Effective temporal resolution and image quality of volume scanning in 320-row detector CT.

Q3 Biochemistry, Genetics and Molecular Biology Australasian Physical & Engineering Sciences in Medicine Pub Date : 2019-06-01 Epub Date: 2019-03-07 DOI:10.1007/s13246-019-00747-4

Atsushi Urikura, Takanori Hara, Tsukasa Yoshida, Eiji Nishimaru, Takashi Hoshino, Katsuhiro Ichikawa, Yoshihiro Nakaya, Masahiro Endo

{"title":"Effective temporal resolution and image quality of volume scanning in 320-row detector CT.","authors":"Atsushi Urikura, Takanori Hara, Tsukasa Yoshida, Eiji Nishimaru, Takashi Hoshino, Katsuhiro Ichikawa, Yoshihiro Nakaya, Masahiro Endo","doi":"10.1007/s13246-019-00747-4","DOIUrl":null,"url":null,"abstract":"To measure the effective temporal resolution (eTR) and image quality for three reconstruction modes for non-helical volume scanning in area detector CT. Temporal sensitivity profiles (TSPs) were obtained and the full width of the TSP at half maximum was used as an index of the eTR. Image quality was assessed by image noise and the corrected artifact index. The half reconstruction mode had a higher eTR than the full and automatic patient motion collection (APMC) reconstructions. Compared to full reconstruction, the image noise with APMC and half reconstruction were increased by 16% and 35%. The corrected artifact index was lowest with APMC. The square root of full width at tenth maximum of the TSP showed a high coefficient of determination (R2 = 0.934) for image noise. This study revealed the TSPs and eTRs for non-helical volume scanning in area detector CT. A high eTR resulted in higher image noise.","PeriodicalId":55430,"journal":{"name":"Australasian Physical & Engineering Sciences in Medicine","volume":"42 2","pages":"503-510"},"PeriodicalIF":0.0000,"publicationDate":"2019-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1007/s13246-019-00747-4","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Australasian Physical & Engineering Sciences in Medicine","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1007/s13246-019-00747-4","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2019/3/7 0:00:00","PubModel":"Epub","JCR":"Q3","JCRName":"Biochemistry, Genetics and Molecular Biology","Score":null,"Total":0}

引用次数: 0

Abstract

To measure the effective temporal resolution (eTR) and image quality for three reconstruction modes for non-helical volume scanning in area detector CT. Temporal sensitivity profiles (TSPs) were obtained and the full width of the TSP at half maximum was used as an index of the eTR. Image quality was assessed by image noise and the corrected artifact index. The half reconstruction mode had a higher eTR than the full and automatic patient motion collection (APMC) reconstructions. Compared to full reconstruction, the image noise with APMC and half reconstruction were increased by 16% and 35%. The corrected artifact index was lowest with APMC. The square root of full width at tenth maximum of the TSP showed a high coefficient of determination (R² = 0.934) for image noise. This study revealed the TSPs and eTRs for non-helical volume scanning in area detector CT. A high eTR resulted in higher image noise.

查看原文

微信好友朋友圈 QQ好友复制链接

本刊更多论文

320行CT体积扫描的有效时间分辨率和图像质量。

测量区域检测器CT非螺旋体扫描三种重建模式的有效时间分辨率(eTR)和图像质量。获得了时间灵敏度曲线(TSP)，并以半最大值时的TSP全宽度作为eTR的指标。通过图像噪声和校正后的伪影指数对图像质量进行评价。半重建模式的eTR高于完整和自动患者运动收集(APMC)重建模式。与完全重建相比，APMC和半重建的图像噪声分别提高了16%和35%。校正后的伪影指数在APMC组最低。TSP的十分之一处全宽的平方根对图像噪声具有较高的决定系数(R2 = 0.934)。本研究揭示了区域检测器CT非螺旋体积扫描的tsp和eTRs。高eTR会导致更高的图像噪声。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文去求助

来源期刊

Australasian Physical & Engineering Sciences in Medicine 工程技术-工程：生物医学

CiteScore

2.00

自引率

0.00%

发文量

审稿时长

6-12 weeks

期刊介绍： Australasian Physical & Engineering Sciences in Medicine (APESM) is a multidisciplinary forum for information and research on the application of physics and engineering to medicine and human physiology. APESM covers a broad range of topics that include but is not limited to: - Medical physics in radiotherapy - Medical physics in diagnostic radiology - Medical physics in nuclear medicine - Mathematical modelling applied to medicine and human biology - Clinical biomedical engineering - Feature extraction, classification of EEG, ECG, EMG, EOG, and other biomedical signals; - Medical imaging - contributions to new and improved methods; - Modelling of physiological systems - Image processing to extract information from images, e.g. fMRI, CT, etc.; - Biomechanics, especially with applications to orthopaedics. - Nanotechnology in medicine APESM offers original reviews, scientific papers, scientific notes, technical papers, educational notes, book reviews and letters to the editor. APESM is the journal of the Australasian College of Physical Scientists and Engineers in Medicine, and also the official journal of the College of Biomedical Engineers, Engineers Australia and the Asia-Oceania Federation of Organizations for Medical Physics.