Dynamic contrast-enhanced 3D images of the kidneys, or 3D MR renography, has the potential for broad clinical applications, but suffers from respiratory motion that limits analysis and interpretation. Manual registration is prohibitively labor-intensive. In this paper, a fully automated technique, Wavelet Representation and the Fourier Transform (WRFT) method, that corrects for translation and ...

BACKGROUND The diagnostic value of non-invasive methods for diagnosing renal artery stenosis in patients with renal insufficiency is incompletely known. METHODS Forty-seven consecutive patients with moderately impaired renal function and a clinical suspicion of renal artery stenosis were investigated with computed tomography angiography (CTA), gadolinium-enhanced magnetic resonance angiograph...

UNLABELLED The significance of delayed tissue tracer transit (TTT) of (99m)Tc-mercaptoacetyltriglycine ((99m)Tc-MAG3) has not been systematically evaluated in hydronephrosis. We sought to demonstrate that delayed TTT accompanies both functional decline and histomorphologic restructuring. METHODS Twenty 2- to 3-mo-old piglets with surgically induced partial unilateral ureteral stenosis were ex...

Renal scintigraphy (SCINT) has proved to be a useful imaging modality for many renal diseases, congenital or acquired, and for the evaluation of complications of renal transplant. However, the modality has limited resolution for small morphologic changes (such as tumors) of the parenchyma and the collecting system, shows neither stones nor calcifications, and usually misses other abdominal path...

Introduction/Objective. Nuclear Medicine Section of IAEA has developed the software for dynamic renal scintigraphy, which allows calculation advanced parameters drainage: output efficiency (OE) and normalized residual activity (NORA). The aim this study was to validate by comparing results drainage in normal subjects against their established reference values assess diagnostic accuracy OE NORA ...

OBJECTIVE The present study examines whether or not baseline and acetazolamide (ACZ) Tc-99m MAG3 renography can assess renal blood flow reserve. METHODS Renography proceeded for 50 min after sequential injections of 370 MBq Tc-99m MAG3 for baseline renography and 10 min after a 1,000 mg injection of ACZ for ACZ renography. Effective renal plasma flow of renal cortex (cERPF) in each kidney and...

Renal imaging with radioisotopes, or renal scintigraphy, allows the quantitative evaluation of renal function and urodynamics. Measurement of renal function provides essential information in various situations of clinical practice. Angiotensin-converting enzyme inhibitor renography makes it possible to detect patients with renovascular hypertension. Diuresis renography aids in differentiating u...