Patients with traditional pacemakers face a number of dangers from magnetic resonance imaging, which uses strong magnetic fields to create detailed images of internal organs. Here are the problems the Medtronic pacemaker is designed to overcome.

Rock Bridge girls basketball player Carmen Boessen vs. Jefferson City [Photo]

Rock Bridge's Carmen Boessen jumps up for two points against Jefferson City at the Class 5 District 9 championship on Friday.

Rock Bridge boys basketball player Travis Jorgenson vs. Jefferson City [Photo]

Rock Bridge High School's Travis Jorgenson runs for a lay up against the Jefferson City Jays at the Class 5 District 9 Basketball Championship in Jefferson City.

MU gymnasts talk with coach Rob Drass vs. Southern Utah [Photo]

Missouri gymnastics coach Rob Drass prepares freshman gymnast Katelyn Trevino, right, for her uneven parallel bars routine as freshman gymnast Taylor Medrea listens in. Trevino's score was 9.750 and received third place.

MU gymnast Cathryn Aliceaacosta vs. Southern Utah [Photo]

Missouri freshman gymnast Cathryn Aliceaacosta jumps and poses during her balance beam routine against Southern Utah on Friday. Aliceaacosta's score was 9.675. MU won with a score of 194.925 to 193.750.

'China Night' at a glance [Slideshow]

Columbia residents celebrated the Chinese New Year at Jesse Hall with the fifth-annual "China Night." A brief slide show highlights events that brought in the Year of the Rabbit.

Answering forum questions [Photo]

Fifth Ward candidate Helen Anthony answers a question Friday at the Muleskinner City Council Candidate Forum in Stamper Commons at Stephens College. Anthony considers herself the candidate with the planning and zoning experience that she believes is essential to have on the council.

Candidates listen to one another [Photo]

Fifth Ward candidate Helen Anthony listens to Firth Ward candidate Glen Ehrhardt answer a question Friday at the Muleskinner City Council Candidate Forum in Stamper Commons at Stephens College. First Ward candidate Darrell Foster was the only one not in attendance.

Time marker at Muleskinner forum [Photo]

Timekeeper Diane Booth holds up a sign to remind Fifth Ward candidate Glen Ehrhardt that he has 15 seconds left to answer a question. The Muleskinner City Council Candidate Forum was held Friday in Stamper Commons at Stephens College. Ehrhardt has lived in Columbia for 30 years and believes it is important to have a historical perspective in promoting modern change.

Protesters gather to oppose Libyan conflict [Photo]

A group of protesters stands on the corner of Providence Road and Broadway on Friday promoting their opposition to the conflict in Libya. Groups of protesters gathered on all four corners of the intersection.

Man waves 1951 Libyan flag [Photo]

Ali Khenissi holds up a 1951 Libyan flag among other protesters on the corner of Providence Road and Broadway on Friday.

Praying for protection of Libyans [Photo]

Mustafa Sawanis (center), a member of the Islamic Center of Central Missouri, leads protesters in prayer, asking God to protect the people of Libya. Members from the Islamic center marched from the center to the corner of Broadway and Providence Road after Friday prayer. The group repeated part of the route taken Wednesday to include more of the community who couldn't attend the Wednesday demonstration, which was planned on short notice. Osama El-Tayash said the group would meet again next Friday if Moammar Gadhafi is still in power. "If he's still there, we will be here," he said.

SLIDESHOW: Wintry weather returns to Columbia [Slideshow]

Images from around Columbia show winter's impact on the landscape.

Snowfall makes the record books [Graphic]

Graffiti removal in Hitt Street Garage [Photo]

MU Campus Facilities worker Christopher Fields works during the removal of graffiti on the fourth floor of the Hitt Street Parking Garage on Friday. Fields said Campus Facilities has noticed an increase in graffiti vandalism across campus during the month of February.

Worker removes parking garage vandalism [Photo]

Christopher Fields, of MU Campus Facilities, uses a power washer to remove graffiti from a wall on the fourth floor of the Hitt Street Parking Garage on Friday. Fields said the vandalism was suspected to have taken place on Tuesday night or early Wednesday morning.

Parking garage vandalism removed [Photo]

Lettering sprayed on the wall of the HItt Street Parking Garage is removed with a chemical applied by Campus Facilities workers Friday. Although the vandalism was believed to occur Tuesday night or early Wednesday morning, workers were unable to get to the project until Friday because they had to gain access to equipment.

Columbia Public Schools stop classes on Friday [Photo]

A snowfall that hit Columbia Thursday afternoon left Columbia Public Schools with an unexpected snow day and Friday out of class.

Snow in Stephens Lake Park [Photo]

A snow-covered Stephens Lake Park remains untouched by park goers early Friday morning.

Barn in snow [Photo]

A red barn stands out against a snowy backdrop. A snow storm hit Columbia on Thursday afternoon and it continued until Friday afternoon.