19 patients with undiagnosed pulsating masses occurring after angiography, by-pass surgery or trauma were examined by conventional ultrasound, duplex sonography, angiodynography and, in some cases, by angiography. There were nine pseudo-aneurysms and 13 haematomas; in each case the diagnosis was made by duplex sonography and by angiodynography. Pseudoaneurysms show the following typical signs on angiodynography: 1. Typical wave form during spectrum analysis, 2. Specific blood-flow pattern into and out of the aneurysm, 3. Turbulence within the aneurysm. Angiodynography provides a reliable, rapid and exact means of diagnosis. In future, this will be able to replace more invasive procedures such as angiography.

Conventional methods of thyroid diagnosis, such as scintigraphy, differentiate between hot and cold areas, but within cold areas no distinction between malignant and benign changes is possible. Angiodynography provides a new method which gives the usual sonographic information and also indicated variations in blood-flow in the organ. Various diagnostic methods--thyroid scintigraphy, conventional sonography, fine-needle biopsy and angiodynography--have been compared in patients with focal thyroid disease. It has been shown that it is possible to differentiate between malignant and benign lesions on the basis of their vascularisation.

In situ hybridization has been performed in sections through ovaries ofAcipenser ruthenus andAcipenser güldenstädti in order to detect the rDNA sequences. Hybridization resulted in specific labelling of the “caps” of extrachromosomal DNA present in pachytene oocyte nuclei and of the chromatin granules distributed beneath the nuclear envelope in early diplotene nuclei. In the same sections, the nuclei of all ovarian cells in both species (oogonia, leptotene, and zygotene stage oocytes, follicular cells, connective tissue cells) showed a very low, but similar labelling.