@@ -638,8 +638,8 @@ class CAT12SANLMDenoisingInputSpec(SPMCommandInputSpec):
638638 default_value = 0.5 ,
639639 usedefault = True ,
640640 field = "addnoise" ,
641- desc = """Strength of additional noise in noise-free regions.
642- Add minimal amount of noise in regions without any noise to avoid image segmentation problems.
641+ desc = """Strength of additional noise in noise-free regions.
642+ Add minimal amount of noise in regions without any noise to avoid image segmentation problems.
643643 This parameter defines the strength of additional noise as percentage of the average signal intensity.""" ,
644644 )
645645
@@ -648,10 +648,10 @@ class CAT12SANLMDenoisingInputSpec(SPMCommandInputSpec):
648648 field = "rician" ,
649649 usedefault = True ,
650650 desc = """Rician noise
651- MRIs can have Gaussian or Rician distributed noise with uniform or nonuniform variance across the image.
652- If SNR is high enough (>3) noise can be well approximated by Gaussian noise in the foreground. However, for
653- SENSE reconstruction or DTI data a Rician distribution is expected. Please note that the Rician noise estimation
654- is sensitive for large signals in the neighbourhood and can lead to artefacts, e.g. cortex can be affected by
651+ MRIs can have Gaussian or Rician distributed noise with uniform or nonuniform variance across the image.
652+ If SNR is high enough (>3) noise can be well approximated by Gaussian noise in the foreground. However, for
653+ SENSE reconstruction or DTI data a Rician distribution is expected. Please note that the Rician noise estimation
654+ is sensitive for large signals in the neighbourhood and can lead to artefacts, e.g. cortex can be affected by
655655 very high values in the scalp or in blood vessels.""" ,
656656 )
657657
@@ -669,11 +669,11 @@ class CAT12SANLMDenoisingInputSpec(SPMCommandInputSpec):
669669 field = "nlmfilter.optimized.NCstr" ,
670670 usedefault = True ,
671671 desc = """Strength of Noise Corrections
672- Strength of the (sub-resolution) spatial adaptive non local means (SANLM) noise correction. Please note
673- that the filter strength is automatically estimated. Change this parameter only for specific conditions. The
674- "light" option applies half of the filter strength of the adaptive "medium" cases, whereas the "strong"
672+ Strength of the (sub-resolution) spatial adaptive non local means (SANLM) noise correction. Please note
673+ that the filter strength is automatically estimated. Change this parameter only for specific conditions. The
674+ "light" option applies half of the filter strength of the adaptive "medium" cases, whereas the "strong"
675675 option uses the full filter strength, force sub-resolution filtering and applies an additional iteration.
676- Sub-resolution filtering is only used in case of high image resolution below 0.8 mm or in case of the
676+ Sub-resolution filtering is only used in case of high image resolution below 0.8 mm or in case of the
677677 "strong" option. light = 2, medium = -Inf, strong = 4""" ,
678678 )
679679
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