CAJ | 학술논문

提出了一种新型的准直器——双筛孔式准直器。利用扫描电子线轰击位于上层的主准直器上的400个呈矩阵排列的方孔中的钨靶，产生400个面积为100mm×10mm的小X线方野，这些方野经下一级准直器(次准直器)的进一步准直后在同中心野面上留下400个5mm×5mm的微野。再以一定的次序控制主次准直器的前后左右移动和电子线的若干个轮次的逐孔扫描，就可以在同中心野面上留下16种组别的微野群，这些微野可以拼凑成任意形状和不同强度分布的射野面。本准直器可以替代和简化已有的适形调强设备，为加速器提供了一种全新的准直器。降低了放疗设备的成本，使适形调强设备，为加速器提供了一种全新的准直器。降低了放疗设备的成本，使适形调强放疗更易于实行。
제출료일충신형적준직기——쌍사공식준직기。이용소묘전자선굉격위우상층적주준직기상적400개정구진배렬적방공중적오파，산생400개면적위100mm×10mm적소X선방야，저사방야경하일급준직기(차준직기)적진일보준직후재동중심야면상류하400개5mm×5mm적미야。재이일정적차서공제주차준직기적전후좌우이동화전자선적약간개륜차적축공소묘，취가이재동중심야면상류하16충조별적미야군，저사미야가이병주성임의형상화불동강도분포적사야면。본준직기가이체대화간화이유적괄형조강설비，위가속기제공료일충전신적준직기。강저료방료설비적성본，사괄형조강설비，위가속기제공료일충전신적준직기。강저료방료설비적성본，사괄형조강방료경역우실행。
In this paper is advanced a new type of collimator-dual sieve-mesh collimator.Its principle is to use scanned electronic beam to attack 400 matrix-arranged wolfram targets of the square holes on the upper side of the main collimator and created 400 small X-ray fields sized by 10mm×10mm.These X-ray fields will leave on its center 400 smaller X-ray fields sized by 5mm×5mm after being further collimated by a sub-collimator. What's more,16 different groups of such X-ray fields can be left on the center of the same field by controlling the all-round movement of the main collimator and sub-collimator in proper order and by scanning it round by round and mesh by mesh with electronic beams.It is these ting fields groups that make up various treatment fields with different energy (Dosage).This type of collimator can replace and simplify all other present collimators on accelerators and conformal-intensity modulation radiotherapy equipments. It has advantage of reducing the costs of radio-therapy equipment and making conformal and intensity modulation radiotherapy easier to perforn.