The Influence of Aortography on the Radioisotope Renogram

This study concerns the influence of translumbar aortography on the radioisotope renogram. A correlation was made between the renogram tracings before and after aortography. Translumbar aortography affects radioisotope renogram tracings if the tracings were normal before aortography, in 31.5% of the studied cases. No correlation was found between the abnormal post-aortographic renogram tracings and the time elapsed from the aortography during the first week, the level of injection or the amount of the injected dye. It is recommended that the radioisotope renogram should be performed seven days after aortography for obtaining reliable tracings.