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Öğe Contrast media induces hypoperfusion in kidneys with ureteral stone: Doppler us study(Elsevier Science Inc, 2005) Ünal, B.; Kara, S.; Bilgili, Y.We aimed to assess the hemodynamic effects of nonionic low-osmolarity contrast media (CM) on kidneys with ureteral stone (KUS). A total of 16 patients with KUS (group A) and 25 control patients (group B) were evaluated with Doppler ultrasound (US) bilaterally for main (MRA), interlobar (ILA) and arcuate renal arteries (ARA), before and 15 min after CM for IV pyelography. Peak systolic (PSV) and end diastolic velocities (EDV) and resistance index (RI) were measured. Data were analyzed by ANOVA and t-test. In group A. CM induced increase in PSV of MRA of contralateral kidney (p = 0.021) and decrease in PSV of ILA (p = 0.024) decrease in PSV and EDV and increase in RI of ARA of KUS (p = 0.010. 0.005. 0.027. respectively). CM induced hypoperfusion in KUS and compensatory changes in contralateral kidneys. similar to the effects of diuresis or mannitol. We conclude that the effect of CM on KUS is related to its osmolar load. (C) 2005 World Federation for Ultrasound in Medicine Biology.Öğe Simple evaluation of liver size on erect abdominal plain radiography(W B Saunders Co Ltd, 2004) Ünal, B.; Bilgili, Y.; Kocacikli, E.; Bagcier, S.; Huvaj, S.; Kara, S.We aimed to develop criteria of hepatomegaly on erect plain radiography by comparing the results with those of ultrasonography. Right-sided longitudinal length and second lumbar vertebra ratio, of 22 cm and 6, respectively, detected hepatomegaly with over 90% accuracy, with higher success rates for the lumbar vertebral ratio. Corresponding values for normal size were 20 cm and 5. Sonography revealed high correlation with these results. We concluded that liver size measured on erect plain radiography was larger than but similar to that measured by sonography, and that right-sided longitudinal length and the lumbar vertebral. ratio are reliable criteria showing good correlation with the results of sonography.Öğe Sinonasal ossifying fibroma with fluid-fluid levels on MR images(Amer Soc Neuroradiology, 2003) Kendi, A.T.K.; Kara, S.; Altinok, D.; Keskil, S.Ossifying fibroma is a rare benign neoplasm that usually affects mandibular and maxillary bones. In this report, we present a case of sinonasal ossifying fibroma with fluid-fluid levels and posterior extension toward the torus tubarius on MR images.Öğe Smoking prevents the expected postprandial increase in intestinal blood flow - A Doppler sonographic study(Amer Inst Ultrasound Medicine, 2004) Ünal, B.; Bilgili, M.Y.K.; Yilmaz, S.; Caglayan, O.; Kara, S.Objective. To assess whether cigarette smoking had an effect on superior mesenteric artery postprandial blood flow. Methods. Forty-six subjects were studied in 3 groups with Doppler sonography. Group A consisted of nonsmokers; groups B and C consisted of smokers. In group B, subjects were allowed to smoke cigarettes postprandially, whereas in group C, postprandial smoking was prohibited. A baseline Doppler evaluation was performed in the fasting state, and consecutive Doppler evaluations were performed postprandially with 30-min intervals for 120 minutes. Doppler sonographic measurements of the superior mesenteric artery including peak systolic and end-diastolic velocities, resistive index, and diameter, were calculated. Statistical analysis was performed by analysis of variance. Results. All groups showed significant changes with time for all parameters (P < .001 for all). The changes in time were significantly different at 90 and 120 minutes for peak systolic velocity, at 90 minutes for end-diastolic velocity, and at 120 minutes for diameter between groups. Group B had the greatest differences. Compared with group A, changes in peak systolic velocity at 90 to 120 minutes were significantly lower in group B (P = .007 and .006, respectively), and compared with groups A and C, changes in end-diastolic velocity at 90 minutes (P = .006 and .004, respectively) and diameter at 120 minutes (P = .007 and .011, respectively) were significantly lower in group B. Conclusions. Smoking immediately after meals was associated with a superior mesenteric artery blood flow increase that was lower than expected, which may explain the belief that smoking reduces body weight. Postprandial smoking may have undesired results in patients with chronic intestinal ischemia.
