Add TablePosition tag to the MRI Hardware section and to the glossary

src/schema/objects/metadata.yaml

@@ -3366,6 +3366,20 @@ SubjectArtefactDescription:
     If this field is set to `"n/a"`, it will be interpreted as absence of major
     source of artifacts except cardiac and blinks.
   type: string
+TablePosition:
+  name: TablePosition
+  display_name: Table Position
+  description: |
+    The x, y and z coordinates of the table relative to an implementation
+    specific reference point. The array MUST contain three numeric values
+    corresponding to x, y, and z axis of the coordinate system in that exact
+    order.
+  type: array
+  minItems: 3
+  maxItems: 3
+  items:
+    type: number
+    unit: mm
 TaskDescription:
   name: TaskDescription
   display_name: Task Description

src/schema/rules/sidecars/mri.yaml

@@ -34,6 +34,7 @@ MRIHardware:
     MRTransmitCoilSequence: recommended
     MatrixCoilMode: recommended
     CoilCombinationMethod: recommended
+    TablePosition: recommended
 
 MRIScannerHardwareASL:
   selectors: