Research Topics
| Andrea BassiSummaryAffiliation: Politecnico di Milano Country: Italy Publications
| Collaborators
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Detail Information
Publications
Optical biopsy of bone tissue: a step toward the diagnosis of bone pathologiesAntonio Pifferi
ULTRAS INFM and IFN CNR, Dipartimento di Fisica Politecnico di Milano, Piazza Leonardo da Vinci 32, I 20133 Milan, Italy
J Biomed Opt 9:474-80. 2004....
Detection of inhomogeneities in diffusive media using spatially modulated lightAndrea Bassi
Dipartimento di Fisica, Politecnico di Milano, Milan, Italy
Opt Lett 34:2156-8. 2009..Fast three-dimensional localization of an absorbing object based on finite-element analysis reconstruction is demonstrated with experimental data...- Temporal propagation of spatial information in turbid mediaAndrea Bassi
Italian Institute of Technology, Dipartimento di Fisica, Politecnico di Milano, Piazza Leonardo da Vinci 32, Milano, 20133, Italy
Opt Lett 33:2836-8. 2008..We demonstrate that high spatial frequency information appears in the early time-gated signal, whereas low frequencies persist for longer times... - In vivo label-free three-dimensional imaging of zebrafish vasculature with optical projection tomographyAndrea Bassi
Politecnico di Milano, Dipartimento di Fisica, Piazza Leonardo da Vinci 32, Milan, 20133, Italy
J Biomed Opt 16:100502. 2011..We therefore demonstrate an in vivo, 3-D optical imaging technique that, without the use of any labeling, is able to reconstruct and visualize the vascular network of transparent and weakly scattering living specimens... - Time-resolved spectrophotometer for turbid media based on supercontinuum generation in a photonic crystal fiberAndrea Bassi
National Laboratory for Ultrafast and Ultraintense Optical Science, I 20133 Milan, Italy
Opt Lett 29:2405-7. 2004..The results were similar to those obtained with previous discrete wavelength systems, whereas the full spectrum (610-810 nm) acquisition time was as short as 1 s owing to the parallel acquisition... - Time-gated optical projection tomographyAndrea Bassi
Istituto di Fotonica e Nanotecnologie IFN CNR, Politecnico di Milano Dipartimento di Fisica, Piazza Leonardo da Vinci 32, I 20133 Milano, Italy
Opt Lett 35:2732-4. 2010..The method provides high-resolution reconstruction of scattering samples and is suitable for three-dimensional (3D) imaging of biological models... 
Spatial shift of spatially modulated light projected on turbid mediaAndrea Bassi
Dipartimento di Fisica, Politecnico di Milano, Piazza Leonardo da Vinci, Milano, Italy
J Opt Soc Am A Opt Image Sci Vis 25:2833-9. 2008..Experimental validation by measurements performed on liquid phantoms is presented...- Fully automated time domain spectrometer for the absorption and scattering characterization of diffusive mediaAntonio Pifferi
ULTRAS CNR INFM and IFN CNR, Politecnico di Milano, Piazza Leonardo da Vinci 32, I 20133 Milan, Italy
Rev Sci Instrum 78:053103. 2007..Finally, an example of application of the instrument to the spectroscopy of powders is presented... - Dynamic time-resolved diffuse spectroscopy based on supercontinuum light pulsesJohannes Swartling
ULTRAS INFM, IFN CNR, Dipartimento di Fisica, Politecnico di Milano, P L da Vinci 32, I 20133 Milano, Italy
Appl Opt 44:4684-92. 2005..We also present the first in vivo real-time dynamic spectral measurements showing tissue oxygenation changes in the arm of a human subject... - In vivo time-resolved reflectance spectroscopy of the human foreheadDaniela Comelli
Centre of Ultrafast and Ultraintense Optical Science, Consiglio Nazionale delle Ricerche, Istituto Nazionale de Fisica della Materia, Politecnico di Milano, Milano, Italy
Appl Opt 46:1717-25. 2007..e., scalp and skull) than to deeper layer ones (white and gray matter). In particular, for the shorter interfiber distances, the recovered values can be assumed as a good estimate of the optical properties of the first layer... - Feasibility of white-light time-resolved optical mammographyAndrea Bassi
ULTRAS CNR INFM and CNR IFN, Politecnico di Milano, Dipartimento di Fisica, Piazza Leonardo da Vinci 32, 20133 Milano, Italy
J Biomed Opt 11:054035. 2006..Furthermore, measurements on a tissue-like sample demonstrate detection and characterization of inclusions... - Time-gated optical projection tomography allows visualization of adult zebrafish internal structuresLuca Fieramonti
Department of Physics, Politecnico di Milano, Milano, Italy
PLoS ONE 7:e50744. 2012..The paper shows that TGOPT is particularly suited for imaging the skeletal system and nervous structures of adult zebrafish... - Performance assessment of photon migration instruments: the MEDPHOT protocolAntonio Pifferi
Laboratorio Nazionale per l Ottica Ultra rapida e Ultra intensa, Dipartimento di Fisica e Istituto di Fotonicae Nanotecnologie, Consiglio Nazionale delle Ricerche, Politecnico di Milano, I 20133 Milan, Italy
Appl Opt 44:2104-14. 2005..This protocol was applied to a total of 8 instruments with a set of 32 phantoms, covering a wide range of optical properties... - Spectroscopic time-resolved diffuse reflectance and transmittance measurements of the female breast at different interfiber distancesAntonio Pifferi
Politecnico di Milano, ULTRAS INFM, INF CNR, Dipartimento di Fisica, P L da Vinci 32, I 20133, Milano, Italy
J Biomed Opt 9:1143-51. 2004..The intrasubject variations are larger for the scattering data than the absorption data; this is consistent with different spatial localization of the measurements of these parameters, which is explained by the photon migration theory... - Time-resolved diffuse optical spectroscopy up to 1700 nm by means of a time-gated InGaAs/InP single-photon avalanche diodeIlaria Bargigia
Politecnico di Milano, Dipartimento di Fisica, Piazza Leonardo da Vinci 32, 20133 Milano, Italy
Appl Spectrosc 66:944-50. 2012..4 cm(-1) where the relative error is 17%. A first measurement performed on lipids is presented: the absorption spectrum shows three major peaks at 1200 nm, 1400 nm, and 1700 nm... - A virtual source pattern method for fluorescence tomography with structured lightNicolas Ducros
Politecnico di Milano, Dipartimento di Fisica e Instituto di Fotonica e Nanotecnologie, Piazza Leonardo da Vinci 32, I 20133 Milan, Italy
Phys Med Biol 57:3811-32. 2012..This new method provides a significant increase of the contrast of the reconstruction and also a reduction of the reconstruction error, especially when virtual wavelet source patterns are considered... - Diffuse optical spectroscopy of breast tissue extended to 1100 nmPaola Taroni
Politecnico di Milano, Dipartimento di Fisica and Consiglio Nazionale delle Ricerche, Istituto di Fotonica e Nanotecnologie, Piazza Leonardo da Vinci 32, Milan, 20133, Italy
J Biomed Opt 14:054030. 2009.... - Multiple-view fluorescence optical tomography reconstruction using compression of experimental dataNicolas Ducros
Instituto di Fotonica e Nanotecnologie IFN CNR Dipartimento di Fisica, Politecnico di Milano, Piazza Leonardo da Vinci 32, I 20133 Milan, Italy
Opt Lett 36:1377-9. 2011..The reconstruction algorithm is based on the finite element method, and hence is suitable for samples of any arbitrary shape... - Fluorescence molecular tomography of an animal model using structured light rotating view acquisitionNicolas Ducros
Politecnico di Milano, Istituto di Fotonica e Nanotecnologie, Dipartimento di Fisica, Piazza Leonardo da Vinci 32, 20133 Milan, Italy
J Biomed Opt 18:20503. 2013..To the best of our knowledge this is the first time that FMT based on a rotating-view scheme with structured illumination and image compression has been applied to animals... - Time-resolved diffuse optical spectroscopy: a differential absorption approachPaola Taroni
Dipartimento di Fisica, Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133 Milan, Italy
Appl Spectrosc 64:1220-6. 2010.... - Full-wavelet approach for fluorescence diffuse optical tomography with structured illuminationNicolas Ducros
Instituto di Fotonica e Nanotecnologie IFN CNR Dipartimento di Fisica, Politecnico di Milano, Piazza Leonardo da Vinci 32, I 20133 Milan, Italy
Opt Lett 35:3676-8. 2010..This method, validated on experimental data, enables us to significantly reduce the acquisition and computation times with respect to the classical scanning approach. Therefore, it could be particularly suited for in vivo applications... - Determination of the optical properties of anisotropic biological media using an isotropic diffusion modelAlwin Kienle
Institut fur Lasertechnologien in der Medizin und Messtechnik, Helmholtzstrasse 12, D 89081 Ulm, Germany
J Biomed Opt 12:014026. 2007..Contrarily, the derived reduced scattering coefficient depends strongly on the measurement direction in both domains. Measurements of the steady-state and time-resolved reflectance from bovine tendon confirm the theoretical findings... - Phantom validation and in vivo application of an inversion procedure for retrieving the optical properties of diffusive layered media from time-resolved reflectance measurementsFabrizio Martelli
Dipartimento di Fisica dell Università degli Studi di Firenze and Istituto Nazionale per la Fisica della Materia, Via G Sansone 1, 50019 Sesto Fiorentino, Florence, Italy
Opt Lett 29:2037-9. 2004..The first layer thickness could be retrieved with an error less than 50%. An example of retrieval of the optical properties of muscle from in vivo measurements during an arterial occlusion is shown...