President Donald Trump underwent an MRI in October to evaluate his cardiovascular and abdominal health, and the resulting images were "perfectly normal," the White House physician said Monday.

The results of Trump's magnetic resonance imaging were released a day after the 79-year-old president told reporters that he had "no idea" which part of his body was scanned, and three days after Minnesota Gov. Tim Walz responded to Trump calling him "seriously r-----ed" by saying, "release the MRI results."

"Has anyone in the history of the world ever had an MRI assigned to them and have no idea what it was for, as he says?" Walz said Sunday on NBC's "Meet the Press."

Trump's physician, Dr. Sean Barbabella, said Monday that the advanced imaging at Walter Reed National Military Medical Center was part of a "comprehensive executive physical, and was ordered because men in his age group "benefit from a thorough evaluation of cardiovascular and abdominal health." 

Barbabella described the imaging as routine and preventative, meant to identify potential issues early and confirm overall function.

Barbabella also said the cardiovascular imaging showed no signs of arterial narrowing, impaired blood flow, or abnormalities in the heart or major vessels.

Barbabella found that the heart chambers were normal in size, the vessel walls appeared smooth and healthy, and there was no indication of inflammation or clotting. The doctor also reported that all major organs appeared healthy and well-perfused, with no acute or chronic concerns detected.

Barbabella described the president's cardiovascular system as being in "excellent health."

The White House did not release images of the tests.

Until Monday, the White House had only described Trump's Walter Reed visit as a "follow-up evaluation" that included "advanced imaging," without saying why the procedure was done.