fix: Add support for single entries in SequenceOfUltrasoundRegions. M… (#1559)

* fix: Add support for single entries in SequenceOfUltrasoundRegions. More than one region will need lower-level changes

* Update platform/core/src/utils/metadataProvider/getPixelSpacingInformation.js

Co-authored-by: Danny Brown <danny.ri.brown@gmail.com>

platform/core/src/utils/metadataProvider/getPixelSpacingInformation.js

@@ -19,45 +19,53 @@ export default function getPixelSpacingInformation(instance) {
     '1.2.840.10008.5.1.4.1.1.12.1.1', //	Enhanced XA Image Storage
     '1.2.840.10008.5.1.4.1.1.12.2', //	X-Ray Radiofluoroscopic Image Storage
     '1.2.840.10008.5.1.4.1.1.12.2.1', //	Enhanced XRF Image Storage
-    '1.2.840.10008.5.1.4.1.1.12.3' // X-Ray Angiographic Bi-plane Image Storage	Retired
+    '1.2.840.10008.5.1.4.1.1.12.3', // X-Ray Angiographic Bi-plane Image Storage	Retired
   ];
 
-  const { PixelSpacing, ImagerPixelSpacing, SOPClassUID, PixelSpacingCalibrationType, PixelSpacingCalibrationDescription, EstimatedRadiographicMagnificationFactor } = instance;
+  const {
+    PixelSpacing,
+    ImagerPixelSpacing,
+    SOPClassUID,
+    PixelSpacingCalibrationType,
+    PixelSpacingCalibrationDescription,
+    EstimatedRadiographicMagnificationFactor,
+    SequenceOfUltrasoundRegions,
+  } = instance;
   const isProjection = projectionRadiographSOPClassUIDs.includes(SOPClassUID);
 
   const TYPES = {
     NOT_APPLICABLE: 'NOT_APPLICABLE',
     UNKNOWN: 'UNKNOWN',
     CALIBRATED: 'CALIBRATED',
-    DETECTOR: 'DETECTOR'
+    DETECTOR: 'DETECTOR',
   };
 
-  if (isProjection === false && !ImagerPixelSpacing) {
+  if (isProjection && !ImagerPixelSpacing) {
-    // If only Pixel Spacing is present, and this is not a projection radiograph,
-    // we can stop here
-    return {
-      PixelSpacing,
-      type: TYPES.NOT_APPLICABLE,
-      isProjection
-    };
-  } else if (isProjection && !ImagerPixelSpacing) {
     // If only Pixel Spacing is present, and this is a projection radiograph,
     // PixelSpacing should be used, but the user should be informed that
     // what it means is unknown
     return {
       PixelSpacing,
       type: TYPES.UNKNOWN,
-      isProjection
+      isProjection,
     };
-  } else if (PixelSpacing && ImagerPixelSpacing && PixelSpacing === ImagerPixelSpacing) {
+  } else if (
+    PixelSpacing &&
+    ImagerPixelSpacing &&
+    PixelSpacing === ImagerPixelSpacing
+  ) {
     // If Imager Pixel Spacing and Pixel Spacing are present and they have the same values,
     // then the user should be informed that the measurements are at the detector plane
     return {
       PixelSpacing,
       type: TYPES.DETECTOR,
-      isProjection
+      isProjection,
     };
-  } else if (PixelSpacing && ImagerPixelSpacing && PixelSpacing !== ImagerPixelSpacing) {
+  } else if (
+    PixelSpacing &&
+    ImagerPixelSpacing &&
+    PixelSpacing !== ImagerPixelSpacing
+  ) {
     // If Imager Pixel Spacing and Pixel Spacing are present and they have different values,
     // then the user should be informed that these are "calibrated"
     // (in some unknown manner if Pixel Spacing Calibration Type and/or
@@ -67,7 +75,7 @@ export default function getPixelSpacingInformation(instance) {
       type: TYPES.CALIBRATED,
       isProjection,
       PixelSpacingCalibrationType,
-      PixelSpacingCalibrationDescription
+      PixelSpacingCalibrationDescription,
     };
   } else if (!PixelSpacing && ImagerPixelSpacing) {
     let CorrectedImagerPixelSpacing = ImagerPixelSpacing;
@@ -75,16 +83,48 @@ export default function getPixelSpacingInformation(instance) {
       // Note that in IHE Mammo profile compliant displays, the value of Imager Pixel Spacing is required to be corrected by
       // Estimated Radiographic Magnification Factor and the user informed of that.
       // TODO: should this correction be done before all of this logic?
-      CorrectedImagerPixelSpacing = ImagerPixelSpacing.map(pixelSpacing => pixelSpacing / EstimatedRadiographicMagnificationFactor);
+      CorrectedImagerPixelSpacing = ImagerPixelSpacing.map(
+        pixelSpacing => pixelSpacing / EstimatedRadiographicMagnificationFactor
+      );
     } else {
-      log.info('EstimatedRadiographicMagnificationFactor was not present. Unable to correct ImagerPixelSpacing.');
+      log.info(
+        'EstimatedRadiographicMagnificationFactor was not present. Unable to correct ImagerPixelSpacing.'
+      );
     }
 
     return {
       PixelSpacing: CorrectedImagerPixelSpacing,
       isProjection,
     };
+  } else if (
+    SequenceOfUltrasoundRegions &&
+    typeof SequenceOfUltrasoundRegions === 'object'
+  ) {
+    const { PhysicalDeltaX, PhysicalDeltaY } = SequenceOfUltrasoundRegions;
+    const USPixelSpacing = [PhysicalDeltaX * 10, PhysicalDeltaY * 10];
+
+    return {
+      PixelSpacing: USPixelSpacing,
+    };
+  } else if (
+    SequenceOfUltrasoundRegions &&
+    Array.isArray(SequenceOfUltrasoundRegions) &&
+    SequenceOfUltrasoundRegions.length > 1
+  ) {
+    log.warn(
+      'Sequence of Ultrasound Regions > one entry. This is not yet implemented, all measurements will be shown in pixels.'
+    );
+  } else if (isProjection === false && !ImagerPixelSpacing) {
+    // If only Pixel Spacing is present, and this is not a projection radiograph,
+    // we can stop here
+    return {
+      PixelSpacing,
+      type: TYPES.NOT_APPLICABLE,
+      isProjection,
+    };
   }
 
-  log.info('Unknown combination of PixelSpacing and ImagerPixelSpacing identified. Unable to determine spacing.');
+    log.info(
+    'Unknown combination of PixelSpacing and ImagerPixelSpacing identified. Unable to determine spacing.'
+  );
 }