From 0181150f68c08cd7afa942ae67c35c22cd7bdc74 Mon Sep 17 00:00:00 2001
From: Chris Markiewicz <effigies@gmail.com>
Date: Wed, 29 May 2024 11:36:55 -0400
Subject: [PATCH] feat(checks): Add check to ensure MatrixSize and
 nifti_header.dim are consistent

---
 src/schema/rules/checks/mrs.yaml | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/src/schema/rules/checks/mrs.yaml b/src/schema/rules/checks/mrs.yaml
index a38a3007c6..41417feb93 100644
--- a/src/schema/rules/checks/mrs.yaml
+++ b/src/schema/rules/checks/mrs.yaml
@@ -12,3 +12,18 @@ MRSNiftiConsistency:
   checks:
     - sidecar.ResonantNucleus == nifti_header.mrs.ResonantNucleus
     - sidecar.SpectrometerFrequency == nifti_header.mrs.SpectrometerFrequency
+
+MRSMatrixSize:
+  issue:
+    code: MRS_MATRIX_SIZE
+    message: |
+      MatrixSize metadata must match NIfTI header field `dim[1:4]`.
+    level: error
+  selectors:
+    - datatype == "mrs"
+    - nifti_header
+    - type(sidecar.MatrixSize) != "null"
+  checks:
+    - sidecar.MatrixSize[0] == nifti_header.dim[1]
+    - sidecar.MatrixSize[1] == nifti_header.dim[2]
+    - sidecar.MatrixSize[2] == nifti_header.dim[3]