Create a container for your text content, a span perhaps.
#column-content {
display: inline-block;
}
img {
vertical-align: middle;
}
span {
display: inline-block;
vertical-align: middle;
}
/* for visual purposes */
#column-content {
border: 1px solid red;
position: relative;
}
<div id="column-content">
<img src="http://i.imgur.com/WxW4B.png">
<span><strong>1234</strong>
yet another text content that should be centered vertically</span>
</div>
