Ordered-subset simultaneous algebraic reconstruction technique(OS-SART)in a prototype digital breast

来源 :The 15th Asia-Oceania Congress of Medical Physics (AOCMP2015 | 被引量 : 0次 | 上传用户:wkadjx
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
Purpose:Digital breast tomosynthesis(DBT) has been considered as an innovative imaging modalitybecause it can solve the problem of poor depth resolution in conventional digital mammography by utilizing multiple slices of breast volume.Similar to breast computed tomography(CT),projection datawhich are generated from DBT also needed to be reconstructed in order to produce axial cross sectionalimages of scanned breast.
其他文献
醒脾益气法是陈定潜主任中医师治疗慢性肝炎以及肝衰竭的常用治法,体现了他对慢性重型肝病化湿益气的学术思想.陈老以传统中医理论"见肝之病,知肝传脾,当先实脾"为基础,融入"醒脾益气"特色,创制了中药方剂"肝脾疏络饮"、配合现代人工肝等技术救治慢性重型病毒性肝炎,经前期临床研究发现可以减少人工肝次数,促进肝功能恢复、缓解患者的消化道症状、改善生活质量、延长患者生存期、降低病死率.本课题采用随机对照法进一
会议
目的:本研究拟通过对大凉山西昌地区彝汉混居区艾滋病病毒感染者/病人进行中医体质辨识、分类,为此类地区艾滋病中医药临床救治提供相应的研究依据。方法:采用现状调查的方法,根据患者回答情况,如实填写《中医体质辨识量表》,并将所填内容输入计算机“中医体质辨识软件”上海国臣软件公司提供判定体质类型。
目的 观察断经缩瘤汤治疗围绝经期子宫肌瘤肾阴虚血瘀证的临床疗效.方法 将确诊为围绝经期子宫肌瘤患者60 例按随机、阳性药物对照原则分为治疗组和对照组,治疗组服用断经缩瘤汤,1 日1 剂,1 日3 次,对照组服用米非司酮,每日1 次,每次12.5mg,睡前服.12 周1 疗程.
目的:探讨针刺百会穴对AD 模型鼠大脑皮质组织小胶质细胞分泌前炎症介质TNFα的影响。方法:Aβ1-42 侧脑室注射造AD 模型大鼠,针刺百会穴治疗21 天,免疫荧光观察大鼠大脑皮质小胶质细胞分泌TNFα 的情况。
目的:肩部巨大韧带样纤维瘤手术切除难度巨大,本研究讨论其手术入路选择及评估外科疗效.方法:2003年6月~2012年6月21例肩部巨大韧带样型纤维瘤病患者,11例初诊,10例具有外院手术史.肿瘤大小7.0cm~19.0cm,平均10.5cm.在已有肩部分区基础上将肩部分为四区,Ⅰ区为肩胛下肌以前,包含胸大、小肌,Ⅱ区为腋后壁肌区,Ⅲ区为肩胛区,Ⅳ区为三角肌区.
Introduction:Polymer gels are 3-dimensional(3D) dosimetric tools used to evaluate radiation dose-relatedradiation-induced polymerization.When using a polymer gel as a phantom,it is possible to measure
会议
Purpose: Segmental scanning protocol of Multi-energy computed tomography(MECT)is an easy-to-implement and no-extra dose induced way realized in conventiaonal CT,but the reconstruced image was degraded
INTRODUCTION The artifacts due to physiologic motion when using the Cartesian strategy of magnetic resonance imaging are well known [1] and many techniques of reducing the motion artifacts were presen
Purpose:Head motion in PET/CT leads to artifacts due to the mismatch of PET and CT images.This work aims at reducing motion artifacts in PET image reconstruction.Methods:The correction method for head
Purpose:It has been known that images reconstructed with filtered back projection(FBP) techniques areoften inadequate in CT.Iterative reconstruction(IR) has the potential to allow reducing dose whilem
会议