Article(id=1320388974380696358, tenantId=1146029695717560320, journalId=1319373289681944729, issueId=1320388874665316750, articleNumber=null, orderNo=null, doi=10.11876/mimt202503005, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=null, receivedDateStr=null, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1792734863133, onlineDateStr=2026-10-23, pubDate=1749484800000, pubDateStr=2025-06-10, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1792734863133, onlineIssueDateStr=2026-10-23, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1792734863133, creator=13701087609, updateTime=1792734863133, updator=13701087609, issue=Issue{id=1320388874665316750, tenantId=1146029695717560320, journalId=1319373289681944729, year='2025', volume='31', issue='3', pageStart='1', pageEnd='96', issueExtLink='null', onlineDate='null', pubDate='1749484800000', pubDateStr='2025-06-10', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1792734839359, creator='13701087609', updateTime=1792746430009, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1320437489425305846, tenantId=1146029695717560320, journalId=1319373289681944729, issueId=1320388874665316750, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1320437489429500151, tenantId=1146029695717560320, journalId=1319373289681944729, issueId=1320388874665316750, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=30, endPage=34, ext={EN=ArticleExt(id=1320388974628160295, articleId=1320388974380696358, tenantId=1146029695717560320, journalId=1319373289681944729, language=EN, title=Quantitative evaluation of radiation dose characteristics in photon-counting CT, columnId=null, journalTitle=Modern Instruments & Medical Treatment, columnName=null, runingTitle=null, highlight=null, articleAbstract=

Photon-counting detector CT (PCD-CT), as the latest generation of CT technology, possesses incomparable advantages over conventional energy-integrating detector CT (EID-CT). However, there remains a research gap in the comparative evaluation of radiation dose characteristics between these two CT systems. This study systematically evaluated the signal-to-noise ratio (SNR) of iodinated contrast at various concentrations in PCD-CT phantom images, using enhanced CT scanning as the experimental model and comparing with an EID-CT system of the same architecture. The results demonstrate that under equivalent radiation dose levels, PCD-CT can improve the SNR by an average of 16.4% for iodine concentrations ranging from 2～15 mg/mL compared to EID-CT, confirming PCD-CT's advantage in low-dose imaging for iodinated contrast visualization. These findings provide quantitative evidence supporting PCD-CT's low-dose imaging superiority in contrast-enhanced CT examinations.

, authors=Zhiyong Sun^{1, 4}, Songchao Guo², Hongying Liu³, Pei Zhou², Xuesong Ye^{4, *}, authorsList=Zhiyong Sun, Songchao Guo, Hongying Liu, Pei Zhou, Xuesong Ye, authorCompany=null, correspAuthors=Xuesong Ye, authorNote=null, correspAuthorsNote=null, copyrightStatement=All copyrights in 2025 belong to the sponsor of the journal.Not content published by the journal may be reproduced or abridged without authorization., copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1320388975613821736, articleId=1320388974380696358, tenantId=1146029695717560320, journalId=1319373289681944729, language=CN, title=光子计数CT辐射剂量特性的定量评价研究, columnId=1320381056239387017, journalTitle=现代仪器与医疗, columnName=医学工程, runingTitle=null, highlight=null, articleAbstract=

光子计数探测器CT（photon-counting detector CT，PCD-CT）作为最新一代CT技术，具有传统能量积分探测器CT（energy-integrating detector CT，EID-CT）不可比拟的优势，然而在辐射剂量方面对2种CT设备的成像性能进行对比评估仍存在研究空间。本研究以增强CT扫描下碘对比剂信噪比（signal-to-noise ratio，SNR）作为切入点，基于模体实测方法，系统性地评价了PCD-CT模体图像的不同浓度碘信号SNR，并与同样架构的EID-CT进行对比。结果显示，在同等辐射剂量水平下，PCD-CT能够将不同碘浓度的SNR相比于EID-CT平均提升16.4%，验证了PCD-CT在低剂量成像中的碘剂显示优势。研究结果为PCD-CT在增强CT扫描上的低剂量成像优势提供了定量依据。

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