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Biomedical subjects

J F Viallet

Publications and source records attributed to J F Viallet.

At least 55 records · Page 3Linked to original sources
PubMed1978

[Early diagnosis of staphylococcic infection in epidural space : radiologic contribution (author's transl)].

Infection of the épidural space was demonstrated on clinic (cauda equina compression) and radiology. Three investigations are considered and compared : Dimer X radiculography, lumbar phlebography, duroliopaque myelography. The transfemoral arcending lumbar catheterization of the epidural veins precise the compression by staphylococcic external pachymeningitis. No liquid is introduced in cerebro spinal fluid : there is not risk of infectious arachnoiditis. Myelography with positive contrast (duroliopaque: ethyl monoiodostearate) is much attractive but it is a procedure not easy to perform, even badly tolerated by the patient. For these reasons the lumbar phlebography, easily performed, can be realised in first intention.

Catheterization↗
PubMed1977

[The use of arteriography in the pharmacological study of a vasodilator substance].

The administration of a vasodilator substance is followed by the development of a higher contrast gradient in a given film in comparison with a reference X-ray carried out in the same subject under comparable technical conditions. Comparative densitometric measurement of the contrast gradient in the two successive arteriographic series, one with and one without the injection, arterial or venous, of a vasodilator substance (Couramine-Rutine) represents a valuable method for the study in man of the action of the substance in a visceral territory. The present study was limited to the kedney (79 cases), ans the territory of the superior mesenteric (46 cases). The absence of any densitometric difference between the two renal series at too low doses of vasodilator substance leads to the supposition of the possibility of a threshold dose of pharmacological activity.

Absorptiometry, Photon↗