--- a
+++ b/src/utils.py
@@ -0,0 +1,26 @@
+import pydicom
+
+
+def window_image(img, window_center,window_width, intercept, slope):
+    img = (img*slope +intercept)
+    img_min = window_center - window_width//2
+    img_max = window_center + window_width//2
+    img[img<img_min] = img_min
+    img[img>img_max] = img_max
+    return img 
+
+
+def get_first_of_dicom_field_as_int(x):
+    #get x[0] as in int is x is a 'pydicom.multival.MultiValue', otherwise get int(x)
+    if type(x) == pydicom.multival.MultiValue:
+        return int(x[0])
+    else:
+        return int(x)
+
+
+def get_windowing(data):
+    dicom_fields = [data[('0028','1050')].value, #window center
+                    data[('0028','1051')].value, #window width
+                    data[('0028','1052')].value, #intercept
+                    data[('0028','1053')].value] #slope
+    return [get_first_of_dicom_field_as_int(x) for x in dicom_fields]