Guido Zavattini

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We report the experimental observation of a light polarization rotation in vacuum in the presence of a transverse magnetic field. Assuming that data distribution is Gaussian, the average measured rotation is (3.9 +/- 0.5) x 10(-12) rad/pass, at 5 T with 44 000 passes through a 1 m long magnet, with lambda = 1064 nm. The relevance of this result in terms of(More)
The results are reported of a multicenter randomized study of the effectiveness of maternal administration of betamethasone versus ambroxol, a substance of the group of the benzylamines, for prevention of RDS in preterm infants. Women of 27 to 34 weeks gestation with threatened premature delivery or planned premature delivery were admitted to the trial.(More)
The capability of the scintimammography to diagnose subcentimeters sized tumors was increased by the employment of a dedicated gamma camera. The introduction of small field of view camera, based on pixellated scintillation array and position sensitive photomultiplier, allowed to enhance the geometric spatial resolution and contrast of the images due to(More)
In vivo optical instruments designed for small animal imaging generally measure the integrated light intensity across a broad band of wavelengths, or make measurements at a small number of selected wavelengths, and primarily use any spectral information to characterize and remove autofluorescence. We have developed a flexible hyperspectral imaging(More)
In a 6-month, double-blind multicenter trial conducted over the winter, the effects of daily administration of ambroxol retard (75 mg) were compared with those of placebo in preventing exacerbations and improving symptoms and clinical signs in chronic bronchitis patients. The trial was completed by 110 patients in the ambroxol group and by 104 in the(More)
During and after menopause the skin shows up clearly how the lack of estrogen affects tissues, and menopause can in fact be considered a "multisystemic" disorder of connective tissue. The low menopausal estrogen levels combined with age-related skin changes, accelerating skin aging. This affects both the epidermis and the dermis: fibroblasts not only become(More)
UNLABELLED The preparation, characterization, and first biologic evaluation in rats of a novel class of monocationic (99m)Tc heart imaging agents are reported. The complexes are represented by the general formula [(99m)Tc(N)(PNP)(L)](+), where L is the monoanionic form of a dithiocarbamate ligand of the type [R(1)(R(2))-N-C(=S)S](-), PNP is a diphosphine(More)
The interference of a chronic disease on the aging process reduces patients efficiency in confronting everyday life events and their Quality of Life (QOL). The purpose of this study was to examine the interaction between cognitive problems and emotional difficulties as related to several chronic diseases commonly present among aged patients in contributing(More)
We are developing a hyperspectral imaging system aimed at imaging fluorescent molecules in two different contexts: In vivo 3-D molecular imaging of mice and multi-fluorophore imaging of 2-D tissue samples. The main concept is to add high resolution spectral information to the intensity data to improve imaging capabilities. The system is based on an imaging(More)