wpf glow image on mouseover

<Image Source="/WpfApplication1;component/myimage.png">
   <Image.Style>
      <Style TargetType="{x:Type Image}">
         <Style.Triggers>
            <Trigger Property="IsMouseOver" Value="True">
               <Setter Property="Effect">
                  <Setter.Value>
                     <DropShadowEffect ShadowDepth="0" Color="Blue" Opacity="1" BlurRadius="20"/>
                  </Setter.Value>
               </Setter>
            </Trigger>
         </Style.Triggers>
      </Style>
   </Image.Style>
</Image>