diff --git a/extensions/default/src/DicomWebDataSource/utils/StaticWadoClient.test.ts b/extensions/default/src/DicomWebDataSource/utils/StaticWadoClient.test.ts
new file mode 100644
index 00000000000..bfc6da54dff
--- /dev/null
+++ b/extensions/default/src/DicomWebDataSource/utils/StaticWadoClient.test.ts
@@ -0,0 +1,54 @@
+import StaticWadoClient from './StaticWadoClient';
+
+describe('StaticWadoClient', () => {
+  const client = Object.create(StaticWadoClient.prototype) as StaticWadoClient;
+  (client as any).config = {};
+
+  describe('compareValues', () => {
+    it('matches wildcard string filters case-insensitively', () => {
+      expect(client.compareValues('*brain*', 'BRAIN WO CONTRAST', {})).toBe(true);
+      expect(client.compareValues('abc*', 'ABC123', {})).toBe(true);
+      expect(client.compareValues('*xyz', 'ABCXYZ', {})).toBe(true);
+    });
+
+    it('matches exact string filters case-insensitively', () => {
+      expect(client.compareValues('mrn123', 'MRN123', {})).toBe(true);
+      expect(client.compareValues('acc-42', 'ACC-42', {})).toBe(true);
+    });
+  });
+
+  describe('filterItem', () => {
+    it('matches study text filters case-insensitively', () => {
+      const study = {
+        '00100020': { Value: ['MRN123'] },
+        '00081030': { Value: ['BRAIN WO CONTRAST'] },
+        '00080050': { Value: ['ACC-42'] },
+      };
+
+      expect(
+        client.filterItem(
+          '00100020',
+          { '00100020': '*mrn123*' },
+          study,
+          StaticWadoClient.studyFilterKeys
+        )
+      ).toBeTruthy();
+      expect(
+        client.filterItem(
+          'studydescription',
+          { studydescription: '*brain*' },
+          study,
+          StaticWadoClient.studyFilterKeys
+        )
+      ).toBeTruthy();
+      expect(
+        client.filterItem(
+          'accessionnumber',
+          { accessionnumber: '*acc-42*' },
+          study,
+          StaticWadoClient.studyFilterKeys
+        )
+      ).toBeTruthy();
+    });
+  });
+});
diff --git a/extensions/default/src/DicomWebDataSource/utils/StaticWadoClient.ts b/extensions/default/src/DicomWebDataSource/utils/StaticWadoClient.ts
index a34cc9d9a94..359265ffd2b 100644
--- a/extensions/default/src/DicomWebDataSource/utils/StaticWadoClient.ts
+++ b/extensions/default/src/DicomWebDataSource/utils/StaticWadoClient.ts
@@ -190,21 +190,33 @@ export default class StaticWadoClient extends api.DICOMwebClient {
       );
     }
 
-    if (typeof actual == 'string') {
+    if (typeof actual === 'string' && typeof desired === 'string') {
+      const normalizedActual = actual.toLowerCase();
+      const normalizedDesired = desired.toLowerCase();
+
       if (actual.length === 0) {
         return true;
       }
       if (desired.length === 0 || desired === '*') {
         return true;
       }
-      if (desired[0] === '*' && desired[desired.length - 1] === '*') {
-        // console.log(`Comparing ${actual} to ${desired.substring(1, desired.length - 1)}`)
-        return actual.indexOf(desired.substring(1, desired.length - 1)) != -1;
-      } else if (desired[desired.length - 1] === '*') {
-        return actual.indexOf(desired.substring(0, desired.length - 1)) != -1;
-      } else if (desired[0] === '*') {
-        return actual.indexOf(desired.substring(1)) === actual.length - desired.length + 1;
+      if (normalizedDesired[0] === '*' && normalizedDesired[normalizedDesired.length - 1] === '*') {
+        return (
+          normalizedActual.indexOf(normalizedDesired.substring(1, normalizedDesired.length - 1)) !=
+          -1
+        );
+      } else if (normalizedDesired[normalizedDesired.length - 1] === '*') {
+        return (
+          normalizedActual.indexOf(normalizedDesired.substring(0, normalizedDesired.length - 1)) !=
+          -1
+        );
+      } else if (normalizedDesired[0] === '*') {
+        return (
+          normalizedActual.indexOf(normalizedDesired.substring(1)) ===
+          normalizedActual.length - normalizedDesired.length + 1
+        );
       }
+      return normalizedDesired === normalizedActual;
     }
     return desired === actual;
   }