The Natural History of Coronary Artery StenosisRösch, Josef; Antonovic, Ruza; Trenouth, Roland S.; Rahimtoola, Shabudin H.; Sim, David N.; Dotter, Charles T.
doi: 10.1148/119.3.513pmid: 935382
Comparison of sequential large film coronary angiograms was performed for 58 patients with coronary artery disease, and no coronary surgery, to determine the relationship between the location, type, and degree of stenoses and their tendency to progress. Of 230 stenoses, 76 (33%) showed progression and 154 (67%) remained stable on the follow-up studies. Progression occurred in 38 (66%) patients. A statistically significant higher tendency to progress was found with tubular stenosis with ulcerating plaques (100%) and stenoses with collateral circulation (58%). A significant linear trend for progression was also found with the increasing number of risk factors of coronary disease. The above-average progression tendency of stenoses of the right coronary artery, tubular irregular stenoses, and Grade 2 stenoses, was not statistically significant. Index terms Coronary angiography Coronary arteries, stenosis Copyrighted 1976 by the Radiological Society of North America, Inc.
Saturation Kinetics and Choleretic Effects of lodoxamate and lodipamideBerk, Robert N.; Loeb, Peter M.; Cobo-Frenkel, Adriana; Barnhart, James L.
doi: 10.1148/119.3.529pmid: 947095
The biliary excretion and choleretic effects of iodoxamate (Cholevue) and iodipamide (Cholografin) were compared in unanesthetized dogs with biliary fistulas in order to assess the potential of the two contrast agents for use in intravenous cholangiography. For any equimolar infusion rate, more iodoxamate was secreted in the bile than iodipamide. The volume of bile flow (choleresis) associated with the excretion of iodoxamate and iodipamide was the same. At the constant basal bile flow maintained in these studies, there was no difference in the maximum biliary concentration of the two compounds. With the presently recommended doses, it is unlikely that iodoxamate will offer a striking improvement over iodipamide for intravenous cholangiography in patients with normal liver function. Index Terms Cholangiography, contrast media Contrast Media, comparative studies
Collateral Circulation to an Ischemic KidneyYune, Heun Y.; Klatte, Eugene C.
doi: 10.1148/119.3.539pmid: 935384
A review of 301 consecutive abdominal arteriograms given to patients suspected of having occlusive arterial diseases was conducted. In 99 patients, 35% or more stenosis of the renal artery was demonstrated; of these, 40 showed demonstrable collaterals to the ischemic kidney. The adrenal and lumbar arteries contributed four times more frequently than the periureteric arteries to the collateral circulation. Characteristic ureteral notching from the periureteric artery collateral was noted in only 50% of the cases. Intrarenal collaterals were observed and appeared to contribute to the preservation of the size and function of the affected kidney. Index Terms Kidneys, blood supply Kidneys, size Renal angiography Renal arteries, stenosis
Page Kidney: An Unusual Cause of HypertensionScott, Peter L.; Yune, Heun Y.; Weinberger, Myron H.
doi: 10.1148/119.3.547pmid: 935385
A case of classical Page kidney with emphasis on radiographic findings is presented. Onset of hypertension following trauma associated with angiographic findings of attenuation, splaying and stretching of the intrarenal vessels on the arterial phase with a definite delay in transit time through the parenchyma and a non-homogeneous nephrogram should make the diagnosis of Page kidney or constricting subcapsular mass the most logical consideration. Index Terms Hypertension Kidneys, hemorrhage Kidneys, wounds and injuries Veins, renal