国际生物医学工程杂志
國際生物醫學工程雜誌
국제생물의학공정잡지
INTERNATIONAL JOURNAL OF BIOMEDICAL ENGINEERING
2015年
2期
124-128,后插1-后插2,封3
,共7页
CT图像%金属伪影%插值%迭代重建%投影修补
CT圖像%金屬偽影%插值%迭代重建%投影脩補
CT도상%금속위영%삽치%질대중건%투영수보
CT image%Metal artifacts%Interpolation%Iterative reconstruction%Sinogram inpainting
计算机断层成像(CT)技术已经广泛应用于临床诊断,它的高分辨率人体解剖信息对很多疾病的诊断提供了很大的帮助.然而,在患者体内有金属植入物的情况下,CT图像中往往伴随着大量黑色带状或明亮的放射条纹状伪影,统称为金属伪影.金属伪影使临床疾病诊断变得不再可靠,在放射治疗中也会给剂量分布的计算带来误差.消除CT图像中金属伪影的研究具有重要意义,对目前主要的金属伪影消除算法进行了总结和讨论.
計算機斷層成像(CT)技術已經廣汎應用于臨床診斷,它的高分辨率人體解剖信息對很多疾病的診斷提供瞭很大的幫助.然而,在患者體內有金屬植入物的情況下,CT圖像中往往伴隨著大量黑色帶狀或明亮的放射條紋狀偽影,統稱為金屬偽影.金屬偽影使臨床疾病診斷變得不再可靠,在放射治療中也會給劑量分佈的計算帶來誤差.消除CT圖像中金屬偽影的研究具有重要意義,對目前主要的金屬偽影消除算法進行瞭總結和討論.
계산궤단층성상(CT)기술이경엄범응용우림상진단,타적고분변솔인체해부신식대흔다질병적진단제공료흔대적방조.연이,재환자체내유금속식입물적정황하,CT도상중왕왕반수착대량흑색대상혹명량적방사조문상위영,통칭위금속위영.금속위영사림상질병진단변득불재가고,재방사치료중야회급제량분포적계산대래오차.소제CT도상중금속위영적연구구유중요의의,대목전주요적금속위영소제산법진행료총결화토론.
Computed tomography (CT) has been widely used in clinical diagnosis and made a great contribution to diagnosis by providing anatomical information with high-resolution.However,when metal implants exist in patients' body,reconstructed CT images are seriously interfered by metal artifacts.Metal artifacts are usually expressed as many dark and bright radiant streak artifacts which seriously reduce diagnosis reliability and bring errors into the calculation of dose distribution in radiotherapy.Therefore,the study of metal artifact reduction (MAR)is of great importance.This article reviews main methods on MAR developed in recent years,and give deep analysis on some of the methods.
