Crystal Report Viewer - how to disable dynamicimage caching on IE browser

On the Criminal History Reports, the POI images are retrieved from the Crystal Server via the following URL:

E.g.

https://localhost:8443/BOE/OpenDocument/1306050919/CrystalReports/CrystalReportViewerHandler?dynamicimage=crystal13945123295996257320411644557009.png

The Crystal Report Image Handler added a cache-control header to the image response:

Cache-Control: public, max-age=15552000

As a result, the POI images are cached in the Temporary Internet Files folder by the IE browser.

For security reason the POI images should not be cached and we have implemented a servlet filter to set the cache-control header to no-cache for all responses from /BOE.

However the no-cache cache-control header could be not be added to the POI images.

Can the caching feature be turned off for the Crystal Report Viewer dynamicimage requests?

Where is the configuration file to control it?