diff --git a/src/modality-specific-files/magnetic-resonance-imaging-data.md b/src/modality-specific-files/magnetic-resonance-imaging-data.md
index d5e8e6abc9..9722b7824b 100644
--- a/src/modality-specific-files/magnetic-resonance-imaging-data.md
+++ b/src/modality-specific-files/magnetic-resonance-imaging-data.md
@@ -667,7 +667,7 @@ The definitions of these fields can be found in
 and a guide for using macros can be found at
  https://github.com/bids-standard/bids-specification/blob/master/macros_doc.md
 -->
-{{ MACROS___make_suffix_table(["ADC", "TRACE"]) }}
+{{ MACROS___make_suffix_table(["adc", "trace", "fa", "colfa"]) }}
 
 <!--
 This block generates a filename templates.
@@ -696,9 +696,9 @@ In such a case, two files could have the following names:
 The user is free to choose any other label than `singleband` and
 `multiband`, as long as they are consistent across subjects and sessions.
 
-Scanner-generated TRACE and ADC volumes MAY be included using the
-`TRACE` and `ADC` suffixes.
-If TRACE or ADC volume filenames match a diffusion series with all applicable entities,
+Scanner-generated trace, ADC and fractional anisotropy (fa and colfa) volumes MAY be included
+using the `trace`, `adc`, `fa` and `colfa` suffixes, respectively.
+If trace, adc, fa, or colfa volume filenames match a diffusion series with all applicable entities,
 such volumes SHOULD be computed from that series.
 Otherwise, some entity, such as [`acq-<label>`](../appendices/entities.md#acq),
 SHOULD be used to indicate that the files are unrelated.
diff --git a/src/schema/objects/suffixes.yaml b/src/schema/objects/suffixes.yaml
index b370ef646a..e642b8367e 100644
--- a/src/schema/objects/suffixes.yaml
+++ b/src/schema/objects/suffixes.yaml
@@ -6,8 +6,8 @@ TwoPE:
   display_name: 2-photon excitation microscopy
   description: |
     2-photon excitation microscopy imaging data
-ADC:
-  value: ADC
+adc:
+  value: adc
   display_name: Apparent diffusion coefficient (ADC)
   description:
     Apparent diffusion coefficient (ADC) map
@@ -42,11 +42,23 @@ DIC:
   display_name: Differential interference contrast microscopy
   description: |
     Differential interference contrast microscopy imaging data
+colfa:
+  value: colfa
+  display_name: Colored Fractional Anisotropy image
+  description: |
+    Diffusion images reflecting the directionality of the diffusion tensor color-coded in red for
+    left-right oriented fibers, in blue for superior-inferior oriented fibers and green for
+    anterior-posterior oriented fibers.
 DF:
   value: DF
   display_name: Dark-field microscopy
   description: |
     Dark-field microscopy imaging data
+fa:
+  value: fa
+  display_name: Fractional Anisotropy image
+  description: |
+    Diffusion images reflecting the directionality of the diffusion tensor
 FLAIR:
   value: FLAIR
   display_name: Fluid attenuated inversion recovery image
@@ -465,8 +477,8 @@ TEM:
   display_name: Transmission electron microscopy
   description: |
     Transmission electron microscopy imaging data
-TRACE:
-  value: TRACE
+trace:
+  value: trace
   display_name: Trace diffusion weighted image
   description: |
     Diffusion images proportional to the trace of the diffusion tensor
diff --git a/src/schema/rules/files/deriv/imaging.yaml b/src/schema/rules/files/deriv/imaging.yaml
index c9a0e12877..07f7678115 100644
--- a/src/schema/rules/files/deriv/imaging.yaml
+++ b/src/schema/rules/files/deriv/imaging.yaml
@@ -26,10 +26,10 @@ dwi_volumetric:
     density: optional
     description: optional
 
-dwi_isotropic:
-  $ref: rules.files.raw.dwi.isotropic
+dwi_scannerderivatives:
+  $ref: rules.files.raw.dwi.ScannerDerivatives
   entities:
-    $ref: rules.files.raw.dwi.isotropic.entities
+    $ref: rules.files.raw.dwi.ScannerDerivatives.entities
     space: optional
     resolution: optional
     density: optional
diff --git a/src/schema/rules/files/raw/dwi.yaml b/src/schema/rules/files/raw/dwi.yaml
index ff18501af9..b006f7efb3 100644
--- a/src/schema/rules/files/raw/dwi.yaml
+++ b/src/schema/rules/files/raw/dwi.yaml
@@ -40,10 +40,12 @@ sbref:
     chunk: optional
 
 # Common scanner-generated derivatives need raw names
-isotropic:
+ScannerDerivatives:
   suffixes:
-    - ADC
-    - TRACE
+    - adc
+    - colfa
+    - fa
+    - trace
   extensions:
     - .nii.gz
     - .nii