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小探头超声内镜联合多层螺旋CT术前预测胃黏膜下肿瘤切除方式的临床价值 被引量:9
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作者 余杰杰 方海明 +1 位作者 付莲 章礼久 《中国内镜杂志》 2018年第9期23-27,共5页
目的探讨小探头超声内镜(MPS)联合多层螺旋CT(MSCT)术前预测胃黏膜下肿瘤(SMT)切除方式的价值。方法回顾性分析胃SMT临床病理特征、MPS联合MSCT特征及手术方式等资料。结果共40例胃SMT。其中,男16例,女24例,平均年龄(54.0±14.2)岁... 目的探讨小探头超声内镜(MPS)联合多层螺旋CT(MSCT)术前预测胃黏膜下肿瘤(SMT)切除方式的价值。方法回顾性分析胃SMT临床病理特征、MPS联合MSCT特征及手术方式等资料。结果共40例胃SMT。其中,男16例,女24例,平均年龄(54.0±14.2)岁。胃底SMT占52.5%,基于MPS及MSCT特征,术前诊断胃腔内生长型37例,胃腔内外生长型2例,腔外生长型1例,除外1例副脾外术后均获得证实,MPS联合MSCT对胃SMT生长方式诊断准确率97.5%(39/40)。MPS提示来源于固有肌层低回声占37例,黏膜下层3例,除外1例副脾外,MPS联合MSCT术前对肿瘤来源层次判断准确率为97.5%(39/40)。MPS诊断间质瘤36例,术后病理证实为间质瘤27例,MPS诊断间质瘤准确率75.0%(27/36)。30例选择内镜切除术,内镜手术成功率96.7%(29/30),1例中转腹腔镜手术,内镜切除瘤体直径0.5~5.0 cm,平均(1.7±1.0)cm。腹腔镜切除11例,成功率100.0%(11/11),瘤体直径2.0~7.5 cm,平均(4.3±1.8)cm。与腹腔镜手术比较,内镜切除瘤体大小明显小于腹腔镜手术(P<0.05),术后平均住院日明显短于腹腔镜(P<0.05),两种切除方式术后随访均未见复发。结论 MPS联合MSCT术前诊断SMT肿瘤来源层次、生长方式、诊断准确率高,能够有效指导肿瘤切除方式的选择。 展开更多
关键词 小探头超声 多层螺旋CT 胃黏膜下肿瘤 内镜切除术 腹腔镜手术
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A New Type of Combination Forecasting Method Based on PLS——The Application of It in Cigarette Sales Forecasting 被引量:1
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作者 Biao Luo Liang Wan +1 位作者 Wei-Wei Yan jie-jie yu 《American Journal of Operations Research》 2012年第3期408-416,共9页
Cigarette market is a kind of monopoly market which is closed loop running, it depends on the plan mechanism to schedule producing, supplying and selling, but the “bullwhip effect” still exists. So it has a fundamen... Cigarette market is a kind of monopoly market which is closed loop running, it depends on the plan mechanism to schedule producing, supplying and selling, but the “bullwhip effect” still exists. So it has a fundamental significance to do sales forecasting work. It needs to considerate the double trend characteristics, history sales data and other main factors that affect cigarette sales. This paper depends on the panel data of A province’s cigarette sales, first we established three single forecasting models, after getting the predicted value of these single models, then using the combination forecasting method which based on PLS to predict the province’s cigarette sales of the next year. The results show that the prediction accuracy is good, which could provide a certain reference to cigarette sales forecasting in A province. 展开更多
关键词 PLS ARMA Time Series METHOD Combination Forecasting METHOD SALES FORECAST
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