Image-based deformable motion compensation for interventional cone-beam CT

计算机视觉 人工智能 运动补偿 成像体模 图像质量 运动场 计算机科学 迭代重建 物理 运动估计 光学 图像(数学)
作者
Alejandro Sisniega,Sarah Capostagno,Wojciech Zbijewski,Clifford R. Weiss,Tina Ehtiati,Jeffrey H. Siewerdsen
出处
期刊:Medical Imaging 2019: Physics of Medical Imaging 被引量:4
标识
DOI:10.1117/12.2513446
摘要

Purpose: Interventional cone-beam CT (CBCT) is used for 3D guidance in interventional radiology (IR) procedures in the abdomen, with extended presence in trans-arterial chemoembolization (TACE) interventions for liver cancer. Image quality in this scenario is challenged by complex motion of soft-tissue abdominal structures, and by long acquisition times. We propose an image-based approach to estimate complex deformable motion through a combination of locally rigid motion trajectories. Methods: Deformable motion is estimated by minimizing a multi-region autofocus cost function. Motion is considered locally rigid for each region of interest (ROI) and the deformable motion field is obtained through spatial spline-based interpolation of the local trajectories. The multi-component cost function includes two regularization terms; one to penalize abrupt temporal transitions, and another to penalize abrupt spatial changes in the trajectory. Performance of deformable motion compensation was assessed in simulation studies with a digital abdomen phantom featuring a motion-induced deformable liver in static surrounding anatomy. Spherical inserts (4 – 12 mm diameter, -100 – 100 HU contrast) were placed in the liver. Image quality was evaluated by structural similarity (SSIM) with the static image as reference. Results: Motion compensated liver images showed better delineation of structure boundaries and recovery of distorted spherical shapes compared to their motion-corrupted counterparts. Consistent increase in SSIM was observed after motion compensation for the range of motion amplitudes studied (4 mm to 10 mm), showing 11% and 26% greater SSIM for 4 mm and 10 mm motion, respectively. Conclusion: The results indicate feasibility of image-based deformable motion compensation in soft-tissue abdominal CBCT imaging.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
PDF的下载单位、IP信息已删除 (2025-6-4)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
积极灵薇发布了新的文献求助20
刚刚
77发布了新的文献求助10
3秒前
4秒前
5秒前
6秒前
6秒前
却之不恭6253完成签到,获得积分10
6秒前
周海江发布了新的文献求助10
7秒前
冰水混合物完成签到,获得积分10
7秒前
路小黑完成签到 ,获得积分10
8秒前
9秒前
9秒前
Nozomi发布了新的文献求助10
9秒前
hang完成签到,获得积分10
9秒前
带善人发布了新的文献求助10
10秒前
量子星尘发布了新的文献求助10
10秒前
10秒前
10秒前
11秒前
11秒前
11秒前
12秒前
12秒前
华仔应助song_song采纳,获得10
13秒前
齐天大圣应助五六七采纳,获得150
14秒前
老实起哞发布了新的文献求助10
14秒前
文档发布了新的文献求助10
15秒前
孙传彬发布了新的文献求助10
16秒前
无限飞丹发布了新的文献求助10
16秒前
犹豫的青烟完成签到 ,获得积分10
16秒前
17秒前
17秒前
yesonice完成签到,获得积分10
18秒前
19秒前
20秒前
zhangkx23完成签到,获得积分10
20秒前
猴子好坏完成签到,获得积分10
23秒前
24秒前
英姑应助独特乘云采纳,获得10
24秒前
24秒前
高分求助中
A new approach to the extrapolation of accelerated life test data 1000
ACSM’s Guidelines for Exercise Testing and Prescription, 12th edition 500
‘Unruly’ Children: Historical Fieldnotes and Learning Morality in a Taiwan Village (New Departures in Anthropology) 400
Indomethacinのヒトにおける経皮吸収 400
Phylogenetic study of the order Polydesmida (Myriapoda: Diplopoda) 370
基于可调谐半导体激光吸收光谱技术泄漏气体检测系统的研究 350
Robot-supported joining of reinforcement textiles with one-sided sewing heads 320
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 遗传学 基因 物理化学 催化作用 冶金 细胞生物学 免疫学
热门帖子
关注 科研通微信公众号,转发送积分 3989444
求助须知:如何正确求助?哪些是违规求助? 3531531
关于积分的说明 11254250
捐赠科研通 3270191
什么是DOI,文献DOI怎么找? 1804901
邀请新用户注册赠送积分活动 882105
科研通“疑难数据库(出版商)”最低求助积分说明 809174