Renal Split Function Calculator

Select the calculation mode (Standard ROI or Geometric Mean) and enter the required counts to calculate the relative kidney function.

Select Mode: Standard ROI Method Geometric Mean Method

Standard ROI Method

Kidney	ROI Counts	Background Counts	Background ROI Area	Kidney ROI Area
Left
Right

Geometric Mean Method

Anterior Image Inputs

Kidney	ROI Counts	Background Counts	Background ROI Area	Kidney ROI Area
Left
Right

Posterior Image Inputs

Kidney	ROI Counts	Background Counts	Background ROI Area	Kidney ROI Area
Left
Right

Results

Parameter	Value
Left Kidney Function (%)
Right Kidney Function (%)

Note: This calculator estimates split renal function using two methods:

• Standard ROI: Background-corrected counts from kidney ROIs relative to injected dose counts.
• Geometric Mean: Uses anterior and posterior counts (background corrected) and calculates √(Anterior × Posterior) to reduce depth attenuation bias.

Made by Poovendhan.