WE-FG-207B-01: BEST IN PHYSICS (IMAGING): Abdominal CT with Three K-Edge Contrast Materials Using a Whole-Body Photon-Counting Scanner: Initial Results of a Large Animal Experiment

2016 ◽  
Vol 43 (6Part42) ◽  
pp. 3834-3834 ◽  
Author(s):  
M Lakshmanan ◽  
R Symons ◽  
T Cork ◽  
C Davies-Venn ◽  
K Rice ◽  
...  
Keyword(s):  
Animal Experiment ◽  
Photon Counting ◽  
Whole Body ◽  
Large Animal ◽  
Abdominal Ct ◽  
Edge Contrast ◽  
Contrast Materials ◽  
Initial Results

scholarly journals Initial results from a prototype whole-body photon-counting computed tomography system

2015 ◽  
Author(s):  
Z. Yu ◽  
S. Leng ◽  
S. M. Jorgensen ◽  
Z. Li ◽  
R. Gutjahr ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Photon Counting ◽  
Whole Body ◽  
Tomography System ◽  
Initial Results

scholarly journals Threshold-dependent iodine imaging and spectral separation in a whole-body photon-counting CT system

2021 ◽  
Author(s):  
S. Sawall ◽  
L. Klein ◽  
E. Wehrse ◽  
L. T. Rotkopf ◽  
C. Amato ◽  
...  
Keyword(s):  
Image Quality ◽  
Photon Counting ◽  
Dual Energy ◽  
Whole Body ◽  
Dual Energy Ct ◽  
Post Mortem ◽  
Tube Voltage ◽  
Spectral Separation ◽  
Dual Source ◽  
Noise Ratio

Abstract Objective To evaluate the dual-energy (DE) performance and spectral separation with respect to iodine imaging in a photon-counting CT (PCCT) and compare it to dual-source CT (DSCT) DE imaging. Methods A semi-anthropomorphic phantom extendable with fat rings equipped with iodine vials is measured in an experimental PCCT. The system comprises a PC detector with two energy bins (20 keV, T) and (T, eU) with threshold T and tube voltage U. Measurements using the PCCT are performed at all available tube voltages (80 to 140 kV) and threshold settings (50–90 keV). Further measurements are performed using a conventional energy-integrating DSCT. Spectral separation is quantified as the relative contrast media ratio R between the energy bins and low/high images. Image noise and dose-normalized contrast-to-noise ratio (CNRD) are evaluated in resulting iodine images. All results are validated in a post-mortem angiography study. Results R of the PC detector varies between 1.2 and 2.6 and increases with higher thresholds and higher tube voltage. Reference R of the EI DSCT is found as 2.20 on average overall phantoms. Maximum CNRD in iodine images is found for T = 60/65/70/70 keV for 80/100/120/140 kV. The highest CNRD of the PCCT is obtained using 140 kV and is decreasing with decreasing tube voltage. All results could be confirmed in the post-mortem angiography study. Conclusion Intrinsically acquired DE data are able to provide iodine images similar to conventional DSCT. However, PCCT thresholds should be chosen with respect to tube voltage to maximize image quality in retrospectively derived image sets. Key Points • Photon-counting CT allows for the computation of iodine images with similar quality compared to conventional dual-source dual-energy CT. • Thresholds should be chosen as a function of the tube voltage to maximize iodine contrast-to-noise ratio in derived image sets. • Image quality of retrospectively computed image sets can be maximized using optimized threshold settings.

scholarly journals A Universal Protocol for Abdominal CT Examinations Performed on a Photon-Counting Detector CT System

2020 ◽  
Vol 55 (4) ◽  
pp. 226-232
Author(s):  
Wei Zhou ◽  
Gregory J. Michalak ◽  
Jayse M. Weaver ◽  
Hao Gong ◽  
Lifeng Yu ◽  
...  
Keyword(s):  
Photon Counting ◽  
Abdominal Ct ◽  
Photon Counting Detector ◽  
Ct System ◽  
Universal Protocol

Whole-Body Positron Emission Tomography—CT: Optimized CT Using Oral and IV Contrast Materials

2002 ◽  
Vol 179 (6) ◽  
pp. 1555-1560 ◽  
Author(s):  
Gerald Antoch ◽  
Lutz S. Freudenberg ◽  
Joerg Stattaus ◽  
Walter Jentzen ◽  
Stefan P. Mueller ◽  
...  
Keyword(s):  
Positron Emission Tomography ◽  
Emission Tomography ◽  
Whole Body ◽  
Positron Emission ◽  
Contrast Materials

Noninvasive quantitative measurement of myocardial and whole-body oxygen consumption using MRI: initial results

2009 ◽  
Vol 27 (2) ◽  
pp. 147-154 ◽  
Author(s):  
Yuesong Yang ◽  
Warren D. Foltz ◽  
Naeem Merchant ◽  
Jeffrey A. Stainsby ◽  
Graham A. Wright
Keyword(s):  
Oxygen Consumption ◽  
Quantitative Measurement ◽  
Whole Body ◽  
Initial Results

Simultaneous Whole-Body PET/MR Imaging in Comparison to PET/CT in Pediatric Oncology: Initial Results

Radiology ◽  
2014 ◽  
Vol 273 (1) ◽  
pp. 220-231 ◽  
Author(s):  
Jürgen F. Schäfer ◽  
Sergios Gatidis ◽  
Holger Schmidt ◽  
Brigitte Gückel ◽  
Ilja Bezrukov ◽  
...  
Keyword(s):  
Mr Imaging ◽  
Pediatric Oncology ◽  
Whole Body ◽  
Pet Ct ◽  
Initial Results

Photon counting computed tomography: Concept and initial results

2005 ◽  
Vol 32 (2) ◽  
pp. 427-436 ◽  
Author(s):  
Polad M. Shikhaliev ◽  
Tong Xu ◽  
Sabee Molloi
Keyword(s):  
Computed Tomography ◽  
Photon Counting ◽  
Initial Results

scholarly journals Allogeneic venous grafts used for portal vein reconstruction after pancreaticoduodenectomy - large animal experiment and biomechanical study

HPB ◽  
2020 ◽  
Vol 22 ◽  
pp. S245-S246
Author(s):  
R. Palek ◽  
A. Jonasova ◽  
J. Rosendorf ◽  
P. Mik ◽  
K. Bajcurova ◽  
...  
Keyword(s):  
Portal Vein ◽  
Animal Experiment ◽  
Biomechanical Study ◽  
Large Animal ◽  
Venous Grafts ◽  
Portal Vein Reconstruction
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