How to force Sitecore MVC to render height and width attributes on image tag

When using Web forms in sitecore an img tag is rendered with the Height and Width attributes e.g.

<img src="~/media/Images/example.jpg" alt="" width="245" height="245">

When using Sitecore MVC with a view rendering, the tag is rendered as

<img src="/~/media/Images/example.png?h=300&amp;la=en&amp;w=316" alt="">

How can I make Sitecore MVC render the tag with the Width and Height attributes as per web forms?