Split renal function in patients with suspected renal artery stenosis: a comparison between gamma camera renography and two methods of measurement with computed tomography
| Autor: | L-G. Andersson, Rickard Nyman, Henrik Björkman, Anders Magnusson, Hampus Eklöf, Jonas Wadström |
|---|---|
| Rok vydání: | 2006 |
| Předmět: |
Adult
Male medicine.medical_specialty Arterial disease Iohexol Renal function Contrast Media Computed tomography Renal artery stenosis Kidney Kidney Function Tests Renal Artery Obstruction law.invention Imaging Three-Dimensional law medicine Humans Radiology Nuclear Medicine and imaging In patient Prospective Studies Gamma camera Aged Aged 80 and over Radiological and Ultrasound Technology medicine.diagnostic_test business.industry General Medicine Middle Aged medicine.disease Female Tomography Radiology business Tomography X-Ray Computed Radioisotope Renography Kidney disease |
| Zdroj: | Acta radiologica (Stockholm, Sweden : 1987). 47(1) |
| ISSN: | 0284-1851 |
| Popis: | Purpose: To validate a method for calculating split renal function from computed tomography (CT) compared with gamma camera renography, and to test a new method for the measurement based on a volume-rendering technique. Material and Methods: Thirty-eight patients, aged 65.7±11.6 (range 37.8–82.1) years, who had undergone both CT angiography and gamma camera renography for a suspected renal artery stenosis were included in this study. Split renal function was calculated from the CT examinations by measuring area and mean attenuation in the image slices of the kidneys, and also by measuring volume and mean attenuation from a 3D reconstruction of the kidneys. Gamma camera renography with 99mTc-MAG3 with or without captopril enhancement was used as a reference. Results: The 2D CT method had good correlation with renography ( r = 0.93). Mean difference was 4.7±3.6 (0–12) percentage points per kidney. There was also excellent correlation between the two CT methods ( r = 1.00). Conclusion: CT is equivalent to renography in determining split renal function, and the measurement from the CT examination can be made more quickly and equally accurately with a 3D technique. |
| Databáze: | OpenAIRE |
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