From f6cd503c488875c1c34d40896b66957c7584f7ab Mon Sep 17 00:00:00 2001
From: Chris Markiewicz <effigies@gmail.com>
Date: Tue, 21 May 2024 17:51:20 -0400
Subject: [PATCH] SCHEMA: Add check for consistency between MRS header and
 sidecar

---
 src/schema/rules/checks/mrs.yaml | 14 ++++++++++++++
 1 file changed, 14 insertions(+)
 create mode 100644 src/schema/rules/checks/mrs.yaml

diff --git a/src/schema/rules/checks/mrs.yaml b/src/schema/rules/checks/mrs.yaml
new file mode 100644
index 0000000000..a38a3007c6
--- /dev/null
+++ b/src/schema/rules/checks/mrs.yaml
@@ -0,0 +1,14 @@
+---
+MRSNiftiConsistency:
+  issue:
+    code: MRS_NIFTI_CONSISTENCY
+    message: |
+      ResonantNucleus and/or SpectrometerFrequency fields are inconsistent
+      between the NIfTI-MRS header extension and the BIDS sidecar.
+    level: error
+  selectors:
+    - datatype == "mrs"
+    - nifti_header.mrs
+  checks:
+    - sidecar.ResonantNucleus == nifti_header.mrs.ResonantNucleus
+    - sidecar.SpectrometerFrequency == nifti_header.mrs.SpectrometerFrequency