Skip to content

Main content

Anatomical Plane Normal Axis

Return the undirected standard anatomical normal axis for one named sagittal, coronal, or transverse plane.

Loading tool…

Description

Map a supplied standard anatomical plane to its normal-axis name.

Anatomical measurements depend on coordinate frame, plane, axis sign, terminology source and scale. Reordering length/width/depth does not identify anatomical axes, and a landmark separation requires corresponding calibrated points. Source-qualified names preserve wording without verifying a structure or clinical interpretation.

Map a supplied standard anatomical plane to its normal-axis name.

When to use this tool

Use Anatomical Plane Normal Axis when you already have plane and need to map a supplied standard anatomical plane to its normal-axis name.

How to use the tool and how it works

  1. Enter plane. Use the units and conventions below.
  2. Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
  3. Read normalAxis. Use the output convention below.

Accept sagittal, coronal or transverse; map respectively to left-right, anterior-posterior or superior-inferior.1

Input fieldMeaning and unitsAccepted input
planePlaneRequired. Text; one of "sagittal", "coronal", "transverse"; maximum UTF-16 length 8192.
Output fieldInterpretationReturned shape
normalAxisConventional anatomical axis perpendicular to the selected plane; no positive direction is chosen.Required. Text; maximum UTF-16 length 8192.
json
{
  "input": {
    "plane": "sagittal"
  },
  "output": {
    "normalAxis": "left-right"
  }
}

Limitations and assumptions

  • The mapping states conventional anatomical orientation without choosing a positive direction, locating a plane or validating image coordinates or patient position.
  • Inputs must satisfy both the field types and the cross-field conditions above. Invalid input causes an error; a successful false flag or documented placeholder is a different result.

Alternative or Complementary methods

Inspect the original specimen, image, coordinate definitions and terminology source. Use the complete anatomical or clinical assessment when local distances, labels or axis mappings cannot answer the question.

References

  1. Calculation and input contract: anatomy/anatomical-plane-normal-axis — tool.io

Similar or alternative tools