feat: Add OCT normalizer (#402)

* Add OCT normalizer

* Add OCT normalizer test

* Reformat dicom meta dictionary

---------

Co-authored-by: Igor Šimko <[email protected]>

Author: igorsimko

src/DicomMetaDictionary.js

@@ -383,7 +383,8 @@ DicomMetaDictionary.sopClassNamesByUID = {
     "1.2.840.10008.5.1.4.1.1.128": "PETImage",
     "1.2.840.10008.5.1.4.1.1.130": "EnhancedPETImage",
     "1.2.840.10008.5.1.4.1.1.128.1": "LegacyConvertedEnhancedPETImage",
-    "1.2.840.10008.5.1.4.1.1.77.1.5.1": "OphthalmicPhotography8BitImage"
+    "1.2.840.10008.5.1.4.1.1.77.1.5.1": "OphthalmicPhotography8BitImage",
+    "1.2.840.10008.5.1.4.1.1.77.1.5.4": "OphthalmicTomographyImage"
 };
 
 DicomMetaDictionary.dictionary = dictionary;

src/normalizers.js

@@ -53,6 +53,7 @@ class Normalizer {
         sopClassUIDMap[toUID.DeformableSpatialRegistration] = DSRNormalizer;
         sopClassUIDMap[toUID.OphthalmicPhotography8BitImage] =
             OPImageNormalizer;
+        sopClassUIDMap[toUID.OphthalmicTomographyImage] = OCTImageNormalizer;
         return sopClassUIDMap[sopClassUID];
     }
 
@@ -68,7 +69,8 @@ class Normalizer {
             toUID.EnhancedPETImage,
             toUID.LegacyConvertedEnhancedPETImage,
             toUID.Segmentation,
-            toUID.ParametricMapStorage
+            toUID.ParametricMapStorage,
+            toUID.OphthalmicTomographyImage
         ];
         return multiframeSOPClasses.indexOf(sopClassUID) !== -1;
     }
@@ -539,6 +541,12 @@ class OPImageNormalizer extends Normalizer {
     }
 }
 
+class OCTImageNormalizer extends ImageNormalizer {
+    normalize() {
+        super.normalize();
+    }
+}
+
 export { Normalizer };
 export { ImageNormalizer };
 export { MRImageNormalizer };
@@ -552,3 +560,4 @@ export { SEGImageNormalizer };
 export { PMImageNormalizer };
 export { DSRNormalizer };
 export { OPImageNormalizer };
+export { OCTImageNormalizer };

test/normalizers.test.js

@@ -2,6 +2,7 @@ import "regenerator-runtime/runtime.js";
 
 import fs from "fs";
 import { jest } from "@jest/globals";
+import { getTestDataset } from "./testUtils";
 import { DicomMessage } from "../src/DicomMessage";
 import { DicomMetaDictionary } from "../src/DicomMetaDictionary";
 import dcmjs from "../src";
@@ -10,12 +11,30 @@ import dcmjs from "../src";
 jest.setTimeout(60000);
 
 it("test_normalizer_op", async () => {
-    const file = fs.readFileSync('test/sample-op.dcm');
+    const file = fs.readFileSync("test/sample-op.dcm");
     const dicomDict = DicomMessage.readFile(file.buffer);
 
     const dataset = DicomMetaDictionary.naturalizeDataset(dicomDict.dict);
-    const multiframe = dcmjs.normalizers.Normalizer.normalizeToDataset([dataset]);
+    const multiframe = dcmjs.normalizers.Normalizer.normalizeToDataset([
+        dataset
+    ]);
 
     expect(dataset.NumberOfFrames).toEqual(1);
     expect(multiframe.NumberOfFrames).toEqual(1);
-});
+});
+
+it("test_normalizer_oct", async () => {
+    const url =
+        "https://github.com/dcmjs-org/data/releases/download/oct/oct.dcm";
+    const dcmPath = await getTestDataset(url, "oct.dcm");
+    const file = fs.readFileSync(dcmPath);
+    const dicomDict = DicomMessage.readFile(file.buffer);
+
+    const dataset = DicomMetaDictionary.naturalizeDataset(dicomDict.dict);
+    const multiframe = dcmjs.normalizers.Normalizer.normalizeToDataset([
+        dataset
+    ]);
+
+    expect(dataset.NumberOfFrames).toEqual(97);
+    expect(multiframe.NumberOfFrames).toEqual(97);
+});