Thal Phase Lookup

Bounded offline reference: Thalamyloid phases describe regional progression of beta-amyloid deposition in neuropathological assessment. Source: Thalet al.2002. No phase diagnosis from MRI or automatic histology classification. Explicit topic keys: 1, 2, 3, 4, 5. Not a full/current corpus, diagnosis, treatment recommendation or safety certification.

Description

Thal phases describe a framework for the anatomical distribution of amyloid deposition.

Thal phases describe a framework for the anatomical distribution of amyloid deposition.^[1]

A stored phase explanation does not establish a case's neuropathology.

When to use Thal Phase Lookup

Use this tool to read a bounded explanation for an exact reference topic. Establish the assessment or recording protocol, units, instrument version and independently applicable reference or calibration.

How to use Thal Phase Lookup and understand its results

Establish the assessment or recording protocol, units, instrument version and independently applicable reference or calibration.
Enter topic, using the field meanings and rules below, then run the tool.
Read result.text. 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
topic	Topic	string	Required

Choose one exact topic token from the table. The implementation looks up the stored value and returns it in the documented output field. Matching is case-sensitive; unrecognized tokens fail. This is an offline bounded reference, not a live catalogue or independent attribution.

Topic token	Stored value
1	Neocortical deposition.
2	Additional allocortical involvement.
3	Additional diencephalic/striatal and related subcortical involvement.
4	Additional brainstem involvement.
5	Additional cerebellar involvement.

value=referenceTable[exactToken]

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.text	Text	string

json

{
  "input": {
    "topic": "1"
  },
  "output": {
    "result": {
      "text": "Neocortical deposition."
    }
  }
}

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 NPI Total Calculator: The NPI combines independently coded domain frequency and severity findings. For a complementary comparison, use Clinical Dementia Rating Calculator: Clinical Dementia Rating depends on its adopted assessment protocol and domain evidence.

References

Thal Phase Lookup — tool.io

Similar or alternative tools

NPI Total Calculator
The NPI combines independently coded domain frequency and severity findings.
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