[Response to stress of the MLCu 250 intrauterine device]. / Comportamento a fatica del dispositivo intrauterino MLCu 250.

The study examined the response to stress of a particular type of intrauterine device (MLCu 250) which had already been evaluated due to a supposed tendency to intracavity fragmentation. The study, which was carried out using original equipment specially designed for this experiment, highlights a reduced resistance to mechanical stress in both new IUDs and in those already subjected to several months' use.

[Mechanical resistance of intrauterine devices. Experimental evaluation]. / La resistenza meccanica dei dispositivi intrauterini. Una valutazione sperimentale.

In view of the possible intracavitary breakage of an IUD, an experimental model was created to evaluate resistance to mechanical stress in new IUDs and IUDs which had been used for varying periods (6-12-24 months). The results of the study showed that, in addition to a slight inhomogeneity of the product which is probably due to incorrect industrial manufacturing procedures, there is also a correlation between the risk of breakage and intrauterine ageing which is particularly evident in some IUDS.

The assessment of IUD mechanical resistance: an experimental model.

An experimental model to assess IUD resistance to mechanical fatigue is presented by which the performance of several IUD models has been tested both new and after variable intrauterine use, up to 33 months. According to the results of this study, IUD resistance decreases exponentially with time, and IUD shape apparently affects resistance. Therefore, prolonged intrauterine use apparently increases rupture liability. Moreover, it is suggested that some IUD features can minimize chances of intrauterine rupture and/or fragmentation.

[Clinical dosimetry in xeromammography using the low dose system]. / Dosimetria clinica in xeromammografia con sistema "low dose".

The results obtained by utilizing low-dose plates in xeromammography are reported. Phantom experimental examinations and dosimetric measurements were made before using these plates. The new exposition data were then compared to those obtained with the old plates. Findings prove low-dose plates to be more sensitive--thus granting very good iconographic results with reduction of skin dose (about 30%) at FFD of 110 cm. The skin dose has been compared to that obtained with the most modern mammographs.

[Xeroductogalactography. Case reports]. / Xeroduttogalattografia. Contributo casistico.

Xerogalactography represents the most important instrumental examination in the diagnosis of the secreting breast. The authors describe the radiological findings in the ductal ectasia, intraductal papillomas and papillomatosis and carcinomas in a personal experience concerning 52 patients with mammary secretion.