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1、放射性粒子放射性粒子支架技術(shù):惡性腔道梗阻支架技術(shù):惡性腔道梗阻非手術(shù)治療的新標(biāo)準(zhǔn)非手術(shù)治療的新標(biāo)準(zhǔn)200320082010第一代食管粒子支架完成動物實(shí)驗(yàn)完成臨床I,2期試驗(yàn)分體式膽管粒子支架2012完成食管3期試驗(yàn)2015氣管粒子支架2014 Lancet Oncology氣管粒子支架支架模型TPS系統(tǒng)動物實(shí)驗(yàn)臨床應(yīng)用EJR, 2007Radiology, 2008臨床應(yīng)用惡性膽管梗阻門靜脈粒支架J Hep, 2012膽管多中心RCT125125I I粒子支架的研發(fā)歷程粒子支架的研發(fā)歷程A Novel Biliary Stent Loaded with 125I Seeds in MBOBi
2、liary radioactive stentDeployment through 9F sheathEsophageal radioactive stentDeployment through 24F sheath125I粒子支架治療食管癌臨床應(yīng)用16萬例占國內(nèi)市場60%,歐洲市場20%國家科技進(jìn)步二等獎2011年度完成人:滕皋軍,郭金和等主要學(xué)術(shù)成就與貢獻(xiàn)125I粒子支架及消化道系列支架的研發(fā)與應(yīng)用125I粒子支架及消化道系列支架的研發(fā)與應(yīng)用支架裝填管ad1d125I粒子食管支架的研發(fā)與應(yīng)用硬件系統(tǒng)軟件系統(tǒng)125I粒子食管支架與釋放系統(tǒng) TPS(放射治療計(jì)劃系統(tǒng))主要學(xué)術(shù)成就與貢獻(xiàn)Esop
3、hageal 125I Stent: Animal Study食管粒子支架:動物試驗(yàn)食管粒子支架:動物試驗(yàn)Feasibility an & Safety StudiesImplantation without migration Safety dose for normal esophagus, adjacent organs and tissuesEsophagusA,2 wksProliferation subepithelial submucosal fibrous tissueA,4 wkscapillary dialatationA,2 wksHistology Results: S
4、tented EsophagusProliferation subepithelialA,4 wksUltra-structural Findings: Adjacent TissueCilia on the surface of tracheal mucosa were showed scaled and sparse.Vacuolated mitochondria were noted at 8 weeks0.000.501.001.502.002.502 wks4 wks8 wksAbsorbed Dose(Gy)2.0cm/0.9mCi 2.0cm/0.6mCi2.0cm/0.3mCi
5、0.002.004.006.008.0010.0012.0014.0016.0018.002 wks4 wks8 wksAbsorbed Dose(Gy)1.0cm/0.9mCi 1.0cm/0.6mCi1.0cm/0.3mCiGraph of Accumulative Absorbed Dose at Distance of 10 mm Graph of Accumulative Absorbed Dose at Distance of 20 mm Accumulative Absorbed Dose at Difference Distance不同距離的吸收劑量不同距離的吸收劑量 確定支架
6、的直徑、長度以及每周可布的粒子數(shù);確定支架的直徑、長度以及每周可布的粒子數(shù); 修改支架的位置及方位修改支架的位置及方位Treatment Plan System 放射治療計(jì)劃系統(tǒng)放射治療計(jì)劃系統(tǒng)125I粒子支架及消化道系列支架的研發(fā)與應(yīng)用主要學(xué)術(shù)成就與貢獻(xiàn)Phase II study 臨床結(jié)果臨床結(jié)果Phase III Trial: a Multicentric RCTIII期試驗(yàn):多中心前瞻性隨機(jī)對照研究期試驗(yàn):多中心前瞻性隨機(jī)對照研究Irradiation stentControl stentInclusion criteria Endoscopically and histologica
7、lly confirmed EC Dysphagia score of 3 or 4 Unresectable tumors ECOG score: 0-3Exclusion criteria ECOG PS of 4 Dysphagia not caused by EC Dysphagia score of 1 or 2 Noncooperative Superior border of cancer higher than C7 Ulcerative EC Esophageal fistula WBC4OS4月月, ,推薦推薦SEMSSEMS置入置入Lancet, 1987. 2(8550
8、): 57-62.Am J Gastroenterol, 2008. 103(2): 458-73.Endoscopy, 2012. 44(3): 277-98.支架置入支架置入Lancet, 1987. 2(8550): 57-62.Am J Gastroenterol, 2008. 103(2): 458-73.Endoscopy, 2012. 44(3): 277-98.Stenting- ESGE Guideline膽道支架治療膽道支架治療p Palliative drainage of MBO should be first attempted -Recommendation gra
9、de Ap Insertion of a plastic stent -Recommendation grade CUnestablished diagnosis of malignancy Expected survival is 4 months 設(shè)計(jì)設(shè)計(jì)類型類型梗阻類型梗阻類型置入方式置入方式病例數(shù)目病例數(shù)目通暢時間通暢時間Yoon-2006回顧性MBOERBD36/41202dKullman-2010RCTMBOERBD188/191199dKrokidis-2011RCT膽管癌 PTC30/30166dKrokidis-2010RCT膽管癌 PTC40/40166dIsayama-2
10、004RCTMBOERBD57/55193dPark-2006回顧性MBOPTC98/108143.5dLi-2012回顧性MBOPTC37/47162dKitano-2013RCT胰腺癌ERBD60/60222d金屬支架治療金屬支架治療內(nèi)鏡/透視下普通膽道支架通暢時間:3.8-9.0個月(去除最低值和最高值)EnrollmentAll indicated participantsRandomized(n=24)Irradiation group(n=12)Control group(n=12)Analyzed(n=12)Analyzed(n=11)1:1No lostParticipant
11、flow 試驗(yàn)流程試驗(yàn)流程Withdrew(n=1) Stent patency 支架通暢率支架通暢率3 mon6 mon12 monIrradiation group(n=12)1171Control group(n=11)410Overall survivalMedian Survival 7.4 vs. 2.5 mos, Mean survival 8.03 vs. 3.36Median Survival 7.4 vs. 2.5 mos, Mean survival 8.03 vs. 3.36 mosmosComplications/Side effects Irradiation gr
12、oup (n=12)Control group(n=11)P value 30-day death030.093Severe pain120.590Fistula formation00N.DAspiration pneumonia010.478Hemobilia020.217Stent migration00N.DRestenosis00N.DData are number. Fisher exact test was used. N.D, Not done.A 73 year old man with cholangiocarcinomaprepost1 week18 mos8 mos3
13、mos A 50-year-old woman with pancreatic carcinoma5 mos 1 week 1monprea-cpostd-f術(shù)后8個月膽道造影MBO治療的最佳循證醫(yī)學(xué)證據(jù)GastroenterolResPract.2016;2016:3296801期臨床實(shí)驗(yàn)方案修改歷程期臨床實(shí)驗(yàn)方案修改歷程2013.012013.092014.092014.10多中心、3期RCT 2013年11月-2016年9月 中國,20家醫(yī)學(xué)中心 樣本量:328 隨機(jī)分組 試驗(yàn)組:膽道粒子支架 對照組:膽道裸支架受試者流程支架通暢(再狹窄)Stent Restenosis since S
14、tent ImplantationCorrelation of Restenosis with Death生存結(jié)果Overall Survival since Stent Implantation VariableIrradiation StentUncovered SEMS*P value(N=159)(N=154) number (percent)Abdominal pain01 (0.65)0.492Hemobilia1 (0.63)2 (1.30)0.618Cholangitis5 (3.14)5 (3.25)0.999Liver abscess2 (1.26)1 (0.65)0.99
15、9Ileus1 (0.63)2 (1.30)0.618Biliary leakage1 (0.63)00.999Pulmonary infection1 (0.63)1 (0.65)0.999Acute renal failure01 (0.65)0.492Any grade 3 or 4 complications11 (6.92)13 (8.44)0.466嚴(yán)重并發(fā)癥(3或4級)門靜脈粒子支架 125I粒子 粒子攜帶裝置 門靜脈支架 組裝后粒子支架粒子攜帶裝置直徑4.0mm,長度30.0mm,分為4根立柱,每根立柱含有兩個由聚四氟乙烯膜縫制成的裝載囊。支架直徑8.0mm,長度30.0mm,
16、合金絲直徑0.1mm,編織頭數(shù)8動物實(shí)驗(yàn)A對照組裸支架120天門靜脈內(nèi)膜增生程度 B、C、D不同劑量組門靜脈內(nèi)膜增生程度組間無明顯差異x100125I粒子對正常門靜脈損傷輕微術(shù)后病理術(shù)后1月術(shù)后3月術(shù)后5月術(shù)后8月(2012.10.15) 外科術(shù)后隨訪: 門靜脈右支癌栓形成并逐漸增大外支架 :10mm*60mm內(nèi)支架 :10mm*60mm125I :0.8mci *16 PS 評分:2BCLC 分期:CChild-Pugh 評分 :A(6)華法林抗凝治療 控制INR1.8-2.0術(shù)前評估:術(shù)中所用:門靜脈碘粒子支架置入術(shù)+胃冠狀靜脈栓塞術(shù)2012-10-17術(shù)后處理:隨訪粒子支架置入術(shù)后1年支
17、架處門靜脈內(nèi)徑:1.1cm支架內(nèi)血流: TAMAX=35.55cm/sCT:支架在位,肝內(nèi)門靜脈血流存在,支架內(nèi)造影劑充填良好。0102030405060術(shù)前術(shù)后1個月術(shù)后3個月術(shù)后1年ALTAST0102030405060術(shù)前術(shù)后1個月術(shù)后3個月術(shù)后1年TBIL肝功能改善:Child-Pugh 評分:B(7) A(5)門靜脈粒子支架在位、通暢術(shù)前術(shù)后3月術(shù)后1月術(shù)后6月術(shù)后1年術(shù)后34月隨訪粒子支架置入術(shù)后患者目前存活,PS評分0分,Child-Pugh A(5),門靜脈粒子支架術(shù)后生存時間36月。粒子支架周圍腫瘤、癌栓逐漸縮小、消失支架通暢時間與OS平均通暢時間:325.4天中位通暢時間:
18、302天平均生存時間:460.9天中位生存時間:374天氣管粒子支架術(shù)后4月術(shù)中動物實(shí)驗(yàn)40mm12mm0.3mci 0.6mci 0.9mci 12 4216wks Follow-upGICTECTcontrolABCDp技術(shù)成功率100%p無支架輸送、釋放、打開困難p無支架移位、粒子脫落氣管組織損傷2wks post16wks post8wks post 4wks post0.9mCi 8wks HEx2000.9mCi 16wks HEx2000.9mCi 4wks HEx2000.9mCi 2wks HEx200損傷深度與粒子劑量有關(guān),但各組間損傷評分( Injury score)無顯
19、著統(tǒng)計(jì)學(xué)差異 (F=301.607, p0.01)GroupTracheal stenosis2 weeks4 weeks8 weeks16 weeksControl group0.000.040.090.040.270.060.390.09Group A-0.010.030.050.030.250.040.350.06Group B-0.030.050.050.060.230.050.340.08Group C-0.020.050.090.060.230.080.360.09氣道狹窄No significant differences of the diameter stenosis (F=
20、0.642, p=0.595)肺肺 8wks HEx200主動脈主動脈 8wks HEx200食管食管 8wks HEx200臨近組織損傷18mm50mm, 0.8mCi*15支架置入Post-operation 3 daysPost-operation 4 monthsPost-operation 2 monthsPost-operation 8 months18mm50mm, 14mm20mm, 12mm25mm, 0.8mCi*14#術(shù)后3天 通過高級別的臨床循證醫(yī)學(xué)研究為推動粒子支架技術(shù)納入國際臨床指南與標(biāo)準(zhǔn)的主要手段; 粒子支架可以成為相關(guān)晚期惡性腫瘤治療的新標(biāo); 粒子支架臨床實(shí)踐的主要挑戰(zhàn)為放射劑量學(xué)的計(jì)劃與精確實(shí)施; 應(yīng)積極促進(jìn)與腫瘤放療醫(yī)師等相關(guān)學(xué)科的合作。125I 粒子支架的臨床地位:現(xiàn)狀與挑戰(zhàn)粒子支架的臨床地位:現(xiàn)狀與挑戰(zhàn)