[New radiodiagnostic methods from the aspects of the dental surgeon]. / Novsie rádiodiagnostické metódy z hladiska stomatológa.

Based on data in the literature and their own experience the authors summarize eleven imaging systems using ionizing energy and fifteen non-X-ray techniques from the aspect of the dental surgeon. Perspective methods include CT, DSA, xeroradiography, electrography in addition to classical X-ray techniques incl. intervention radiodiagnosis. As to non-X-ray techniques sonography (echography, USG), thermography and magnetic resonance prove useful.

Experiences with bone scanning in differential diagnosis of local bone lesions.

Because some primary tumours often metastasize to the skeleton, their early detection is essential for further therapy and prognosis. Radiographic examination is not sufficiently sensitive for early detection of bone metastases, because it can reveal the typical sign of metastases--decalcification--only after loss of 30-50% of the original amount of calcium from bone tissue (18). Bone scanning with bone-seeking radiopharmaceuticals represents a viable technique for early detection of bone lesions, especially early metastatic disease. The indication for this examination is undoubtedly in breast cancer, cancer of prostate, lung, thyroid gland, hypernephroma, melanoma, plasmocytoma and malignant lymphomas. After good clinical experience of the authors with bone scanning in detection of secondary bone tumours in known primary localisations (9, 14, 15, 10), they tried to elaborate in this paper indicative criteria for bone scanning in patients with suspicious secondary tumourous lesions by unknown primary localisations.

Value of lymphangiography in the diagnosis and treatment of lymphangioma.

On the basis of the author's own results and literary data emphasis is laid on the significance of lymphography for confirming or establishing a diagnosis, for determining the extent of a lesion and for proper considerations on indications for surgical treatment. Relymphography following a surgical intervention is capable of showing whether the latter had been successful and of revealing foci of recurrence. The case history bears on two histologically verified lymphangioma -- in the first case of the soft parts of the right leg, in the second of the soft part of the left thoracic wall, the armpit and the mediastinum. In both cases, relapse after repeated surgical interventions was verified by direct lymphography from superficial lymph vessels of the foot and the cubital fossa.