diff --git a/Startcode/imageInput.c b/Startcode/imageInput.c
index d8e0cca..4bf7f8d 100644
--- a/Startcode/imageInput.c
+++ b/Startcode/imageInput.c
@@ -19,6 +19,15 @@ static int Header_check(FILE *file) {
     return 0;
 }
 
+static int readDimensions(FILE *file, unsigned short werte[]) {
+    size_t anzahl_gelesen = fread(werte, sizeof (unsigned short), 3, file);
+
+    if (anzahl_gelesen == 3) {
+    return 1;
+    }
+    return 0;
+}
+
 GrayScaleImageSeries *readImages(const char *path)
 {
     GrayScaleImageSeries *series = NULL;
@@ -34,6 +43,12 @@ GrayScaleImageSeries *readImages(const char *path)
         return NULL;
     }
 
+    unsigned short werte[3];
+    if (readDimensions(bilder, werte) == 0) {
+        fclose(bilder);
+        return NULL;
+    }
+
     return series;
 }