"Guernica" depicts intense suffering but it's own health is not in danger.

That's the diagnosis after the first X-ray of Pablo Picasso's 20th century anti-war opus carried out by the Reina Sofia art museum.

The X-ray of the large-format canvas _ 11 feet by 25 feet (3.5-meter by 7.8-meter) _ was part of a series of tests begun over a year ago on one of the world's most prized masterpieces.

Guernica's last major analysis a decade ago turned up 129 imperfections _ ranging from cracks to creases to marks and stains _ all attributed to the painting's hectic past.

"The X-ray lets us see in what condition the painting is in, its makeup, the colors and the damage it has suffered," Reina Sofia director Manuel Borja-Villel told The Associated Press in an interview this week.

"The good news is that the latest X-ray results show the imperfections haven't increased," said Borja-Villel. "But age pardons no one, and paintings are no different."

The studies now being pieced together by the museum's specialists aim to produce a definitive analysis of the painting by 2010. So far tests show the painting needs only a periodical dusting and a possible clean-up of some stains resulting from its only previous restoration, done by New York's MOMA in 1957.

"Guernica" was commissioned from Picasso by the Republican government of Spain to represent the country at a Universal Exposition in Paris in 1937 as Spain writhed in a bloody civil war started by future dictator Gen. Francisco Franco.

Once the fair was over, the painting went on the road for nearly 20 years, visiting dozens of cities on both sides of the Atlantic.

'Every time it was moved it had to be taken off its support and rolled up. That took its toll over the years until one day at the beginning of the 1960s Picasso himself said, 'Enough is enough,'" said Borja-Villel. Continued...