Peak Voxel Intensity Calculator
Peak actual independently mask qualified voxel intensity, no smoothing/segmentation, voxel coordinate or inferential peak-pvalue. Actual independently matched observations/units and protocol, not diagnosis, causal mechanism, clinical decision or validated individual prediction.
Description
A peak voxel intensity is the largest value within an independently qualified voxel set.
A peak voxel intensity is the largest value within an independently qualified voxel set.1
This tool finds that maximum without selecting a mask, reporting its coordinate or assigning inferential significance.
When to use Peak Voxel Intensity Calculator
This tool finds that maximum without selecting a mask, reporting its coordinate or assigning inferential significance.
How to use Peak Voxel Intensity Calculator and how it works
- Prepare qualified voxel intensities, using the input definitions and matching units below.
- Enter the required fields and run Peak Voxel Intensity 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 |
|---|---|---|---|
| actualQualifiedVoxelIntensities | Actual Qualified Voxel Intensities. Use the units and matching context stated in the calculation below. | array of number | Required; other constraints below |
Require a nonempty list of finite independently qualified voxel intensities. Return their maximum; signed intensities are accepted. No mask, smoothing, spatial coordinates or p-value is produced.
peakIntensity=max(qualifiedIntensities) 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 | Maximum supplied voxel intensity in its original intensity unit. | number |
{
"input": {
"actualQualifiedVoxelIntensities": [
1,
5,
3
]
},
"output": {
"result": {
"value": 5
}
}
}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 T2 Lesion Load Calculator for a complementary operation: T2 lesion load can be represented by the total physical volume of independently qualified disjoint lesion labels.
Use Black Hole Count Tool for a complementary operation: In this MRI context, a black-hole count concerns independently qualified T1-hypointense lesion candidates.
References
-
Peak Voxel Intensity Calculator — tool.io
Similar or alternative tools
- T2 Lesion Load Calculator
T2 lesion load can be represented by the total physical volume of independently qualified disjoint lesion labels.
- Black Hole Count Tool
In this MRI context, a black-hole count concerns independently qualified T1-hypointense lesion candidates.