Can you exclude angle brackets from your wildcards? That should prevent crossing tag boundaries. 
/<img[^<]*WantToGetRidOfThis.gif[^>]*>/

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In reply to Re: Greedy RegExp by Roy Johnson
in thread Greedy RegExp by fourmi

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
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