Description
Validate foldArea, tearArea, and their sharedExcludedArea within positive totalArea.
Histology counting uses eligible objects, sampled areas, exclusions, and reference planes. The chosen denominator and boundary rules affect the result, while actual object identification and sampling validity require separate review.
Validate foldArea, tearArea, and their sharedExcludedArea within positive totalArea.
When to use this tool
Use Section Fold Excluded Area Share when you need one supplied counting or support component under an explicit protocol.
How to use the tool and how it works
- Enter totalArea, foldArea, tearArea, sharedExcludedArea. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read excludedUnion, usableArea, usableFraction. Use the output convention below.
Validate foldArea, tearArea, and their sharedExcludedArea within positive totalArea. Subtract the exclusion union and return usableArea and its fraction.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| totalArea | Total Area | Required. Finite number; strictly above 0. |
| foldArea | Fold Area | Required. Finite number; minimum 0. |
| tearArea | Tear Area | Required. Finite number; minimum 0. |
| sharedExcludedArea | Shared Excluded Area | Required. Finite number; minimum 0. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| excludedUnion | Excluded Union | Required. Finite number. |
| usableArea | Usable Area | Required. Finite number. |
| usableFraction | Usable Fraction | Required. Finite number. |
{
"input": {
"totalArea": 100,
"foldArea": 10,
"tearArea": 8,
"sharedExcludedArea": 3
},
"output": {
"excludedUnion": 15,
"usableArea": 85,
"usableFraction": 0.85
}
}Limitations and assumptions
- Overlap and area classifications are supplied; usable area is not necessarily representative or adequate for diagnosis.
- 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.
- Numeric calculations use binary floating point unless exact decimal-integer arithmetic is explicitly stated. No hidden measurement tolerance or decimal rounding is added; nonfinite or out-of-contract results are rejected. Numeric signed-zero results are exported as zero.
Alternative or Complementary methods
Check the full stereological or image-analysis method and appropriate professional interpretation before drawing a tissue conclusion.
References
Similar or alternative tools
- Tissue Core Unobserved Area Token
Subtract their union and return the remaining fraction of coreArea.
- Region Area Pixel Scale
Subtract excludedPixels within nonnegative integer pixelCount and multiply by positive xLengthPerPixel times yLengthPerPixel.