[The importance of circulation time in intravenous angiography: Schad's method and its practical execution].
The intravenous arteriography, both in traditional radiology or tomography and in computed tomography (angio-TC) requires the administration of large quantities of contrast medium and the application of intense doses of radiation to a patient. The method of Schad is based on a suitable technique of injection and on the timing of the time-lag between the intravenous injection and the radiological exposure on the basis of circulation time. Therefore the radiological exposure may be effected in the moment of the maximum concentration of the contrast medium in the arterial district which is taken into consideration, with the advantage of a large reduction of the quantity of iodate substance which is administered and of the radiological exposures. A new automatic injector which permits the execution of the method is briefly described.
D000328:Adult; D000792:Angiography / Q000379:methods*; D001776:Blood Circulation Time; D003287:Contrast Media; D004307:Dose-Response Relationship, Radiation; D006801:Humans; D013997:Time Factors; D014057:Tomography, X-Ray Computed / Q000379:methods
D003287:Contrast Media
Importanza del tempo di circolo in arteriografia per via venosa: il metodo di Schad e sua realizzazione pratica.