Synaptive Medical raised $901,256 (CAD $1.2 million) in a new round of equity financing, according to an SEC filing posted this week.

Synaptive Medical produces the BrightMatter Guide brain imager, which provides 3D visuals of the brain in the operating room, which help guide surgeons as they pursue neurological procedures, Synaptive Medical said. During surgery, the images are placed over an anatomical scan, offering a way to visualize the inside of the brain.

Money in the round came from 6 anonymous sources, according to the SEC filing. The company as not yet stated how it plans to spend funds raised in the round.

The round is only the most recent in a string for the company over the last several months. In November, Synaptive Medical said it received an undisclosed amount through a strategic investment from General Atlantic.

In October, Synaptive said it it raised $3.7 million in an SEC filing it posted in October. Eighteen unnamed investors participated in the round

Last July, the company said it won Health Canada approval for its BrightMatter Guide brain imaging system, which provides 3D visuals of the brain in the operating room to help guide surgeons.

The company has also won a series of regulatory nods in the U.S. last year, beginning with FDA clearance in April to start marketing its 3D brain visualization technology. In May, Synaptive said it won 510(k) clearance from the federal safety watchdog for its ImageDrive Pro informatics system.