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C Baroni

Publications and source records attributed to C Baroni.

70 records · Page 4Linked to original sources
PubMedDate not supplied

A method for the quantitative evaluation of SAR distribution in deep regional hyperthermia.

The Specific Absorption Rate (SAR) distribution pattern visualization by a matrix of E-field light-emitting sensors has demonstrated to be a useful tool to evaluate the characteristics of the applicators used in deep regional hyperthermia and to perform a quality assurance programme. A method to quantify the SAR from photographs of the sensor array--the so-called 'Power Stepping Technique'--has already been proposed. This paper presents a new approach to the quantitative determination of the SAR profiles in a liquid phantom exposed to electromagnetic fields from the Sigma-60 applicator (BSD-2000 system for deep regional hyperthermia). The method is based on the construction of a 'calibration curve' modelling the light-output of an E-field sensor as a function of the supplied voltage and on the use of a reference light source to 'normalize' the light-output readings from the photos of the sensor array, in order to minimize the errors introduced by the non-uniformity of the photographic process. Once the calibration curve is obtained, it is possible, with only one photo, to obtain the quantitative SAR distribution in the operating conditions. For this reason, this method is suitable for equipment characterization and also for the control of the repeatability of power deposition in time.

Calibration↗
PubMedDate not supplied

[Thirty years of nephrology and dialysis in Mantua: results and prospects].

During the thirty years from its birth, the activity of the Department of Nephrology and Dialysis at the Carlo Poma Hospital in Mantova has witnessed the progressive increase in the number of kidney patients (300/year), uraemic patients in RRT, both peritoneal and extracorporeal (>220 patients) and kidney transplants (84). During the same period there has also been an increase in the following activities: from kidney biopsy by echocolordoppler for glomerular illness to metabolic studies for the prevention of kidney stones, therapy and follow-up for hypertension during pregnancy to echo-studies of the renal vascular bed, long-term follow-up of kidney transplant patients to territorial distribution of 4 limited-care dialysis facilities. Vascular access surgery, 100 interventions per year, and home peritoneal dialysis (CAPD and APD (today more than 50 pts in treatment) are increasing. During the last three years there has been a rapid increased in requests for CRRT in the ICU's. After acknowledging the work of all doctors active throughout the years, this presentation ends with a report on the goals for the near future.

Bibliometrics↗
PubMedDate not supplied

Abdominal aortic coarctation inducing aortic occlusion and renovascular hypertension.

Abdominal aortic coarctation is a rare, non-atherosclerotic disease. It is a functionally significant at an early age when associated with aortic branch stenosis and renovascular hypertension. The pathogenesis of aortic constrictive lesions remains unknown, but may be related to developmental error or aortic growth arrest and various hypotheses have been reported. When the renal arteries are involved by the coarctation, severe hypertension is common at an early age and in untreated patients, life-threatening complications commonly occur. Patients who reach the age of 40 years generally have the coarctation below the renal arteries but even when the renal arteries are not involved by the coarctation, renovascular disease may still occur due to secondary atherosclerosis. Aortic thrombosis secondary to abdominal aortic coarctation with renovascular disease and lower limb ischemia, occurring in a 63-year old woman, is reported.

Aorta, Abdominal↗