Dual-Energy Computed Tomography Gemstone Spectral Imaging

2016 ◽  
Vol 40 (2) ◽  
pp. 283-289
Author(s):  
Ching-Li Cheng ◽  
Hsiao-Huang Chang ◽  
Shih-Chi Ko ◽  
Pei-Jung Huang ◽  
Shan-Yang Lin
Keyword(s):  
Computed Tomography ◽  
Spectral Imaging ◽  
Dual Energy ◽  
Dual Energy Computed Tomography ◽  
Gemstone Spectral Imaging

scholarly journals Added value of iodine-specific imaging and virtual non-contrast imaging for gastrointestinal assessment using dual-energy computed tomography

2021 ◽  
Vol 11 ◽  
pp. 68
Author(s):  
Madison R. Kocher ◽  
Mark D. Kovacs ◽  
William Stewart ◽  
Brian P. Flemming ◽  
Shaun Hinen ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Clinical Practice ◽  
Spectral Imaging ◽  
Dual Energy ◽  
Gastrointestinal System ◽  
Added Value ◽  
Contrast Imaging ◽  
Dual Energy Computed Tomography ◽  
Case Examples ◽  
Pictorial Essay

Dual-energy computed tomography (DECT) has become increasingly available and can be readily incorporated into clinical practice. Although DECT can provide a wide variety of spectral imaging reconstructions, most clinically valuable information is available from a limited number of standard image reconstructions including virtual non-contrast and iodine overlay. The combination of these standard reconstructions can be used for specific diagnostic tasks that provide added value over traditional CT protocols. In this pictorial essay, the added value of these standard reconstructed images will be demonstrated by case examples for diseases specifically related to the gastrointestinal system.

scholarly journals Factors Associated with Bone Erosion in Patients with Gout: A Dual-Energy Gemstone Spectral Imaging Computed Tomography Study

2021 ◽  
Author(s):  
Xiaofei Liu ◽  
Xiaohuan Zhang ◽  
Shiyan Mo ◽  
Dongfeng Liang ◽  
Baige Li ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Uric Acid ◽  
Serum Uric Acid ◽  
Disease Duration ◽  
Bone Erosion ◽  
Spectral Imaging ◽  
Dual Energy ◽  
Bone Interface ◽  
Factors Associated ◽  
Gemstone Spectral Imaging

ABSTRACT Objective This study aimed to assess the factors influencing bone erosion in patients with gout using dual-energy gemstone spectral imaging CT. Methods We compared the clinical data, laboratory indices, and tissue urate levels at the monosodium urate (MSU)-bone interface measured by dual-energy gemstone spectral imaging computed tomography of 87 gout patients with (n=41) and without (n=46) bone erosion. Logistic regression analysis was used to investigate the risk factors associated with bone erosion. Results In total, 47.1% of patients with gout had bone erosion. The disease duration, serum uric acid, tissue urate levels, and the presence of tophi were significantly higher (p<0.05) in gout patients with bone erosion than in those without bone erosion. Longer disease duration (OR=1.11, 95% CI: 1.00–1.24, p<0.05) and increased tissue urate levels (OR=1.01, 95% CI: 1.00–1.02, p<0.05) were independently associated with bone erosion. Tissue urate levels at the MSU-bone interface were correlated with the presence of tophi (r=0.62, p<0.001), bone erosion (r=0.51, p<0.001), renal calculus (r=0.24, p=0.03), and serum uric acid levels (r=0.23, p=0.03). Conclusion This study found that longer disease duration and elevated tissue urate concentrations at the MSU-bone interface were associated with bone erosion in patients with gout.

Single-Source Dual-Energy Computed Tomography Detects Disk Injury in Patients with Vertebral Fractures

2019 ◽  
Author(s):  
Torsten Diekhoff ◽  
Michael Fuchs ◽  
Nils Engelhard ◽  
Kay-Geert Hermann ◽  
Michael Putzier ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Vertebral Fractures ◽  
Dual Energy ◽  
Single Source ◽  
Dual Energy Computed Tomography

Dual energy computed tomography angiography of a pulmonary embolized port catheter fragment

2011 ◽  
Vol 12 (1) ◽  
pp. 62-63 ◽  
Author(s):  
Thomas Henzler ◽  
Steffen Diehl ◽  
Susanne Jochum ◽  
Tim Sueselbeck ◽  
Stefan O Schoenberg ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Computed Tomography Angiography ◽  
Dual Energy ◽  
Port Catheter ◽  
Dual Energy Computed Tomography

scholarly journals Dual-Energy Computed Tomography of the Liver: Uses in Clinical Practices and Applications

Diagnostics ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 161
Author(s):  
Masakatsu Tsurusaki ◽  
Keitaro Sofue ◽  
Masatoshi Hori ◽  
Kosuke Sasaki ◽  
Kazunari Ishii ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Liver Tumors ◽  
Energy Levels ◽  
Ct Scanning ◽  
Dual Energy ◽  
Liver Imaging ◽  
X Rays ◽  
Clinical Practices ◽  
Dual Energy Computed Tomography ◽  
Noise Ratio

Dual-energy computed tomography (DECT) is an imaging technique based on data acquisition at two different energy settings. Recent advances in CT have allowed data acquisitions and simultaneous analyses of X-rays at two energy levels, and have resulted in novel developments in the field of abdominal imaging. The use of low and high X-ray tube voltages in DECT provide fused images that improve the detection of liver tumors owing to the higher contrast-to-noise ratio (CNR) of the tumor compared with the liver. The use of contrast agents in CT scanning improves image quality by enhancing the CNR and signal-to-noise ratio while reducing beam-hardening artifacts. DECT can improve detection and characterization of hepatic abnormalities, including mass lesions. The technique can also be used for the diagnosis of steatosis and iron overload. This article reviews and illustrates the different applications of DECT in liver imaging.

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