diff --git a/bids-validator/validators/json/schemas/pet.json b/bids-validator/validators/json/schemas/pet.json
index 24f5f827a..328537060 100644
--- a/bids-validator/validators/json/schemas/pet.json
+++ b/bids-validator/validators/json/schemas/pet.json
@@ -249,12 +249,20 @@
     "ImageDecayCorrectionTime",
     "ReconMethodName",
     "ReconMethodParameterLabels",
-    "ReconMethodParameterUnits",
-    "ReconMethodParameterValues",
     "ReconFilterType",
-    "ReconFilterSize",
     "AttenuationCorrection"
   ],
+  "allOf": [
+    {
+      "$ref": "#/dependency-definitions/if-ReconMethodParameterLabels-then-Units-and-Values"
+    },
+    {
+      "$ref": "#/dependency-definitions/if-bolus-infusion-then-infusion-details"
+    },
+    {
+      "$ref": "#/dependency-definitions/if-ReconFilterType-then-ReconFilterSize"
+    }
+  ],
   "dependencies": {
     "TracerMolecularWeight": ["TracerMolecularWeightUnits"],
     "InjectedRadioactivity": ["InjectedRadioactivityUnits"],
@@ -265,5 +273,46 @@
       "ReconMethodParameterUnits",
       "ReconMethodParameterValues"
     ]
+  },
+  "dependency-definitions": {
+    "if-ReconMethodParameterLabels-then-Units-and-Values": {
+      "if": {
+        "type": "object",
+        "properties": {
+          "ReconMethodParameterLabels": { "const": "none" }
+        }
+      },
+      "else": {
+        "required": ["ReconMethodParameterUnits", "ReconMethodParameterValues"]
+      }
+    },
+    "if-bolus-infusion-then-infusion-details": {
+      "if": {
+        "type": "object",
+        "properties": {
+          "ModeOfAdministration": { "const": "bolus-infusion" }
+        }
+      },
+      "then": {
+        "required": [
+          "InfusionRadioactivity",
+          "InfusionStart",
+          "InfusionSpeed",
+          "InfusionSpeedUnits",
+          "InjectedVolume"
+        ]
+      }
+    },
+    "if-ReconFilterType-then-ReconFilterSize": {
+      "if": {
+        "type": "object",
+        "properties": {
+          "ReconMethodParameterLabels": { "const": "none" }
+        }
+      },
+      "else": {
+        "required": ["ReconFilterSize"]
+      }
+    }
   }
 }