Grating-based phase-contrast CT (PCCT): histopathological correlation of human liver cirrhosis and hepatocellular carcinoma specimen

2020 ◽  
Vol 73 (8) ◽  
pp. 483-487 ◽  
Author(s):  
Melanie A Kimm ◽  
Marian Willner ◽  
Enken Drecoll ◽  
Julia Herzen ◽  
Peter B Noël ◽  
...  

AimsTo correlate signal intensities in grating-based phase-contrast CT (PCCT) images obtained at a synchrotron light source and a conventional X-ray source with tissue components in human liver cirrhosis and hepatocellular carcinoma (HCC) specimen.MethodsStudy approval was obtained by the institutional review board. Human specimen of liver cirrhosis and HCC were imaged at experimental grating-based PCCT setups using either a synchrotron radiation source or a conventional X-ray tube. Tissue samples were sectioned and processed for H&E and Elastica van Gieson staining. PCCT and histological images were manually correlated. Depending on morphology and staining characteristics tissue components like fibrosis, HCC, inflammation, connective tissue and necrosis were differentiated and visually correlated with signal intensity in PCCT images using a 5-point Likert scale with normal liver parenchyma as a reference.ResultsGrating-based PCCT images of human cirrhotic liver and HCC specimen showed high soft-tissue contrast allowing correlation with histopathological sections. Signal intensities were similar in both setups independent of the nature of the radiation source. Connective tissue and areas of haemorrhage displayed the highest signal intensities, fibrotic liver tissue the lowest.ConclusionsGrating-based PCCT provides comparable results for the characterisation of human specimen of liver cirrhosis and HCC using either a synchrotron light source or a conventional X-ray tube. Due to its high soft-tissue contrast and its applicability to conventional X-ray tubes grating-based PCCT holds potential for preclinical research and virtual histology applications.

2006 ◽  
Vol 44 (01) ◽  
Author(s):  
T Mansuroglu ◽  
J Dudas ◽  
B Saile ◽  
D Batusic ◽  
G Ramadori

2017 ◽  
Vol 24 (6) ◽  
pp. 1113-1119 ◽  
Author(s):  
E. Nazaretski ◽  
H. Yan ◽  
K. Lauer ◽  
N. Bouet ◽  
X. Huang ◽  
...  

A hard X-ray scanning microscope installed at the Hard X-ray Nanoprobe beamline of the National Synchrotron Light Source II has been designed, constructed and commissioned. The microscope relies on a compact, high stiffness, low heat dissipation approach and utilizes two types of nanofocusing optics. It is capable of imaging with ∼15 nm × 15 nm spatial resolution using multilayer Laue lenses and 25 nm × 26 nm resolution using zone plates. Fluorescence, diffraction, absorption, differential phase contrast, ptychography and tomography are available as experimental techniques. The microscope is also equipped with a temperature regulation system which allows the temperature of a sample to be varied in the range between 90 K and 1000 K. The constructed instrument is open for general users and offers its capabilities to the material science, battery research and bioscience communities.


PLoS ONE ◽  
2019 ◽  
Vol 14 (1) ◽  
pp. e0210291 ◽  
Author(s):  
Karin Hellerhoff ◽  
Lorenz Birnbacher ◽  
Anikó Sztrókay-Gaul ◽  
Susanne Grandl ◽  
Sigrid Auweter ◽  
...  

2015 ◽  
Vol 22 (6) ◽  
pp. 1509-1523 ◽  
Author(s):  
Yakov I. Nesterets ◽  
Timur E. Gureyev ◽  
Sheridan C. Mayo ◽  
Andrew W. Stevenson ◽  
Darren Thompson ◽  
...  

Results are presented of a recent experiment at the Imaging and Medical beamline of the Australian Synchrotron intended to contribute to the implementation of low-dose high-sensitivity three-dimensional mammographic phase-contrast imaging, initially at synchrotrons and subsequently in hospitals and medical imaging clinics. The effect of such imaging parameters as X-ray energy, source size, detector resolution, sample-to-detector distance, scanning and data processing strategies in the case of propagation-based phase-contrast computed tomography (CT) have been tested, quantified, evaluated and optimized using a plastic phantom simulating relevant breast-tissue characteristics. Analysis of the data collected using a Hamamatsu CMOS Flat Panel Sensor, with a pixel size of 100 µm, revealed the presence of propagation-based phase contrast and demonstrated significant improvement of the quality of phase-contrast CT imaging compared with conventional (absorption-based) CT, at medically acceptable radiation doses.


Author(s):  
Carmen Berasain ◽  
Henar Hevia ◽  
Jokin Fernández-Irigoyen ◽  
Esther Larrea ◽  
Juan Caballería ◽  
...  

2020 ◽  
Vol 65 (18) ◽  
pp. 185011
Author(s):  
Eva-Maria Braig ◽  
Daniela Pfeiffer ◽  
Marian Willner ◽  
Thorsten Sellerer ◽  
Kirsten Taphorn ◽  
...  

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