Photon-counting CT: Technical Principles and Clinical Prospects

被引：814

作者：

Willemink, Martin J. ^{[1
,3
]}

Persson, Mats ^{[1
,4
]}

Pourmorteza, Amir ^{[6
,7
]}

Pelc, Norbert. ^{[1
,4
,5
]}

Fleischmann, Dominik ^{[1
,2
]}

机构：

[1] Stanford Univ, Sch Med, Dept Radiol, 300 Pasteur Dr,S-072, Stanford, CA 94305 USA

[2] Stanford Univ, Sch Med, Stanford Cardiovasc Inst, 300 Pasteur Dr,S-072, Stanford, CA 94305 USA

[3] Univ Med Ctr Utrecht, Dept Radiol, Utrecht, Netherlands

[4] Stanford Univ, Dept Bioengn, Stanford, CA 94305 USA

[5] Stanford Univ, Dept Elect Engn, Stanford, CA 94305 USA

[6] Emory Univ, Sch Med, Dept Radiol, Atlanta, GA 30322 USA

[7] Emory Univ, Sch Med, Dept Imaging Sci & Biomed Informat, Atlanta, GA USA

来源：

RADIOLOGY | 2018年 / 289卷 / 02期

基金：

美国国家卫生研究院;

关键词：

DUAL-ENERGY CT; BONE-MARROW LESIONS; TO-NOISE RATIO; COMPUTED-TOMOGRAPHY; SPECTRAL CT; CONTRAST AGENTS; IODINE QUANTIFICATION; HIP-FRACTURES; PERFORMANCE; DETECTOR;

D O I：

10.1148/radiol.2018172656

中图分类号：

R8 [特种医学]; R445 [影像诊断学];

学科分类号：

1002 ; 100207 ; 1009 ;

摘要：

Photon-counting CT is an emerging technology with the potential to dramatically change clinical CT. Photon-counting CT uses new energy-resolving x-ray detectors, with mechanisms that differ substantially from those of conventional energy-integrating detectors. Photon-counting CT detectors count the number of incoming photons and measure photon energy. This technique results in higher contrast-to-noise ratio, improved spatial resolution, and optimized spectral imaging. Photon-counting CT can reduce radiation exposure, reconstruct images at a higher resolution, correct beam-hardening artifacts, optimize the use of contrast agents, and create opportunities for quantitative imaging relative to current CT technology. In this review, the authors will explain the technical principles of photon-counting CT in nonmathematical terms for radiologists and clinicians. Following a general overview of the current status of photon-counting CT, they will explain potential clinical applications of this technology. (c) RSNA, 2018.

引用

页码：293 / 312

页数：20

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