In Images: A 3D Printed Liver

Safer surgery?

liver printed

(Image credit: Cleveland Clinic)

A new method of 3D printing an anatomically accurate replica of the human liver is now helping to guide surgeons during tricky procedures, researchers report.The 3D-printed models of the human liver are made of transparent material that is threaded with colored arteries and veins. These livers could help surgeons prevent complications when performing liver transplants, or removing cancerous tumors, researchers said.

Anatomically accurate

3d liver

(Image credit: Cleveland Clinic)

The 3D model organs are an improvement over 2D images, which don't provide true visual guidance during surgery, the researchers said. For example, there are three main veins in the liver, and doctors often go into surgery unsure exactly where these blood vessels are located. Inadvertently cutting them can have severe effects on patients' health.

Artificial liver

a 3d printed liver

(Image credit: Cleveland Clinic)

The team first prints the liver out of a clear polymer, then uses dyes to color blood vessels and bile ducts.

Other medical applications

3d printed heart layer

(Image credit: Rogers et al )

The use of 3d printing in medical applications has exploded in recent years. A 2014 Nature Communications article reported on a 3d printed 'jacket' for the outer layer of the heart, which came complete with embedded sensors to monitor heart health.

Printed stem cells

(Image credit: M. Nakamura, Bioprinting Project, Kanagawa Academy of Science and Technology)

Researchers have also used a 3D printer to create human embryonic stem cells.

Printable skin

An article published September 2010 in the journal Tissue Engineering Part C: Methods reported on 3D printed skin.

3D Skull

3D printed skull

(Image credit: © The University of Nottingham)

The technique has also been used to print bone cells into a scaffold shaped like a human skull.