The 32P uptake test used in the differential diagnosis of 912 cases yielded an accuracy rate of 94.82% for intraocular lesions behind the equator, and 85.15% for lesions of the anterior uvea. The highest error rate occurred in patients with suspected tumors of the iris and ciliary body. It seems advisable to take a 40% difference on the uptake as the limit between a positive or negative test result.

Adenoma↗

PubMed1984

Radiation dose and risk of patients through nuclear medical procedures in the GDR. A comparison of 1978 and 1981.

For the years 1978 and 1981 we compared the radiation dose for the patients examined by in vivo methods after administration of radiopharmaceuticals (27 procedures). The somatic effective dose equivalent, the effective collective dose, the somatic radiation risk, and the number of induced malignancies were calculated according to ICRP publication No. 26. All the procedures give rise to a radiation-induced somatic risk from the 4th up the 7th order. In recent years we have seen an increase of the application of 99mTc compounds and a decrease in the use of 131I-sodium iodide. A comparison of the results for the two years shows the expected reduction of radiation dose and risk.

Germany, East↗

PubMed1984

[Results and assessment of ventilation and perfusion scintigraphic studies following left-sided homologous lung transplantation in the dog].

Left-sided homologous lung transplantations (LTP) were carried out in 18 mongrel dogs. Exhalation and perfusion scannings took place for interpreting the ventilation and perfusion in the postoperative course. The per cent Xe133 storage and the exhalation per minute show the significant reduction of the ventilation in the transplants dependent on the duration of the postoperative interval. The compensation behaviour of the ventilation of the non-operated lung shows the compartment analysis. The perfusion index QL/QR with Tc99m decreased progressively in the postoperative course.--These investigation methods are slightly invasive. They allow the synoptic recording of the relationships between ventilation and perfusion. A differential diagnosis of complications after lung transplantations is not possible, however.

Animals↗

PubMed1984