scholarly journals Clinical study in phase- contrast mammography: image-quality analysis

2014 ◽  
Vol 372 (2010) ◽  
pp. 20130025 ◽  
Author(s):  
Renata Longo ◽  
Maura Tonutti ◽  
Luigi Rigon ◽  
Fulvia Arfelli ◽  
Diego Dreossi ◽  
...  
Keyword(s):  
Clinical Study ◽  
Synchrotron Radiation ◽  
Image Quality ◽  
Digital Mammography ◽  
Phase Contrast ◽  
Medical Physics ◽  
University Hospital ◽  
Quality Analysis ◽  
Radiology Department ◽  
Contrast Imaging

The first clinical study of phase-contrast mammography (PCM) with synchrotron radiation was carried out at the Synchrotron Radiation for Medical Physics beamline of the Elettra synchrotron radiation facility in Trieste (Italy) in 2006–2009. The study involved 71 patients with unresolved breast abnormalities after conventional digital mammography and ultrasonography exams carried out at the Radiology Department of Trieste University Hospital. These cases were referred for mammography at the synchrotron radiation facility, with images acquired using a propagation-based phase-contrast imaging technique. To investigate the contribution of phase-contrast effects to the image quality, two experienced radiologists specialized in mammography assessed the visibility of breast abnormalities and of breast glandular structures. The images acquired at the hospital and at the synchrotron radiation facility were compared and graded according to a relative seven-grade visual scoring system. The statistical analysis highlighted that PCM with synchrotron radiation depicts normal structures and abnormal findings with higher image quality with respect to conventional digital mammography.

Image Quality Analysis of X-ray Grating Interferometer Using Integrating-bucket Method

2020 ◽  
Vol 64 (2) ◽  
pp. 20503-1-20503-5
Author(s):  
Faiz Wali ◽  
Shenghao Wang ◽  
Ji Li ◽  
Jianheng Huang ◽  
Yaohu Lei ◽  
...  
Keyword(s):  
Image Quality ◽  
Phase Contrast ◽  
Quality Analysis ◽  
Phase Contrast Imaging ◽  
Phase Image ◽  
Contrast Imaging ◽  
High Quality ◽  
Image Quality Analysis ◽  
X Ray ◽  
Grating Interferometer

Abstract Grating-based x-ray phase-contrast imaging has the potential to enhance image quality and provide inner structure details non-destructively. In this work, using grating-based x-ray phase-contrast imaging system and employing integrating-bucket method, the quantitative expressions of signal-to-noise ratios due to photon statistics and mechanical error are analyzed in detail. Photon statistical noise and mechanical error are the main sources affecting the image noise in x-ray grating interferometry. Integrating-bucket method is a new phase extraction method translated to x-ray grating interferometry; hence, its image quality analysis would be of great importance to get high-quality phase image. The authors’ conclusions provide an alternate method to get high-quality refraction signal using grating interferometer, and hence increases applicability of grating interferometry in preclinical and clinical usage.

Improved middle-ear soft-tissue visualization using synchrotron radiation phase-contrast imaging

2017 ◽  
Vol 354 ◽  
pp. 1-8 ◽  
Author(s):  
Mai Elfarnawany ◽  
Seyed Alireza Rohani ◽  
Soroush Ghomashchi ◽  
Daniel G. Allen ◽  
Ning Zhu ◽  
...  
Keyword(s):  
Synchrotron Radiation ◽  
Soft Tissue ◽  
Middle Ear ◽  
Phase Contrast ◽  
Phase Contrast Imaging ◽  
Contrast Imaging ◽  
Radiation Phase

scholarly journals Synchrotron Radiation-based X-ray phase-contrast imaging of the aortic walls in acute aortic dissection

2020 ◽  
Vol 1 ◽  
pp. 81-91
Author(s):  
Koki Yokawa ◽  
Masato Hoshino ◽  
Naoto Yagi ◽  
Yutaka Nakashima ◽  
Kazunori Nakagawa ◽  
...  
Keyword(s):  
Synchrotron Radiation ◽  
Aortic Dissection ◽  
Phase Contrast ◽  
Acute Aortic Dissection ◽  
Phase Contrast Imaging ◽  
Contrast Imaging ◽  
X Ray

ULTRAFAST X-RAY PHASE CONTRAST IMAGING OF A GASLESS REACTIVE SYSTEM USING 3RD GENERATION SYNCHROTRON RADIATION

2009 ◽  
Author(s):  
R. V. Reeves ◽  
J. D. E. White ◽  
E. M. Dufresne ◽  
K. Fezzaa ◽  
S. F. Son ◽  
...  
Keyword(s):  
Synchrotron Radiation ◽  
Phase Contrast ◽  
Phase Contrast Imaging ◽  
Reactive System ◽  
Contrast Imaging ◽  
X Ray

Improving image quality in laboratory x-ray phase-contrast imaging

2017 ◽  
Author(s):  
F. De Marco ◽  
M. Marschner ◽  
L. Birnbacher ◽  
M. Viermetz ◽  
P. Noël ◽  
...  
Keyword(s):  
Image Quality ◽  
Phase Contrast ◽  
Phase Contrast Imaging ◽  
Contrast Imaging ◽  
X Ray
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