Differential Renal Function Estimation Using Computerized Tomography Based Renal Parenchymal Volume Measurement

2010 ◽  
Vol 183 (6) ◽  
pp. 2289-2293 ◽  
Author(s):  
Shelby N. Morrisroe ◽  
Ruthie R. Su ◽  
Kyongtae T. Bae ◽  
Brian H. Eisner ◽  
Cheng Hong ◽  
...  
Keyword(s):  
Renal Function ◽  
Computerized Tomography ◽  
Volume Measurement ◽  
Function Estimation ◽  
Differential Renal Function ◽  
Renal Parenchymal Volume

1786: Prediction of Differential Renal Function as Determined by Contrasted and non-contrasted Computerized Tomography

2007 ◽  
Vol 177 (4S) ◽  
pp. 593-594
Author(s):  
Shelby N. Morrisroe ◽  
Erin P. Gibbons ◽  
Benjamin R. Stockton ◽  
Kyongtae T. Bae ◽  
Cheng Hong ◽  
...  
Keyword(s):  
Renal Function ◽  
Computerized Tomography ◽  
Differential Renal Function

Three-Dimensional Renal Parenchymal Volume as a Surrogate for Renal Function Estimation in Obstructed Kidneys Undergoing Surgical Repair

2015 ◽  
Vol 29 (6) ◽  
pp. 630-633 ◽  
Author(s):  
Humberto J. Martinez-Suarez ◽  
Timothy Durso ◽  
Adam O. Kadlec ◽  
Gopal N. Gupta ◽  
Ahmer V. Farooq ◽  
...  
Keyword(s):  
Renal Function ◽  
Surgical Repair ◽  
Three Dimensional ◽  
Function Estimation ◽  
Renal Parenchymal Volume

3D Renal Parenchymal Volume as a Surrogate for Renal Function Estimation in Obstructed Kidneys Undergoing Surgical Repair

2014 ◽  
pp. 150127063130004
Author(s):  
Humberto Joseph Martinez-Suarez ◽  
Timothy Durso ◽  
Adam O Kadlec ◽  
Gopal N Gupta ◽  
Ahmer V Farooq ◽  
...  
Keyword(s):  
Renal Function ◽  
Surgical Repair ◽  
Function Estimation ◽  
Renal Parenchymal Volume

Predicting Differential Renal Function Using Computerized Tomography Measurements of Renal Parenchymal Area

2008 ◽  
Vol 180 (5) ◽  
pp. 2110-2115 ◽  
Author(s):  
Marc T. Feder ◽  
Jeffery Blitstein ◽  
Barry Mason ◽  
David M. Hoenig
Keyword(s):  
Renal Function ◽  
Computerized Tomography ◽  
Differential Renal Function

754: Artifactual Elevation of Differential Renal Function Measured by Nuclear Scintigraphy in Large Hydronephrotic Kidneys

2006 ◽  
Vol 175 (4S) ◽  
pp. 245-245
Author(s):  
Joao L. Pippi Salle ◽  
Anthony J. Cook ◽  
Frank Papanicolaou ◽  
Darius J. Bagli ◽  
Farhat Walid ◽  
...  
Keyword(s):  
Renal Function ◽  
Nuclear Scintigraphy ◽  
Differential Renal Function

DMSA-scintigraphy in paediatrics: Is the evaluation of the geometric mean necessary for the calculation of the differential renal function?

2001 ◽  
Vol 40 (04) ◽  
pp. 107-110 ◽  
Author(s):  
B. Roßmüller ◽  
S. Alalp ◽  
S. Fischer ◽  
S. Dresel ◽  
K. Hahn ◽  
...  
Keyword(s):  
Renal Function ◽  
Geometric Mean ◽  
Region Of Interest ◽  
Posterior View ◽  
Renal Abnormality ◽  
Anterior View ◽  
Differential Renal Function ◽  
The Mean ◽  
The Right ◽  
To Receive

SummaryFor assessment of differential renal function (PF) by means of static renal scintigraphy with Tc-99m-dimer-captosuccinic acid (DMSA) the calculation of the geometric mean of counts from the anterior and posterior view is recommended. Aim of this retrospective study was to find out, if the anterior view is necessary to receive an accurate differential renal function by calculating the geometric mean compared to calculating PF using the counts of the posterior view only. Methods: 164 DMSA-scans of 151 children (86 f, 65 m) aged 16 d to 16 a (4.7 ± 3.9 a) were reviewed. The scans were performed using a dual head gamma camera (Picker Prism 2000 XP, low energy ultra high resolution collimator, matrix 256 x 256,300 kcts/view, Zoom: 1.6-2.0). Background corrected values from both kidneys anterior and posterior were obtained. Using region of interest technique PF was calculated using the counts of the dorsal view and compared with the calculated geometric mean [SQR(Ctsdors x Ctsventr]. Results: The differential function of the right kidney was significantly less when compared to the calculation of the geometric mean (p<0.01). The mean difference between the PFgeom and the PFdors was 1.5 ± 1.4%. A difference > 5% (5.0-9.5%) was obtained in only 6/164 scans (3.7%). Three of 6 patients presented with an underestimated PFdors due to dystopic kidneys on the left side in 2 patients and on the right side in one patient. The other 3 patients with a difference >5% did not show any renal abnormality. Conclusion: The calculation of the PF from the posterior view only will give an underestimated value of the right kidney compared to the calculation of the geometric mean. This effect is not relevant for the calculation of the differntial renal function in orthotopic kidneys, so that in these cases the anterior view is not necesssary. However, geometric mean calculation to obtain reliable values for differential renal function should be applied in cases with an obvious anatomical abnormality.

Age-related changes in the proportion of intracranial cerebrospinal fluid space measured using volumetric computerized tomography scanning

2002 ◽  
Vol 97 (3) ◽  
pp. 607-610 ◽  
Author(s):  
Hiroshi Wanifuchi ◽  
Takashi Shimizu ◽  
Takashi Maruyama
Keyword(s):  
Cerebrospinal Fluid ◽  
Computerized Tomography ◽  
Ct Scanning ◽  
Volume Measurement ◽  
Intracranial Volume ◽  
Content Type ◽  
Standard Curve ◽  
Age Related ◽  
Fine Print ◽  
Age Related Changes

Object. The purpose of this study was to establish a standard curve to demonstrate normal age-related changes in the proportion of intracranial cerebrospinal fluid (CSF) space in intracranial volume (ICV) during each decade of life. Methods. Using volumetric computerized tomography (CT) scanning and computer-guided volume measurement software, ICV and cerebral parenchymal volume (CPV) for each decade of life were measured and the intracranial CSF ratio was calculated by the following formula: percentage of CSF = (ICV − CPV)/ICV × 100%. The standard curve for age-related changes in normal percentages of intracranial CSF was obtained. Conclusions. Based on this standard curve, the percentage of intracranial CSF rapidly increased after the sixth decade, seeming to reflect the brain atrophy that accompanies increased age.

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