Any good Radiology site to practice CXR's.

[Nitecap]

Taking a radiology class this block and wanted to know if anyone knew of a website that had interpreted CXR's in good quality that I could practice on. Particulary Pulm and CV pathology and Line placements ect. Have found a few on google images but no real good site. Have a test in 3wks all interpretations and the only way to realy be even half decent is to see a ton of them. Could kick myself for not really examining in detail the coutless CXR's in the ICU. Of course I looked at them and could say, his right lower lobe looks like crap, but as far as determining that one has interstial infiltrates, and small pneumo's, ect. Sometimes I have no idea what they are seeing. An online free tutorial would help a ton.