The depleted uranium rounds the U.S. and British forces were believed to have used in the war on Iraq may have subjected parts of the country to heavy radioactive contamination, a visiting U.S.-based doctor of nuclear medicine has warned.

Asaf Durakovic, director of the Uranium Medical Research Center, an independent organization with offices in the United States and Canada, said his research team conducted a three-week field trip to Iraq last month. It collected about 100 samples of substances such as soil, civilian urine and the tissue from the corpses of Iraqi soldiers in 10 cities, including Baghdad, Basra and Najaf.

Durakovic said preliminary tests show that the air, soil and water samples contained "hundreds to thousands of times" the normal levels of radiation. But he must wait another three months before getting the final results, he said.