Abdomen Worksheet & Calculated Fields

Calculated Fields

In the Abdomen worksheet, the following fields are calculated automatically. These calculated values automatically update when any of the source values are changed.

Field	Source Values	Calculation Logic
Resistivity Index	Hepatic Artery PSV, Hepatic Artery EDV	(PSV - EDV) ÷ PSV
R/A Ratio	RA PSV, Aorta PSV	Renal Artery PSV ÷ Aorta PSV

Criteria

The criteria listed below are set by default for the Abdomen worksheet. However, you can choose to use a different set of criteria, or you can define custom criteria.  

To change the criteria in your worksheets, visit the My Choice's Form article to learn how. 

Significant PVR Conclusion Threshold

The default "normal" threshold is 100 cc. Values greater than or equal to 100 cc will generate a "significant post void residual" Conclusions statement.

Abdomenal Doppler Criteria

Liver: Portal Vein PV

Decreased: < 16 cm/s

Normal: 16 - 40 cm/s

Increased:  > 40 cm/s

Liver: Hepatic Artery RI

Decreased:  < 0.55

Normal: 0.55 - 0.7

Elevated:  > 0.7

Kidneys: R/A Ratio

Normal:  < 3.5 cm/s

Kidneys: Renal Artery PSV

Normal:  < 180 cm/s

Increased:  >= 180 cm/s

Aorta: Abdominal Aorta PSV

Normal: 0 - 150 cm/s

Mildly Increased:  151 - 200 cm/s

Moderately Increased:  201 - 300 cm/s

Severely Increased:  > 300 cm/s