
璁″垝璁捐涓粠涓村簥闈跺尯锛?/p>
CTV
锛夊埌璁″垝闈跺尯锛?/p>
PTV
锛夌殑澶栨墿杈圭晫
.
鏂规硶锛?/p>
闅忔満鎶?/p>
鍙?/p>
76
鍚嶅ご棰堥儴鑲跨槫鎮ｈ�咃紝鍦ㄦ不鐤楁椂鐢ㄧ數瀛愬皠閲庡奖鍍忚缃紙
EPID
锛夋媿鎽勫皠閲庣墖锛?/p>
灏嗗皠閲庣墖鍜岃鍒掔郴缁熶腑鐨勬暟瀛楅噸寤哄皠閲?/p>
锛?/p>
DRR
锛?/p>
鍥惧儚鐗囪繘琛岃宸瘮杈?/p>
.
缁撴灉锛?/p>
鍦?/p>
宸﹀彸銆?/p>
澶磋剼銆?/p>
鑵硅儗鏂瑰悜鐨勬憜浣嶈宸垎鍒槸
(-
卤)
mm
锛?/p>
(-
卤)
mm
锛?/p>
(-
卤)
mm
锛?/p>
澶栨墿杈圭晫鍒嗗埆鏄?/p>
mm
锛?/p>
mm
锛?/p>
mm.
缁撹锛?/p>
瀵逛簬澶撮閮ㄨ皟寮烘不鐤楃殑鎮ｈ�咃紝
CTV
鍒?/p>
PTV
鐨勫鏀捐竟鐣屽湪宸﹀彸鏂瑰悜闇�瑕?/p>
mm
锛屽ご鑴氭柟鍚戝拰鑵硅儗鏂瑰悜闇�瑕?/p>
2 mm.
骞朵笖闅?/p>
鐫�娌荤枟鏃堕棿鐨勯�掕繘锛屾憜浣嶈宸病鏈夎寰嬫�х殑鍙樺寲
.
銆愬叧閿瘝銆?/p>
澶撮閮ㄨ偪鐦わ紱鎽嗕綅璇樊锛涚數瀛愬皠閲庡奖鍍忚缃紱鏁板瓧閲嶅缓鍥?/p>
鍍?/p>
0
寮曡█
鏀惧皠娌荤枟杩囩▼涓偅鑰呯殑鎽嗕綅鍋忓樊鏄奖鍝嶇簿纭不鐤楃殑鍏抽敭鍥犵礌锛?/p>
瓒婃槸绮剧‘