Thalamic Subcortical Volume Calculator
Actual bilateral thalamus segmentation volume sum and signed side discrepancy; anatomical definitions and segmentation external, not age-normalized abnormality.
Description
Bilateral thalamic volume combines independently segmented left and right measurements.
Bilateral thalamic volume combines independently segmented left and right measurements.1
Total volume and right-minus-left asymmetry answer different descriptive questions.
When to use Thalamic Subcortical Volume Calculator
Use this tool to calculate or review the supplied observations under the stated rules. Establish the assessment or recording protocol, units, instrument version and independently applicable reference or calibration.
How to use Thalamic Subcortical Volume Calculator and understand its results
- Establish the assessment or recording protocol, units, instrument version and independently applicable reference or calibration.
- Enter independentlySegmentedLeftThalamusMl, independentlySegmentedRightThalamusMl, using the field meanings and rules below, then run the tool.
- Read result.observedBilateralThalamicVolumeMl, result.signedRightMinusLeftThalamicVolumeMl. Use the units and sign conventions below.
- Correct any reported input issue and run again. Before using a successful result, check the stated units, signs, reference scope and observation coverage.
| Input field | Meaning | Value type | Requirement |
|---|---|---|---|
| independentlySegmentedLeftThalamusMl | Independently segmented left thalamus ml | number | Required |
| independentlySegmentedRightThalamusMl | Independently segmented right thalamus ml | number | Required |
Require nonnegative independently segmented left and right volumes in milliliters. Return their sum and right-minus-left signed difference.
bilateralMl=leftMl+rightMl; rightMinusLeftMl=rightMl−leftMl Use the matching field units and the exact boundary, ordering and reference rules above.
| Output field | Meaning | Value type |
|---|---|---|
| result | Structured result; its nested fields below contain the actual calculation or selected reference | object |
| result.observedBilateralThalamicVolumeMl | Observed Bilateral Thalamic Volume Ml | number |
| result.signedRightMinusLeftThalamicVolumeMl | Signed Right Minus Left Thalamic Volume Ml; preserve the subtraction order and sign defined in the mechanics | number |
{
"input": {
"independentlySegmentedLeftThalamusMl": 5,
"independentlySegmentedRightThalamusMl": 6
},
"output": {
"result": {
"observedBilateralThalamicVolumeMl": 11,
"signedRightMinusLeftThalamicVolumeMl": 1
}
}
}Limitations and assumptions
Actual acquisition, assessment protocol, instrument version and calibration determine applicability. The tool does not examine a person, classify images, administer a questionnaire or choose diagnostic cutoffs.
Missing required fields, unknown fields, wrong types and violated rules return input issues. Numeric values and outputs must be finite. Extremely large composite outputs are rejected.
Alternative or Complementary methods
For a related step, use Spinal Cord Area C2 Calculator: C2 spinal-cord cross-sectional area depends on independently qualified segmentation and pixel calibration. For a complementary comparison, use Average Cortical Thickness Calculator: Mean cortical thickness can weight vertex measurements by represented surface area.
References
-
Thalamic Subcortical Volume Calculator — tool.io
Similar or alternative tools
- Spinal Cord Area C2 Calculator
C2 spinal-cord cross-sectional area depends on independently qualified segmentation and pixel calibration.
- Average Cortical Thickness Calculator
Mean cortical thickness can weight vertex measurements by represented surface area.