By Leslee Bassman

During the past decade the technology of ultrasound services has expanded to allow for 4-D imaging, said Patti Justice, owner of Blooming Pregnancy Spa and Imaging Center, 5601 Brodie Lane, Ste. 650, Austin.

A 4-D image is a series of still pictures in motion, she said. Since the imaging involves only soundwaves, there is no risk to the mother or child, she said.

Justice said her 4-year-old business only performs physician-approved prenatal scans for elective reasons, and a registered diagnostic medical sonographer, or RDMS, conducts the sonogram.

"[The RDMS designation] is the same gold standard a hospital would require of a technician," said Justice, who also offers prenatal massages at her facility.

Sonographers Nicole and Derwin Volpacchio started Bios 4D Imaging, 325 S. RR 620, Ste. 100B, Lakeway, in 2011 as a portable ultrasound diagnostic service that is able to bring imaging services to patients in medical offices, nursing homes and rehabilitation centers.

Derwin Volpacchio said his company focuses on diagnostic specialties, from determining a patient's artery blockages to whether a baby has a cleft palate.

"We are not for entertainment," he said. "We look at high-risk situations."