diff --git a/src/main/java/org/kpmp/slides/Metadata.java b/src/main/java/org/kpmp/slides/Metadata.java
index 1adbc71..ab6be73 100644
--- a/src/main/java/org/kpmp/slides/Metadata.java
+++ b/src/main/java/org/kpmp/slides/Metadata.java
@@ -7,6 +7,7 @@ public class Metadata {
 
 	// @Field("aperio")
 	private Aperio aperio;
+	private OpenSlide openslide;
 
 	public Aperio getAperio() {
 		return aperio;
@@ -16,5 +17,13 @@ public void setAperio(Aperio aperio) {
 		this.aperio = aperio;
 	}
 
+	public OpenSlide getOpenSlide() {
+		return openslide;
+	}
+
+	public void setOpenSlide(OpenSlide openslide) {
+		this.openslide = openslide;
+	}
+
 
 }
diff --git a/src/main/java/org/kpmp/slides/OpenSlide.java b/src/main/java/org/kpmp/slides/OpenSlide.java
new file mode 100644
index 0000000..0a6d3a7
--- /dev/null
+++ b/src/main/java/org/kpmp/slides/OpenSlide.java
@@ -0,0 +1,27 @@
+package org.kpmp.slides;
+
+import org.springframework.data.mongodb.core.mapping.Document;
+
+@Document(collection = "patients")
+public class OpenSlide {
+	
+    private String mpp_x;
+	private String mpp_y;
+
+	public String getMpp_x() {
+		return mpp_x;
+	}
+
+	public void setMpp_x(String mpp_x) {
+		this.mpp_x = mpp_x;
+	}
+	
+	public String getMpp_y() {
+		return mpp_y;
+	}
+
+	public void setMpp_y(String mpp_y) {
+		this.mpp_y = mpp_y;
+	}
+	
+}
diff --git a/src/test/java/org/kpmp/slides/SlideTest.java b/src/test/java/org/kpmp/slides/SlideTest.java
index da2673d..830c445 100644
--- a/src/test/java/org/kpmp/slides/SlideTest.java
+++ b/src/test/java/org/kpmp/slides/SlideTest.java
@@ -58,4 +58,13 @@ public void testSetAperio() {
 
 		assertEquals(aperio, metadata.getAperio());
 	}
+
+	@Test
+	public void testSetOpenSlide() {
+		OpenSlide openSlide = new OpenSlide();
+		Metadata metadata = new Metadata();
+		metadata.setOpenSlide(openSlide);
+
+		assertEquals(openSlide, metadata.getOpenSlide());
+	}
 }