Highlights
- Highlights
- Synchrotron-Radiation Microtomography Of Bowed Stringed Intrumens
- Investigation of urinary calculi by synchrotr on radiation X-ray microtomography
- Quantitative analysis of X-ray microtomography images of geomaterials
- Breast computed tomography with the PICASSO detector
- Mammography with Synchrotron Radiation
- Learning the finer points
- All Pages
Synchrotron-Radiation MicroCT For The Non-destructive Structural Evaluation Of Bowed Stringed Intrumens.
Rigon, doi link.
Feasibility studies have been carried out at the SYRMEP beamline of the Elettra synchrotron laboratory in Trieste with the aim of demonstrating the advantages and evaluating the effectiveness of synchrotron radiation X-ray microtomography as a suitable technique for non-destructive analysis of bowed stringed instruments. The particular geometry of the X-ray beam and the use of a novel detector allow structural evaluation of the main details of the instruments with unprecedented richness of details. This, in turn, will allow precise dendrochronological investigation of historical violins, as well as the characterization of their structure, defects, wood thickness and density. |
The combined approach of synchrotron radiation tomography, by the use of large detectors coupled with laminar X-ray beams and the use of local area SYNCHROTRON-RADIATION MICROTOMOGRAPHY FOR THE NON-DESTRUCTIVE STRUCTURAL EVALUATION OF BOWED STRINGED INSTRUMENTS Luigi Rigon, Erik Vallazza, Fulvia Arfelli, Renata Longo, Diego Dreossi, Anna Bergamaschi, Bernd Schmitt, Rongchang Chen, Maria Assunta Cova, Roberto Perabò, Marco Fioravanti, Lucia Mancini, Ralf Hendrik Menk, Nicola Sodini, Giuliana Tromba, Franco Zanini e-PS, 2010, 7, 71-77 |
Investigation of the microstructure and mineralogical composition of urinary calculi fragments by synchrotron radiation X-ray microCT: a feasibility study
The outcomes from the feasibility study on utilization of synchrotron radiation X-ray microtomography (SR-lCT) to investigate the texture and the quantitative mineralogical composition of selected calcium oxalate-based urinary calculi fragments are presented.
J. Kaiser et. al. Urol Res (2011) 39:259–267
The outcomes from the feasibility study on utilization of synchrotron radiation X-ray microtomography (SR-lCT) to investigate the texture and the quantitative mineralogical composition of selected calcium |
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Investigation of the microstructure and mineralogical composition of urinary calculi fragments by synchrotron radiation X-ray microtomography: a feasibility studyand Jozef Kaiser , Marke´ta Hola´, Michaela Galiova´, Karel Novotny´, Viktor Kanicky´, Petr Martinec Jirˇı´ Scˇucˇka, Francesco Brun, Nicola Sodini, Giuliana Tromba, Lucia Mancini, Tamara Korˇistkova, Urol Res (2011) 39:259–267 DOI 10.1007/s00240-010-0343-9 doi link |
Quantitative analysis of X-ray microtoCT images of geomaterials: Application to volcanic rocks
X-ray computed microtomography is an excellent tool for the three-dimensional analysis of rock microstructure.
D. Zandomeneghi et. al. Geosphere; December 2010; v. 6; no. 6;
X-ray computed microtomography is an excellent tool for the three-dimensional analysis of rock microstructure. Digital images are acquired, visualized, and processed to identify and measure several discrete features and constituents of rock samples, by means of mathematical algorithms and computational methods. In this paper, we present digital images of volcanic rocks collected with X-ray computed microtomography techniques and studied by means of a software library, called Pore3D, custom-implemented at the Elettra Synchro tron Light Laboratory of Trieste (Italy). Using the Pore3D software, we analyzed the fabrics and we quantifi ed the characteristics of the main constituents (vesicles, crystals, and glassy matrix) of four different types of pyroclasts: frothy pumice, tube pumice, scoria , and “crystalline” scoria. We identifi ed the distinctive features of these different types of volcanic rocks. The frothy pumices show vesicles that coalesce in isotropic aggregates, especially toward the sample interior, while the scoriae have a low porosity and an abundance of isolated vesicles. In the “crystalline” scoria sample most of the vesicle separation is due to the presence of crystals of different types, while the tube pumice shows an anisotropic distribution of vesicles and crystals at the microscale, as also observed at the scale of the hand sample. Quantitative analysis and textural information may supply an additional tool to investigate the eruptive processes and the origin of volcanic rocks. |
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Breast computed tomography with the PICASSO detector: A feasibility study
The SYRMEP (Synchrotron Radiation for Medical Physics) collaboration has performed, for the first time in the world, a clinical program of mammography with synchrotron radiation.
L. Rigon et. al. Nuclear Instruments and Methods in Physics Research A 628 (2011) 419–422
The SYRMEP (Synchrotron Radiation for Medical Physics) collaboration has performed, for the first time in the world, a clinical program of mammography with synchrotron radiation. This program provided excellent results, although utilizing a commercial screen-film system as a detector. The PICASSO (Phase Imaging for Clinical Application with Silicon detector and Synchrotron radiation) project has developed a detector prototype capable of fully exploiting the peculiar characteristics of the synchrotron source, utilizing silicon microstrip sensors illuminated in the edge-on geometry and operated in single-photon counting. In this paper the potential of the PICASSO detector in breast computed tomography was evaluated by means of custom phantoms. Very encouraging results have been obtained with severe dose constrains as far as both spatial and contrast resolution are concerned. Moreover, the capability of detecting phase contrast effects was demonstrated, albeit with a higher delivered dose. |
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Mammography with Synchrotron Radiation
To prospectively evaluate the diagnostic contribution of mammography with synchrotron radiation in patients with questionable or suspicious breast abnormalities identified at combined digital mammography (DM) and ultrasonography (US).
E. Castelli et al., Volume 259: Number 3—June 2011
To prospectively evaluate the diagnostic contribution of mammography with synchrotron radiation in patients with questionable or suspicious breast abnormalities identified at combined digital mammography (DM) and ultrasonography (US).
The ethics committee approved this prospective study, and written informed consent was obtained from all patients. Mammography with synchrotron radiation was performed with a phase-detection technique at a synchrotron radiation laboratory. Forty-nine women who met at least one of the inclusion criteria (palpable mass, focal asymmetry, architectural distortion, or equivocal or suspicious mass at DM; none clarified at US) were enrolled. Forty-seven women (mean age, 57.8 years ± 8.8 [standard deviation]; age range, 43-78 years) completed the study protocol, which involved biopsy or follow-up for 1 year as the reference standard.
Breast Imaging Reporting and Data System (BI-RADS) scores of 1-3 were considered to indicate a negative result, while scores 4-5 were considered to indicate a positive result. The visibility of breast abnormalities and the glandular parenchymal structure at DM and at mammography with synchrotron radiation was compared by using the Wilcoxon signed rank test.
In 29 of the 31 patients with a final diagnosis of benign entity, mammography with synchrotron radiation yielded BI-RADS scores of 1-3. In 13 of the remaining 16 patients with a final diagnosis of malignancy, mammography with synchrotron radiation yielded BI-RADS scores of 4-5. Therefore, a sensitivity of 81% (13 of 16 patients) and a specificity of 94% (29 of 31 patients) were achieved with use of the described BI-RADS dichotomization system.
These study results suggest that mammography with synchrotron radiation can be used to clarify cases of questionable or suspicious breast abnormalities identified at DM.
Mammography with Synchrotron Radiation: First Clinical Experience with Phase-Detection Technique, E. Castelli , M. Tonutti, F. Arfelli, R. Longo, E. Quai, L. Rigon, D. Sanabor , F. Zanconati , D. Dreossi , A. Abrami , E. Quai, P. Bregant , K. Casarin , V. Chenda, R. Menk , T. Rokvic, A. Vascotto , G. Tromba , M. Cova ,doi link
Learning the finer points
Researchers had used the synchrotron micro-tomography technique to unlock a Guadagini’s tiniest secret, showing also a full and detailed description of the different modifications applied to the violin during the years.
F. Zanini , The Strad January vol 123 pp. 36-41
X-ray computed tomography (CT) is becoming a common technique for the structural analysis of ancient manufacts of cultural relevance, providing luthiers, art historians, conservators and restorators with a unique tool for the characterization of musical instruments. CT-derived information aid in the replication of original masterpieces and have an important role in the valuation, insurance, and identification of valuable stringed instruments. |
Unfortunately, conventional tomographic systems are not able to reach the desired spatial resolution (i.e. between 10 and 50 microns) or are able to analyse a whole instruments due to the reduced field of view of X-ray detectors and/or the dimensions of the commercial X-ray hutches. After the first feasibility studies, carried out at the SYRMEP beamline of the Elettra synchrotron laboratory in Trieste, showing the advantages and evaluating the effectiveness of synchrotron radiation X-ray microtomography, the first analysis of a instrument of historical importance (the 1735 violin by Giovan Battista Guadagnini) has shown the full potential of the technique. Retrieve articleLearning the finer points, F. Zanini The Strad January vol 123 pp. 36-41 |