Isotropic Voxel Size Calculator
Equivalent isotropic voxel SIDE from actualvolumecuberootmm, no claim anisotropic data is isotropic/native resolution.
Description
An equivalent isotropic side length is the cube root of a voxel volume.
An equivalent isotropic side length is the cube root of a voxel volume.1
This tool calculates that geometric equivalent without making anisotropic acquired data isotropic.
When to use Isotropic Voxel Size Calculator
This tool calculates that geometric equivalent without making anisotropic acquired data isotropic.
How to use Isotropic Voxel Size Calculator and how it works
- Prepare voxel volume cubic millimeters, using the input definitions and matching units below.
- Enter the required fields and run Isotropic Voxel Size Calculator.
- Read result.value using the units, signs and ordering explained below.
- Correct any rejected inputs and rerun; interpret the result within the stated model and its assumptions.
| Input field | Meaning | Value type | Requirement |
|---|---|---|---|
| actualVoxelVolumeCubicMillimeters | Actual Voxel Volume Cubic Millimeters. Use the units and matching context stated in the calculation below. | number | Required; nonnegative; finite; other constraints below |
Require nonnegative voxel volume in mm^3. Return its cube root as an equivalent isotropic side in mm, including zero for zero volume. This arithmetic does not resample data or assert native isotropic resolution.
equivalentSideMm=cbrt(voxelVolumeMm3) Apply the input ordering, units and branch conditions stated above.
| Output field | Meaning | Value type |
|---|---|---|
| result | Object containing the calculated or selected fields below. | object |
| result.value | Geometric side or pixel length in millimeters. | number |
{
"input": {
"actualVoxelVolumeCubicMillimeters": 8
},
"output": {
"result": {
"value": 2
}
}
}Limitations and assumptions
The calculation uses the supplied observations and model inputs. It does not collect measurements, select a reference population or coefficient, or establish that the model applies to the actual case. The stated branch conditions and output units remain part of the result.
All fields require explicit values. Unexpected fields, wrong types, nonfinite numbers and sparse arrays are rejected. Alignment, bounds and supported-token rules are explained above; extremely large inputs or nonfinite results can also fail. Input errors differ from successful false comparisons, unavailable-domain flags and empty match lists.
Alternative or Complementary methods
Use Voxel Volume Calculator for a complementary operation: Rectangular voxel volume combines readout size, phase size and actual slice thickness.
Use Readout Pixel Size Calculator for a complementary operation: Acquired readout pixel size is encoded field of view divided by the acquired readout matrix count.
References
-
Isotropic Voxel Size Calculator — tool.io
Similar or alternative tools
- Voxel Volume Calculator
Rectangular voxel volume combines readout size, phase size and actual slice thickness.
- Readout Pixel Size Calculator
Acquired readout pixel size is encoded field of view divided by the acquired readout matrix count.