NMR Water Suppression
Screen NMR water-window residual intensity relative to a reference region.
Description
NMR water-suppression screening expresses residual water signal relative to a reference.
NMR water-suppression screening expresses residual water signal relative to a reference. The caller supplies the acceptable percentage.1
Screen NMR water-window residual intensity relative to a reference region.
When to use NMR Water Suppression
Use this tool to screen NMR water-window residual intensity relative to a reference region.
Prepare the measured profile, formula counts, upstream model outputs or caller-defined reference criteria requested. Keep paired entries aligned and units, sample basis and preprocessing consistent.
How to use NMR Water Suppression and understand its results
- Prepare the measured profile, formula counts, upstream model outputs or caller-defined reference criteria requested. Keep paired entries aligned and units, sample basis and preprocessing consistent.
- Enter waterWindowIntegral, referenceRegionIntegral, maximumResidualPercent using the field table and calculation rules, then run the tool.
- Read residualPercent, passes. The explanation below defines the units, signs, ordering and any flags or placeholder values.
- If the tool reports an input issue, correct the values and run it again. Apply the stated assumptions when interpreting a successfully returned result.
| Input field | Meaning | Value type; see rules below | Requirement |
|---|---|---|---|
| waterWindowIntegral | Water window integral | number | Required |
| referenceRegionIntegral | Reference region integral | number | Required |
| maximumResidualPercent | Maximum residual percent | number | Required |
Enter nonnegative water signal, positive reference signal and finite percentage maximum. Return residual percentage and inclusive ≤maximum flag.
residual%=100 waterSignal/referenceSignal Units, indexing, boundary conditions and exceptional cases are defined in the calculation rules above.
| Output field | Meaning | Value type |
|---|---|---|
| residualPercent | Residual percent | number |
| passes | Passes | boolean |
{
"input": {
"waterWindowIntegral": 5,
"referenceRegionIntegral": 100,
"maximumResidualPercent": 10
},
"output": {
"residualPercent": 5,
"passes": true
}
}Limitations and assumptions
No spectrum filtering or pulse-sequence adjustment is performed. The criterion may be negative and is not an embedded experimental standard.
Numeric inputs must be finite. Follow the calculation-specific rules for overflow, underflow and exceptional cases. Missing required fields, extra fields, wrong value types and violations of the calculation rules are input errors. A successfully returned false flag is an evaluated outcome; its meaning is explained above.
Alternative or Complementary methods
Use NMR Relaxation Delay: Check NMR relaxation delay against an injected T1 multiple. For a complementary task, use NMR Bucket Integrals: Bin NMR spectral integrals by configurable chemical-shift width.
References
-
NMR Water Suppression — tool.io
Similar or alternative tools
- NMR Relaxation Delay
Check NMR relaxation delay against an injected T1 multiple.
- NMR Bucket Integrals
Bin NMR spectral integrals by configurable chemical-shift width.