(1967). Influence of Gestation and Lactation on Kadiostrontium-Induced Malignancies in Mice: I. Incidence, Distribution and Characteristics of 90Sr-Induced Malignancies. Acta Radiologica: Diagnosis: Vol. 6, No. 1, pp. 33-52.
(1967). Effects of Radiostrontium and Roentgen Rays on Germ Cells of Male Mice. Acta Radiologica: Diagnosis: Vol. 6, No. 3, pp. 209-213.
In a double blind study of 100 consecutive patients routinely referred for urography, a conventional contrast medium (Isopaque cerebral) was compared at a dose of 180 mg I/kg body weight with a low osmolar contrast medium (Hexabrix 160) at a dose of 90 mg I/kg body weight. In spite of 50 per cent dose reduction, equally good diagnostic effect was achieved with Hexabrix as with the conventional contrast medium.
The cochlear aqueduct follows a course through the petrous pyramid that varies from straight and steeply vertical to a curvilinear and horizontal. Its course and length are correlated to the pneumatization of the pyramid and also to the volume of the jugular fossa. These two factors influence the radiographic reproduction of the cochlear aqueduct, especially in computed tomography in the axial transverse projection but to a far lesser degree in multidirectional tomography.
Four cases with lesions suspected to be low-grade intracerebral tumours but later proved to be cavernous haemangiomas are described. The patients were examined with contrast enhanced CT and with positron emission tomography (PET). The lesions were partly calcified with a mild or no mass effect and a slight contrast enhancement at CT. There were signs of disrupture of the blood-lesion barrier also on radionuclide studies. PET with 11C-methionine and 11C-glucose showed a normal or decreased accumulation of the tracers. This combination of findings has not been encountered in intracranial tumours. As a comparison, one case of glioblastoma is described. In this patient, the CT findings suggested a cavernous haemangioma. However, PET showed a markedly increased accumulation of 11C-methionine, which is compatible with brain tumour but not with haemangioma.
Stercoral obstruction in a young woman with disseminated phaeochromocytoma was diagnosed and treated successfully using an enema of isosmolar iohexol (Omnipaque) and 1% polysorbate 80 (Tween 80) without complication. Surgical intervention was thus avoided. A low osmolality water-soluble contrast medium (iohexol 150 mg I/ml) with a wetting agent (1% Tween 80) was used because a barium suspension would have inspissated, exacerbating the constipation and a hyperosmolar contrast medium might have precipitated a hypertensive crisis and destablised her critical salt and water balance. References
