1,721,012 research outputs found
Unusual Findings of Langerhans Cell Histocytosis in a Young Asymptomatic Patient: Case Report
No full textSolid Renal Masses
No full textIn the last few decades, the new diagnosis of renal masses has become more common owing to the widespread use of cross-sectional imaging, especially ultrasound (US) and computed tomography (CT). Most incidental renal masses can be diagnosed with confidence and either ignored or treated without further investigations
Fine optimization of Josephson critical current in SQUID devices by thermal annealing
No full textIn the present article an experimental study regarding optimization and fine-tuning and of Superconducting QUantum Interference Device (SQUID) parameters by a thermal annealing is presented. It allows to modify the parameters in order to meet a specific application or to adjust the device parameters to reduce the magnetic field noise preventing the work instability conditions due to a critical current value that exceed the expected one. In particular, we carried out the measurements of the critical current and the voltage swing as a functions of the annealing temperatures or time showing the effect of such procedures on the magnetic field spectral density of the SQUID magnetometers The experimental results demonstrate that it is possible to optimize the main device parameters reducing the SQUID noise to a suitable value improving the stability of working operations
US Contrast Media in Penile Disease
No full textGreyscale and colour Doppler ultrasound (US) are recognised as the first imaging modality for the evaluation of penile disorders, due to its characteristics including real-time imaging, straightforward operation, and cost-efficiency. However, interpretations can sometimes be unclear. CEUS is effective in assessing the presence or lack of vascularity in organs and lesion
Incidentally detection of non-palpable testicular nodules at scrotal ultrasound: what is new?
No full textThe increased use of ultrasound in patients with urological and andrological symptoms has given an higher detection of intra-testicular nodules. Most of these lesions are hypoechoic and their interpretation is often equivocal. Recently, new ultrasound techniques have been developed alongside of B-mode and color-Doppler ultrasound. Although not completely standardized, contrast-enhanced ultrasound (CEUS) and tissue elastography (TE), added to traditional ultrasonography, can provide useful information about the correct interpretation of incidentally detected non-palpable testicular nodules. The purpose of this review article is to illustrate these new techniques in the patient management
Magnetic response of damaged carbon fibre reinforced plastics measured by a HTS-SQUID magnetometer
No full textControlled states of damage were imparted to carbon fibre reinforced plastic panels, simply supporting them on a circular ring and applying a quasi-statically increasing transverse load at the centre. The damage state was controlled by interrupting the loading stage at predetermined values of the deflection. After mechanical tests, the panels were non-destructively inspected by a highly sensitive superconductive magnetometer (HTS SQUID), from which the maps of the parallel component of the magnetic field above the sample surface were obtained. A destructive analysis of the specimens was also carried out by optical microscopy, to assess damage features. The existence of a defect in the material was clearly signalled by a distortion in the magnetic field, even when an elastic behaviour could be guessed from the load-displacement curve. Until the loading conditions only resulted in failures in the matrix, the slope of the SQUID response along a line-scan was linearly dependent on the maximum energy applied to the specimen during the mechanical tests. The dependence of the slope on the energy was strongly altered when fibre failures were induced in the laminate. The magnetometer response was also influenced by the coil excitation frequency. The results obtained at different frequencies indicate that the optimum frequency can vary, depending on the scope of the non-destructive inspection under concern
Analysis of low-velocity impact damages in reinforced carbon fiber composites by HTS-SQUID magnetometers
No full textKidney Stones
No full textUrolithiasis is a frequent cause of emergency department visits. The classic presentation is an abrupt, unilateral severe pain in the flank that radiates inferiorly
Renal Trauma
No full textUrinary tract injury occurs in approximately 10% of all abdominal trauma patients, and the kidney is the most commonly injured organ in the urinary tract [1]. Renal traumatic lesions may be secondary to direct or indirect trauma and they can be blunt or penetrating injury
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