A digital radiography apparatus that is implemented on a computed tomography (CT) scanner allows for the fast recording of dilution curves of thin sections of a CT scan. Densities are plotted vs. time, and structures can be allocated by reference to the corresponding CT image. Intravenous bolus passage in the larger vessels, and enhancement in the organs was determined in patients. Modulations that resulted from breathing posed problems, but those that resulted from pulsation may yield useful additional information. Possible clinical applications are discussed.
In a case of prenatal diagnosis of lymphangioma (hygroma) of the neck the results of sonographic and computer tomographic investigations were compared. It was shown that the methods are complimentary and lead to very similar conclusions. The first investigation should be by ultra-sound because of the lack of radiation. The computer tomography is then indicated with specific questions in mind and the radiation exposure can be minimized. In the presented case the combination of sonography and computer tomography permitted a prognosis of poor operability of the lesion. Since the prognosis cannot be determined with complete certainty prior to delivery the obstetrician and neonatalogist need to proceed with the possibility of a treatable anomaly in mind. The neckopsy findings in our case confirmed the inoperability of the lesion.
Der Machtmissbrauch und der narzisstische Hochmut heterosexueller Männer haben nicht nur zu berechtigter Empörung, sondern teilweise auch zu einem pauschalen Verdacht gegenüber männlicher Sexualität geführt. Aber heterosexuelle Männlichkeit ist vielfältiger und vielschichtiger, als sie mitunter dargestellt wird. Und Heterosexualität ist in der unbewussten Vorstellung an jeder Form der Sexualität beteiligt. Daher ist es ein Anliegen dieses Textes, ein psychoanalytisches Konzept der Männlichkeit zu entwickeln, das die Dialektik zwischen früher, existentieller Abhängigkeit und phallischer Selbstvergewisserung aufnimmt und dadurch zu einem differenzierten, möglichst ideologiefreien Verständnis der Sexualität beiträgt.
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