The Experts below are selected from a list of 156 Experts worldwide ranked by ideXlab platform
Tatsuo Kumazaki - One of the best experts on this subject based on the ideXlab platform.
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effect of iodixanol on renal function immediately after Abdominal Angiography clinical comparison with iomeprol and ioxaglate
Acta Radiologica, 1998Co-Authors: R Murakami, Hiroyuki Tajima, Tatsuo Kumazaki, K YamamotoAbstract:Purpose: To investigate the acute renal effects of three contrast media in a double-blind randomized parallel-group study. The contrast media investigated were: the nonionic dimeric iso-osmolality medium iodixanol; the nonionic monomeric medium iomeprol; and the ionic dimeric medium ioxaglate. Material and Methods: A total of 30 patients were given the following doses of contrast medium: 10 patients received iodixanol 320 mg I/ml; 10 received iomeprol 300 mg I/d; and 10 received ioxaglate 320 mg Vml. The doses were given intra-arterially at routine Abdominal Angiography and the renal effects of these three contrast media were studied for up to 120 min after injection. Results: The urinary minute volume increased immediately after Angiography but tended to return to baseline values after 120 min; these changes were more pronounced with iomeprol and ioxaglate than with iodixanol. Creatinine clear- ance was not reduced by any of the contrast media. Fraction excretion of so- dium increased immediately and lasted for 30 min after Angiography; these changes were more pronounced with ioxaglate than with iomeprol and iodixa- nol. Urinary y-glutamyl transferase increased for 120 min after Angiography with iodixanol and iomeprol; these changes were more pronounced with iome- pro1 than with iodixanol. On the other hand, urinary N-acetyl-P-ghcosamhida- se increased for 120 min after Angiography with iomeprol, but was unchanged with iodixanol. Conclusion: The use of contrast media induces osmotic diuresis and its acute effects on the proximal tubular function. However, the iso-osmolality medium iodixanol induces fewer changes than the other two media.
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Effect of Iomeprol on Renal Function Immediately after Abdominal Angiography
Acta radiologica (Stockholm Sweden : 1987), 1996Co-Authors: R Murakami, Hiroyuki Tajima, Tatsuo KumazakiAbstract:Purpose: To investigate the acute renal effects of three contrast media in a double-blind randomized parallel-group study. The contrast media investigated were: the nonionic dimeric iso-osmolality medium iodixanol; the nonionic monomeric medium iomeprol; and the ionic dimeric medium ioxaglate.Material and Methods: A total of 30 patients were given the following doses of contrast medium: 10 patients received iodixanol 320 mg I/ml; 10 received iomeprol 300 mg I/ml; and 10 received ioxaglate 320 mg I/ml. The doses were given intra-arterially at routine Abdominal Angiography and the renal effects of these three contrast media were studied for up to 120 min after injection.Results: The urinary minute volume increased immediately after Angiography but tended to return to baseline values after 120 min; these changes were more pronounced with iomeprol and ioxaglate than with iodixanol. Creatinine clearance was not reduced by any of the contrast media. Fraction excretion of sodium increased immediately and lasted ...
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Effect of Iomeprol on Renal Function Immediately after Abdominal Angiography
Acta Radiologica, 1996Co-Authors: R Murakami, Hiroyuki Tajima, Tatsuo KumazakiAbstract:Purpose: To investigate the acute renal effects of 2 osmolality levels of iomeprol in a double-blind, randomized, parallel-group study. Material and Methods: Ten patients received iomeprol 300 mg I/ml, and a further 10 received iomeprol 400 mg I/ml intraarterially at routine Abdominal Angiography. The mean volume of contrast medium administered was 227.3±59.3 ml in the iomeprol 300 group and 221.5±30.9 ml in the iomeprol 400 group. Results: The urinary minute volume increased immediately after Angiography, but tended to return to baseline 120 min after the examination. No significant decrease in creatinine clearance occurred; however, the fraction excretion of sodium increased immediately after Angiography. The lysosomal enzyme N-acetyl-β-glucosaminidase and the proximal tubular brush border enzyme γ-glutamyl transferase increased up to 120 min after the procedure. Free water clearance was negative during each study period. No statistical differences in any parameter were evident between these 2 groups. Conclusion: These results suggest that osmotic diuresis and its acute effect on proximal tubular function are induced by the administration of iomeprol, but that these changes are reversible.
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Hepato-biliary excretion of water-soluble iodinated contrast medium shortly after Abdominal Angiography
Nihon Igaku Hoshasen Gakkai zasshi. Nippon acta radiologica, 1995Co-Authors: T. Kaizu, Hiroyuki Tajima, Taro Ichikawa, Tatsuo KumazakiAbstract:Thirty-nine patients underwent CT examination 15 to 30 min after Abdominal Angiography with ioxaglate. Gallbladder opacification was observed in 15 patients in the absence of clinical evidence of renal impairment. Among them, 14 patients revealed liver cirrhosis or chronic hepatitis, and one patient showed severe fatty liver on CT. The amount of contrast medium used varied from 70 ml to 310 ml (mean 180 ml). There was no significant relationship between visualization of the gallbladder and the total dose of ioxaglate or presence of liver dysfunction, which indicated that gallbladder opacification was not a rare phenomenon on CT shortly after Abdominal Angiography with a normal dose of ioxaglate. Gallbladder opacification on CT examination shortly after Abdominal Angiography shows that the hepatobiliary tract is important in the excretion of ioxaglate.
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Gallbladder visualization on CT shortly after Angiography with ioxaglate.
Acta radiologica (Stockholm Sweden : 1987), 1994Co-Authors: Hiroyuki Tajima, T. Kaizu, Taro Ichikawa, Tatsuo KumazakiAbstract:Thirty-five patients underwent CT examination 15 to 30 min after Abdominal Angiography with ioxaglate. The gallbladder was visualized in 12 patients in the absence of clinical evidence of renal impairment. Gallbladder opacification on CT examinations shortly after Angiography shows that the hepatobiliary tract is important in the excretion of ioxaglate.
Minh Huynh - One of the best experts on this subject based on the ideXlab platform.
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Efficacy of ‘fine’ focal spot imaging in CT Abdominal Angiography
European Radiology, 2014Co-Authors: Kenneth K. Lau, Ashwini Devapalasundaram, Kevin Buchan, Nicholas Ardley, Minh HuynhAbstract:Objectives To assess the efficacy of fine focal spot imaging in calcification beam-hardening artefact reduction and vessel clarity on CT Abdominal Angiography (CTAA). Methods Adult patients of any age and gender who presented for CTAA were included. Thirty-nine patients were examined with a standard focal spot size (SFSS) of 1 × 1 mm in the first 3 months while 31 consecutive patients were examined with a fine focal spot size (FFSS) of 1 × 0.5 mm in the following 3 months. Vessel clarity and calcification beam-hardening artefacts of the Abdominal aorta, celiac axis, superior mesenteric artery, inferior mesenteric artery, renal arteries, and iliac arteries were assessed using a 5-point grading scale by two blinded radiologists randomly. Results Cohen’s Kappa test indicated that on average, there was substantial agreement among reviewers for vessel wall clarity and calcification artefact grading. Mann-Whitney test showed that there was a significant difference between the two groups, with FFSS performing significantly better for vessel clarity ( U, 6481.50; p
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Efficacy of 'fine' focal spot imaging in CT Abdominal Angiography.
European radiology, 2014Co-Authors: Kenneth K. Lau, Ashwini Devapalasundaram, Kevin Buchan, Nicholas Ardley, Minh HuynhAbstract:Objectives To assess the efficacy of fine focal spot imaging in calcification beam-hardening artefact reduction and vessel clarity on CT Abdominal Angiography (CTAA).
Kenneth K. Lau - One of the best experts on this subject based on the ideXlab platform.
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Efficacy of ‘fine’ focal spot imaging in CT Abdominal Angiography
European Radiology, 2014Co-Authors: Kenneth K. Lau, Ashwini Devapalasundaram, Kevin Buchan, Nicholas Ardley, Minh HuynhAbstract:Objectives To assess the efficacy of fine focal spot imaging in calcification beam-hardening artefact reduction and vessel clarity on CT Abdominal Angiography (CTAA). Methods Adult patients of any age and gender who presented for CTAA were included. Thirty-nine patients were examined with a standard focal spot size (SFSS) of 1 × 1 mm in the first 3 months while 31 consecutive patients were examined with a fine focal spot size (FFSS) of 1 × 0.5 mm in the following 3 months. Vessel clarity and calcification beam-hardening artefacts of the Abdominal aorta, celiac axis, superior mesenteric artery, inferior mesenteric artery, renal arteries, and iliac arteries were assessed using a 5-point grading scale by two blinded radiologists randomly. Results Cohen’s Kappa test indicated that on average, there was substantial agreement among reviewers for vessel wall clarity and calcification artefact grading. Mann-Whitney test showed that there was a significant difference between the two groups, with FFSS performing significantly better for vessel clarity ( U, 6481.50; p
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Efficacy of 'fine' focal spot imaging in CT Abdominal Angiography.
European radiology, 2014Co-Authors: Kenneth K. Lau, Ashwini Devapalasundaram, Kevin Buchan, Nicholas Ardley, Minh HuynhAbstract:Objectives To assess the efficacy of fine focal spot imaging in calcification beam-hardening artefact reduction and vessel clarity on CT Abdominal Angiography (CTAA).
Hiroyuki Tajima - One of the best experts on this subject based on the ideXlab platform.
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Plasma endothelin, nitric oxide and atrial natriuretic peptide levels in humans after Abdominal Angiography.
Acta radiologica (Stockholm Sweden : 1987), 2002Co-Authors: R Murakami, Hiroyuki Tajima, M. Machida, Hiromitsu Hayashi, N. Uchiyama, T. KumazakiAbstract:Purpose: To clarify the effect of the contrast medium iopamidol on endothelial function and response of vasoactive peptide, as measured by changes in the levels of plasma endothelin, nitric oxide and atrial natriuretic peptide. Material and Methods: Thirteen patients received iopamidol 300 mg I/ml intra-arterially during routine Abdominal Angiography. The mean volume of contrast medium administered was 208.1±32.5 ml. Endothelin, nitric oxide and atrial natriuretic peptide were measured before and after Angiography. Results: Endothelin levels increased significantly (from 1.45±0.12 pg/ml to 1.90±0.10 pg/ml) after exposure to contrast medium. Nitric oxide levels decreased significantly (from 34.56±2.23 μmol/ to 25.43±1.83 μmol/l). Atrial natriuretic peptide levels increased significantly (from 11.43±1.68 pg/ml to 21.28±2.89 pg/ml). Conclusion: Exposure to contrast medium in humans is associated with an increase in plasma endothelin levels and a decrease in nitric oxide levels, and atrial natriuretic peptide levels also increase following CM injection.
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effect of iodixanol on renal function immediately after Abdominal Angiography clinical comparison with iomeprol and ioxaglate
Acta Radiologica, 1998Co-Authors: R Murakami, Hiroyuki Tajima, Tatsuo Kumazaki, K YamamotoAbstract:Purpose: To investigate the acute renal effects of three contrast media in a double-blind randomized parallel-group study. The contrast media investigated were: the nonionic dimeric iso-osmolality medium iodixanol; the nonionic monomeric medium iomeprol; and the ionic dimeric medium ioxaglate. Material and Methods: A total of 30 patients were given the following doses of contrast medium: 10 patients received iodixanol 320 mg I/ml; 10 received iomeprol 300 mg I/d; and 10 received ioxaglate 320 mg Vml. The doses were given intra-arterially at routine Abdominal Angiography and the renal effects of these three contrast media were studied for up to 120 min after injection. Results: The urinary minute volume increased immediately after Angiography but tended to return to baseline values after 120 min; these changes were more pronounced with iomeprol and ioxaglate than with iodixanol. Creatinine clear- ance was not reduced by any of the contrast media. Fraction excretion of so- dium increased immediately and lasted for 30 min after Angiography; these changes were more pronounced with ioxaglate than with iomeprol and iodixa- nol. Urinary y-glutamyl transferase increased for 120 min after Angiography with iodixanol and iomeprol; these changes were more pronounced with iome- pro1 than with iodixanol. On the other hand, urinary N-acetyl-P-ghcosamhida- se increased for 120 min after Angiography with iomeprol, but was unchanged with iodixanol. Conclusion: The use of contrast media induces osmotic diuresis and its acute effects on the proximal tubular function. However, the iso-osmolality medium iodixanol induces fewer changes than the other two media.
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Effect of Iomeprol on Renal Function Immediately after Abdominal Angiography
Acta radiologica (Stockholm Sweden : 1987), 1996Co-Authors: R Murakami, Hiroyuki Tajima, Tatsuo KumazakiAbstract:Purpose: To investigate the acute renal effects of three contrast media in a double-blind randomized parallel-group study. The contrast media investigated were: the nonionic dimeric iso-osmolality medium iodixanol; the nonionic monomeric medium iomeprol; and the ionic dimeric medium ioxaglate.Material and Methods: A total of 30 patients were given the following doses of contrast medium: 10 patients received iodixanol 320 mg I/ml; 10 received iomeprol 300 mg I/ml; and 10 received ioxaglate 320 mg I/ml. The doses were given intra-arterially at routine Abdominal Angiography and the renal effects of these three contrast media were studied for up to 120 min after injection.Results: The urinary minute volume increased immediately after Angiography but tended to return to baseline values after 120 min; these changes were more pronounced with iomeprol and ioxaglate than with iodixanol. Creatinine clearance was not reduced by any of the contrast media. Fraction excretion of sodium increased immediately and lasted ...
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Effect of Iomeprol on Renal Function Immediately after Abdominal Angiography
Acta Radiologica, 1996Co-Authors: R Murakami, Hiroyuki Tajima, Tatsuo KumazakiAbstract:Purpose: To investigate the acute renal effects of 2 osmolality levels of iomeprol in a double-blind, randomized, parallel-group study. Material and Methods: Ten patients received iomeprol 300 mg I/ml, and a further 10 received iomeprol 400 mg I/ml intraarterially at routine Abdominal Angiography. The mean volume of contrast medium administered was 227.3±59.3 ml in the iomeprol 300 group and 221.5±30.9 ml in the iomeprol 400 group. Results: The urinary minute volume increased immediately after Angiography, but tended to return to baseline 120 min after the examination. No significant decrease in creatinine clearance occurred; however, the fraction excretion of sodium increased immediately after Angiography. The lysosomal enzyme N-acetyl-β-glucosaminidase and the proximal tubular brush border enzyme γ-glutamyl transferase increased up to 120 min after the procedure. Free water clearance was negative during each study period. No statistical differences in any parameter were evident between these 2 groups. Conclusion: These results suggest that osmotic diuresis and its acute effect on proximal tubular function are induced by the administration of iomeprol, but that these changes are reversible.
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Hepato-biliary excretion of water-soluble iodinated contrast medium shortly after Abdominal Angiography
Nihon Igaku Hoshasen Gakkai zasshi. Nippon acta radiologica, 1995Co-Authors: T. Kaizu, Hiroyuki Tajima, Taro Ichikawa, Tatsuo KumazakiAbstract:Thirty-nine patients underwent CT examination 15 to 30 min after Abdominal Angiography with ioxaglate. Gallbladder opacification was observed in 15 patients in the absence of clinical evidence of renal impairment. Among them, 14 patients revealed liver cirrhosis or chronic hepatitis, and one patient showed severe fatty liver on CT. The amount of contrast medium used varied from 70 ml to 310 ml (mean 180 ml). There was no significant relationship between visualization of the gallbladder and the total dose of ioxaglate or presence of liver dysfunction, which indicated that gallbladder opacification was not a rare phenomenon on CT shortly after Abdominal Angiography with a normal dose of ioxaglate. Gallbladder opacification on CT examination shortly after Abdominal Angiography shows that the hepatobiliary tract is important in the excretion of ioxaglate.
K. Rootwelt - One of the best experts on this subject based on the ideXlab platform.
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Angiography with nonionic X-ray contrast media in severe chronic renal failure: renal function and contrast retention.
Nephron, 1996Co-Authors: Jarl Å. Jakobsen, F Kolmannskog, K. J. Berg, P. Kjærsgaard, K.p. Nordal, K. RootweltAbstract:The effects of contrast media on renal function and the cortical retention of contrast media after Abdominal Angiography were investigated. Sixteen non-diabetic patients with predialytic chronic renal
