Index: ImageViewer/Graphics/InvariantTextPrimitive.cs
===================================================================
--- ImageViewer/Graphics/InvariantTextPrimitive.cs	(revision 10063)
+++ ImageViewer/Graphics/InvariantTextPrimitive.cs	(working copy)
@@ -51,6 +51,7 @@
 	[DicomSerializableGraphicAnnotation(typeof (TextGraphicAnnotationSerializer))]
 	public class InvariantTextPrimitive : InvariantPrimitive, ITextGraphic
 	{
+        private TextAnchorMode _textAnchorMode;
 		private string _text;
 		private float _sizeInPoints;
 		private string _font;
@@ -64,6 +65,7 @@
 		{
 			this.SizeInPoints = 10;
 			this.Font = "Arial";
+            this.AnchorRelative = TextAnchorMode.Center;
 		}
 
 		/// <summary>
@@ -76,6 +78,25 @@
 			_text = text;
 		}
 
+        /// <summary>
+        /// Gets or sets the mode for the anchor relative to the text.
+        /// </summary>
+        public TextAnchorMode AnchorRelative
+        {
+            get
+            {
+                return _textAnchorMode;
+            }
+            set
+            {
+                if (_textAnchorMode != value)
+                {
+                    _textAnchorMode = value;
+                    base.NotifyPropertyChanged("AnchorRelative");
+                }
+            }
+        }
+
 		/// <summary>
 		/// Gets or sets the text.
 		/// </summary>
@@ -166,10 +187,25 @@
 		{
 			get
 			{
-				float halfWidth = this.Dimensions.Width / 2F;
-				float halfHeight = this.Dimensions.Height / 2F;
+                float xOffset = 0;
+                float yOffset = 0;
 
-				return RectangleF.FromLTRB(this.Location.X - halfWidth, this.Location.Y - halfHeight, this.Location.X + halfWidth, this.Location.Y + halfHeight);
+                switch (AnchorRelative)
+                {
+                    case TextAnchorMode.TopLeftCorner:
+                        xOffset = this.Dimensions.Width / 2F;
+                        yOffset = this.Dimensions.Height / 2F;
+                        break;
+
+                    case TextAnchorMode.Center:
+                        xOffset = yOffset = 0;
+                        break;
+                }
+				return RectangleF.FromLTRB( this.Location.X - xOffset
+                                          , this.Location.Y - yOffset
+                                          , this.Location.X + this.Dimensions.Width - xOffset
+                                          , this.Location.Y + this.Dimensions.Height - yOffset
+                                          );
 			}
 		}
 
Index: ImageViewer/Graphics/ITextGraphic.cs
===================================================================
--- ImageViewer/Graphics/ITextGraphic.cs	(revision 10063)
+++ ImageViewer/Graphics/ITextGraphic.cs	(working copy)
@@ -33,6 +33,24 @@
 
 namespace ClearCanvas.ImageViewer.Graphics
 {
+    /// <summary>
+    /// This enum set defines the various modes of location that an anchor can take 
+    /// relative to the block of text.
+    /// </summary>
+    public enum TextAnchorMode
+    {
+        /// <summary>
+        /// Identifies the anchor is to be set relative to the center of the text.
+        /// </summary>
+        Center,
+
+        /// <summary>
+        /// Identifies the anchor is to be set relative to the top left corner of the text.
+        /// </summary>
+        TopLeftCorner
+    }
+
+
 	/// <summary>
 	/// Defines an <see cref="IVectorGraphic"/> that contains some dynamic, formattable text content.
 	/// </summary>
@@ -74,5 +92,13 @@
 		/// This property is in either source or destination coordinates depending on the value of <see cref="IGraphic.CoordinateSystem"/>.
 		/// </remarks>
 		PointF Location { get; set; }
+
+        /// <summary>
+        /// Gets or sets the mode for the anchor relative to the text.
+        /// </summary>
+        /// <remarks>
+        /// Default value is Center, to remain consistent with previous behavior.
+        /// </remarks>
+        TextAnchorMode AnchorRelative { get; set; }
 	}
 }
\ No newline at end of file
Index: ImageViewer/InteractiveGraphics/CalloutGraphic.cs
===================================================================
--- ImageViewer/InteractiveGraphics/CalloutGraphic.cs	(revision 10063)
+++ ImageViewer/InteractiveGraphics/CalloutGraphic.cs	(working copy)
@@ -436,6 +436,18 @@
 			get { return this.BoundingBox.Size; }
 		}
 
+        /// <summary>
+        /// Gets or sets the mode for the anchor relative to the text.
+        /// </summary>
+        /// <remarks>
+        /// only the defalt value, Center, is supported by this object.</remarks>
+        public TextAnchorMode AnchorRelative
+        {
+            get { return TextAnchorMode.Center; }
+            set { throw new NotSupportedException(); }
+        }
+
+
 		#endregion
 	}
 }
\ No newline at end of file
Index: ImageViewer/InteractiveGraphics/TextEditControlGraphic.cs
===================================================================
--- ImageViewer/InteractiveGraphics/TextEditControlGraphic.cs	(revision 10063)
+++ ImageViewer/InteractiveGraphics/TextEditControlGraphic.cs	(working copy)
@@ -275,6 +275,16 @@
 			set { this.Subject.LineStyle = value; }
 		}
 
+
+        /// <summary>
+        /// Gets or sets the mode for the anchor relative to the text.
+        /// </summary>
+        public TextAnchorMode AnchorRelative
+        {
+            get { return this.Subject.AnchorRelative; }
+            set { this.Subject.AnchorRelative = value; }
+        }
+
 		#endregion
 
 		#region IMemorable Members