阿摩線上測驗
41.有關血管內近接治療（IVBT）採放射支架（radioactive stents）置入方式，下列敘述何者錯誤？
(A)利用將放射性同位素滲入支架後植入血管中
(B)其劑量分布較填充液囊（liquid-filled ballon）或射源導管處理方式更為均勻，是其優勢
(C)主要射源是安全性較高之β射源
(D)填充液囊及放射支架其放射劑量計算方式不同
統計： A(289), B(1599), C(464), D(499), E(0) #1943781
詳解 (共 3 筆)
血管成形術，支架置入術或旁路移植術後動脈內的血管內近距離放射治療（放射治療）可以防止動脈或移植物變窄。通過使用移植物，血管成形術（通過插入球囊擴大動脈）或插入支架（薄金屬套管）來保持動脈打開，可以繞過阻塞來治療狹窄和阻塞的動脈。然而，再狹窄（縮小或阻塞的恢復）通常在一年內發生。血管內近距離放射治療（IVBT）旨在通過在血管成形術或支架插入後對動脈的受影響部分施加輻射來防止再狹窄。
Intravascular brachytherapy (radiationntreatment) inside arteries after angioplasty, stent insertion, or bypass graftsnmay prevent narrowing of the arteries or grafts. Narrowed and blocked arteriesncan be treated by bypassing the blockage using a graft, angioplasty (wideningnthe artery by inserting a balloon), or inserting a stent (thin metal sleeve) tonhold the artery open. However, restenosis (return of the narrowing ornobstruction) often occurs within a year. Intravascular brachytherapy (IVBT)naims to prevent restenosis by the application of radiation to the affected partnof the artery after the angioplasty or stent insertion.
This review included eightnstudies with a total of 1090 participants. All eight included studies used thenfemoropopliteal artery. We did not identify any studies that used the iliacnarteries. All trials compared angioplasty with or without stenting plus IVBTnwith angioplasty with or without stenting alone. No trials were found comparingnIVBT to newer technologies such as drug eluting stents, balloons, orncryoplasty. Intravascular brachytherapy resulted in increased cumulativenpatency, reduced restenosis, and fewer occlusions on short-term follow-ups.nHowever, results from the eight included trials were not consistent andnlong-term outcomes need to be fully assessed. Therefore, more research isnneeded especially regarding the long-term outcomes and complications of thisntreatment, and the health economics and cost-effectiveness data.
