Safety and 3D Ultrasound. Is 3D ultrasound safe? I asked myself the very same questions when I was first considering starting this business. As a certified doula in my province, I am naturally sceptical of a lot of modern practices and technology, so I did a fair bit of research on the subject, trying to remain as unbiased as I could. The main concerns historically with prenatal ultrasound have been with regards to two physiological effects that have been demonstrated from the procedure. One is from an increase in temperature in the tissues, and the other is from the physiological...