WE-A-BRF-01: Dual-Energy CT Imaging in Diagnostic Imaging and Radiation Therapy

2014 ◽  
Vol 41 (6Part28) ◽  
pp. 486-487
Author(s):  
S Molloi ◽  
B Li ◽  
F Yin ◽  
H Chen
Keyword(s):  
Radiation Therapy ◽  
Diagnostic Imaging ◽  
Dual Energy ◽  
Ct Imaging ◽  
Dual Energy Ct

scholarly journals Dual-Energy CT Imaging of Tumor Liposome Delivery After Gold Nanoparticle-Augmented Radiation Therapy

Theranostics ◽  
2018 ◽  
Vol 8 (7) ◽  
pp. 1782-1797 ◽  
Author(s):  
Jeffrey R. Ashton ◽  
Katherine D. Castle ◽  
Yi Qi ◽  
David G. Kirsch ◽  
Jennifer L. West ◽  
...  
Keyword(s):  
Radiation Therapy ◽  
Gold Nanoparticle ◽  
Dual Energy ◽  
Ct Imaging ◽  
Dual Energy Ct

scholarly journals First Asian population study of stereotactic body radiation therapy for ventricular arrhythmias

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Li-Ting Ho ◽  
Jenny Ling-Yu Chen ◽  
Hsing-Min Chan ◽  
Yu-Cheng Huang ◽  
Mao-Yuan Su ◽  
...  
Keyword(s):  
Radiation Therapy ◽  
Three Dimensional ◽  
Asian Population ◽  
Target Volume ◽  
Dual Energy ◽  
Detection Sensitivity ◽  
Dual Energy Ct ◽  
Stereotactic Body Radiation ◽  
Integrated Boost ◽  
Monitoring Treatment

AbstractWe report the first Asian series on stereotactic body radiation (SBRT) for refractory ventricular arrhythmia (VA) in Taiwanese patients. Three-dimensional electroanatomic maps, delayed-enhancement magnetic resonance imaging (DE-MRI), and dual-energy computed tomography (CT) were used to identify scar substrates. The main target volume was treated with a single radiation dose of 25 Gy and the margin volume received 20 Gy using simultaneous integrated boost delivered by the Varian TrueBeam system. Efficacy was assessed according to VA events recorded by an implantable cardioverter-defibrillator (ICD) or a 24-h Holter recorder. Pre- and post-radiation therapy imaging studies were performed. From February 2019 to December 2019, seven patients (six men, one woman; mean age, 55 years) were enrolled and treated. One patient died of hepatic failure. In the remaining six patients, at a median follow-up of 14.5 months, the VA burden and ICD shocks significantly decreased (only one patient with one ICD shock after treatment). Increased intensity on DE-MRI might be associated with a lower risk for VA recurrence, whereas dual-energy CT had lower detection sensitivity. No acute or minimal late adverse events occurred. In patients with refractory VA, SBRT is associated with a marked reduction in VA burden and ICD shocks, and DE-MRI might be useful for monitoring treatment effects.

Abstract P327: Utilizing Iodine Contrast Extravasation Post Reperfusion and Dual Energy Ct Imaging to Predict Risk of Hemorrhagic Conversion in Acute Stroke Patients

Stroke ◽  
2021 ◽  
Vol 52 (Suppl_1) ◽  
Author(s):  
Tri Huynh* ◽  
Niran Vijayaraghavan* ◽  
Hannah Branstetter ◽  
Natalie Buchwald ◽  
Justin De Prey ◽  
...  
Keyword(s):  
Acute Stroke ◽  
Infarct Volume ◽  
Reperfusion Therapy ◽  
Dual Energy ◽  
Ct Imaging ◽  
Dual Energy Ct ◽  
Stroke Patients ◽  
Post Intervention ◽  
Contrast Extravasation ◽  
Post Contrast

Introduction: Hyperintense acute reperfusion marker (HARM) has been identified on post-contrast magnetic resonance imaging (MRI) to be a marker of hemorrhagic conversion (HC) post reperfusion therapy in acute stroke patients. We have previously described a case where MRI HARM was mimicked on post contrast computed topography (CT) imaging in an acute stroke patient post reperfusion. Dual-Energy (DECT) allows for differentiation between acute blood and iodine contrast extravasation (ICE), and thus can have utility when ICE is present. Here we sought to validate whether post-intervention ICE/CT hyperdensity reperfusion maker (CT HARM), and contrast subtracted on DECT is associated with HC in acute stroke patients. Method: Data was obtained from our Institutional Review Board approved stroke admission database from January 2017 to November 2019, including ischemic stroke patients that received thrombolysis or thrombectomy, had evaluable images within 24 hours of admission, and received a DECT. Ischemic volumes of the stroke was measured on diffusion-weighted image (DWI). ICE was measured on CT head and DECT using the freehand 3D region of interest tool on the Visage Imaging PACS System. Susceptibility weighted MRI sequences were used to grade HC. Data analysis was conducted with regression modeling. Results: A total of 82 patients were included, 49% women, median age 73 (interquartile range (IQR), 61- 77), admission NIHSS 12 (IQR, 7 - 21), 24 hour change in NIHSS 4 (IQR, 0 -13), glucose 125 (IQR, 106 -158), creatinine 1.0 (IQR, 0.8 - 1.2), infarct volume 50.6 ± 7.1 mL, 48% treated with thrombectomy, 7% with PH-1 or PH-2 identified on MRI, and 56% with MCA infarcts. ICE volume was 2.6 ± 1.0 mL and DECT volume was 2.2 ± 1.1mL. ICE increased the likelihood of MRI confirmed PH-1 or PH-2 hemorrhagic conversion (odds ratio (OR) 14.34, 95% confidence interval (CI) 5.74 - 22.94) and decreased likelihood of increase in NIHSS at 24 hours (OR 0.20, 95% CI 0.01 to 0.40). There were no other significant associations with ICE or DECT volumes. Conclusion: Our results are supportive of our proposed association between CT HARM and risk of HC. More studies are needed to study whether quantitative of DECT can be predictive of stroke outcomes post reperfusion therapy.

scholarly journals Investigating a novel split-filter dual-energy CT technique for improving pancreas tumor visibility for radiation therapy

2018 ◽  
Vol 19 (5) ◽  
pp. 676-683 ◽  
Author(s):  
Lianna D. Di Maso ◽  
Jessie Huang ◽  
Michael F. Bassetti ◽  
Larry A. DeWerd ◽  
Jessica R. Miller
Keyword(s):  
Radiation Therapy ◽  
Dual Energy ◽  
Dual Energy Ct ◽  
Ct Technique ◽  
Pancreas Tumor

Dual-energy CT to detect recurrent HCC after TACE: Initial experience of color-coded iodine CT imaging

2013 ◽  
Vol 82 (4) ◽  
pp. 569-576 ◽  
Author(s):  
Jeong-Ah Lee ◽  
Woo Kyoung Jeong ◽  
Yongsoo Kim ◽  
Soon-Young Song ◽  
Jinoo Kim ◽  
...  
Keyword(s):  
Dual Energy ◽  
Ct Imaging ◽  
Dual Energy Ct ◽  
Initial Experience
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