diff --git a/dicoogle/src/main/java/pt/ua/dicoogle/plugins/PluginController.java b/dicoogle/src/main/java/pt/ua/dicoogle/plugins/PluginController.java
index cb7ae5c0a..b8aa92b4b 100755
--- a/dicoogle/src/main/java/pt/ua/dicoogle/plugins/PluginController.java
+++ b/dicoogle/src/main/java/pt/ua/dicoogle/plugins/PluginController.java
@@ -30,6 +30,7 @@
 import pt.ua.dicoogle.sdk.datastructs.Report;
 import pt.ua.dicoogle.sdk.datastructs.SearchResult;
 import pt.ua.dicoogle.sdk.datastructs.dim.DimLevel;
+import pt.ua.dicoogle.sdk.imageworker.ImageWorkerInterface;
 import pt.ua.dicoogle.sdk.settings.ConfigurationHolder;
 import pt.ua.dicoogle.sdk.task.JointQueryTask;
 import pt.ua.dicoogle.sdk.task.Task;
@@ -344,6 +345,19 @@ public Collection<JettyPluginInterface> getServletPlugins() {
         return this.getServletPlugins(true);
     }
 
+    public Collection<ImageWorkerInterface> getImageWorkerPlugins(boolean onlyEnabled) {
+        List<ImageWorkerInterface> plugins = new ArrayList<>();
+        for (PluginSet pSet : pluginSets) {
+            for (ImageWorkerInterface i : pSet.getImageWorkerPlugins()) {
+                if (!i.isEnabled() && onlyEnabled) {
+                    continue;
+                }
+                plugins.add(i);
+            }
+        }
+        return plugins;
+    }
+
     public Collection<String> getPluginSetNames() {
         Collection<String> l = new ArrayList<>();
         for (PluginSet s : this.pluginSets) {
@@ -512,6 +526,17 @@ public StorageInterface getStorageByName(String name, boolean onlyEnabled) {
         return null;
     }
 
+    public ImageWorkerInterface getImageWorkerInterfaceByName(String name, boolean onlyEnabled) {
+        Collection<ImageWorkerInterface> plugins = getImageWorkerPlugins(onlyEnabled);
+        for (ImageWorkerInterface p : plugins) {
+            if (p.getName().equalsIgnoreCase(name)) {
+                // logger.info("Retrived Query Provider: "+name);
+                return p;
+            }
+        }
+        logger.debug("No image worker matching name {} for onlyEnabled = {}", name, onlyEnabled);
+        return null;
+    }
 
     public JointQueryTask queryAll(JointQueryTask holder, final String query, final Object... parameters) {
         List<String> providers = this.getQueryProvidersName(true);
diff --git a/sdk/pom.xml b/sdk/pom.xml
index 57c6c3d1c..a2e3e4f4f 100644
--- a/sdk/pom.xml
+++ b/sdk/pom.xml
@@ -174,6 +174,12 @@
             <version>${dcm4che.version}</version>
         </dependency>
 
+        <dependency>
+            <artifactId>dcm4che-core</artifactId>
+            <groupId>org.dcm4che</groupId>
+            <version>3.3.7</version>
+        </dependency>
+
         <dependency>
             <groupId>dcm4che</groupId>
             <artifactId>dcm4che-net</artifactId>
diff --git a/sdk/src/main/java/pt/ua/dicoogle/sdk/imageworker/ImageROI.java b/sdk/src/main/java/pt/ua/dicoogle/sdk/imageworker/ImageROI.java
index 8f5222d3f..4ac85de70 100644
--- a/sdk/src/main/java/pt/ua/dicoogle/sdk/imageworker/ImageROI.java
+++ b/sdk/src/main/java/pt/ua/dicoogle/sdk/imageworker/ImageROI.java
@@ -10,4 +10,33 @@ public class ImageROI {
 
     private URI roi;
 
+    public ImageROI(int width, int height, URI roi) {
+        this.width = width;
+        this.height = height;
+        this.roi = roi;
+    }
+
+    public int getWidth() {
+        return width;
+    }
+
+    public void setWidth(int width) {
+        this.width = width;
+    }
+
+    public int getHeight() {
+        return height;
+    }
+
+    public void setHeight(int height) {
+        this.height = height;
+    }
+
+    public URI getRoi() {
+        return roi;
+    }
+
+    public void setRoi(URI roi) {
+        this.roi = roi;
+    }
 }
diff --git a/sdk/src/main/java/pt/ua/dicoogle/sdk/imageworker/ImageWorkerInterface.java b/sdk/src/main/java/pt/ua/dicoogle/sdk/imageworker/ImageWorkerInterface.java
index c25c46832..b0e4b62eb 100644
--- a/sdk/src/main/java/pt/ua/dicoogle/sdk/imageworker/ImageWorkerInterface.java
+++ b/sdk/src/main/java/pt/ua/dicoogle/sdk/imageworker/ImageWorkerInterface.java
@@ -1,11 +1,11 @@
 package pt.ua.dicoogle.sdk.imageworker;
 
-import org.dcm4che2.io.DicomInputStream;
+import pt.ua.dicoogle.sdk.DicooglePlugin;
+import pt.ua.dicoogle.sdk.datastructs.SearchResult;
 import pt.ua.dicoogle.sdk.datastructs.dim.BulkAnnotation;
 
-public abstract class ImageWorkerInterface {
+public interface ImageWorkerInterface extends DicooglePlugin {
+    public abstract ImageROI extractROI(SearchResult sr, BulkAnnotation annotation);
 
-    public abstract ImageROI extractROI(DicomInputStream is, BulkAnnotation annotation);
-
-    public abstract Iterable<ImageROI> extractROIs(DicomInputStream is, Iterable<BulkAnnotation> annotations);
+    public abstract Iterable<ImageROI> extractROIs(SearchResult sr, Iterable<BulkAnnotation> annotations);
 }