/**
 * This module is responsible for drawing invalidated enabled elements
 */

(function ($, cornerstone) {

    "use strict";

    /**
     * Draws all invalidated enabled elements and clears the invalid flag after drawing it
     */
    function drawInvalidated()
    {
        var enabledElements = cornerstone.getEnabledElements();
        for(var i=0;i < enabledElements.length; i++) {
            var ee = enabledElements[i];
            if(ee.invalid === true) {
                cornerstone.drawImage(ee);
            }
        }
    }

    // Module exports
    cornerstone.drawInvalidated = drawInvalidated;
}($, cornerstone));
@@ -504,16 +504,22 @@
 Image(ee
+, true
 );%0A     
@@ -636,8 +636,9 @@
 stone));
+%0A

Fix #82: drawInvalidated() should pass true