Description
Account for sampled pixels in supplied disjoint research masks; no lesion detection, staging or prognosis.
Research lesion records distinguish measured dimensions, geometric size models, censoring conventions, assessment denominators, and follow-up timing. An axis product, percent change, or coverage measure describes only its stated inputs and model. Such arithmetic does not automatically implement a clinical response criterion or validate a study.
Account for sampled pixels in supplied disjoint research masks; no lesion detection, staging or prognosis.
When to use this tool
Use Lesion Mask Sampling Share when you need this research measurement, assessment-base, source, or event-time calculation.
How to use the tool and how it works
- Enter maskPixels, sampledPixels. Keep parallel arrays aligned. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read maskTotalDecimal, sampledTotalDecimal, share, defined. Inspect defined before interpreting the associated values.
Require aligned nonnegative integer maskPixels and sampledPixels with sampled<=mask in every row. Sum using exact integers into maskTotalDecimal and sampledTotalDecimal; return share=Number(sampledTotal)/Number(maskTotal) when positive, otherwise zero with defined=false.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| maskPixels | Mask Pixels | Required. Array of safe integer; maximum items 256. |
| sampledPixels | Sampled Pixels | Required. Array of safe integer; maximum items 256. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| maskTotalDecimal | Exact integer sum exported as decimal text. | Required. Text; maximum UTF-16 length 8192. |
| sampledTotalDecimal | Sampled Total Decimal | Required. Text; maximum UTF-16 length 8192. |
| share | Floating-point ratio of the exact totals; not an image-derived coverage result. | Required. Finite number. |
| defined | Whether the stated denominator or quantity is defined; inspect before using a placeholder. | Required. Boolean. |
{
"input": {
"maskPixels": [
10,
20
],
"sampledPixels": [
5,
10
]
},
"output": {
"maskTotalDecimal": "30",
"sampledTotalDecimal": "15",
"share": 0.5,
"defined": true
}
}Limitations and assumptions
- Totals are exact decimal strings while the ratio uses floating-point conversions. Counts and row alignment are supplied, and no image mask, sampling geometry, tumor classification, or diagnostic coverage is verified.
- 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
Use the intended study protocol and a complete measurement or analysis model for a broader conclusion. Verify lesion definitions, censoring, measurement correspondence, time anchors, and missing-assessment policy.
References
Similar or alternative tools
- Retinal Mask Support Share
Account for explicit research mask areas and support flags without retinal image interpretation.
- Followup Source Support Share
Audit explicit research follow-up source support without imputing clinical endpoints.