About Valley Ultrasound

Valley Ultrasound aims to provide a superior and affordable medical ultrasound practice to every patient we see and who, as a result of our service, will want to recommend us to family and friends and to referrers who will prefer to use our service because of our timeliness, reliability, and for the standard of care we provide to their patients.

Sally Agar

Principal Sonographer and Director

Sally holds the Diploma of Medical Ultrasound, which she gained in 1990, while working in Palmerston North Public Hospital. With over 20 years experience, Sally has worked in both the Private and Public sectors, in Palmerston North, Rotorua, and the Hutt Valley. The experience gained from exposure to the diverse nature of each role has enabled her to become a highly skilled Sonographer, proficient in all areas of ultrasound imaging.

Sally has an excellent communication skills and bedside manner which instil confidence and trust in her patients.

Dr. Jaco van der Walt

Jaco received his medical degree 1989 and worked as a GP in South Africa, NZ and Canada before returning to training as a radiologist. He has been a qualified radiologist since 2001 and has worked in this capacity in South Africa, the UK and, for the last decade, in Wellington.

He has a strong interest in ultrasound and ultrasound guided interventions.

Dr. Brett Lyons

Brett graduated from Otago Medical School in 1992 and completed both his Diploma of Obstetrics and Radiology specialist training in 1999.

He worked as a senior clinical lecturer at the University of Otago and soon after become clinical director of radiology at Dunedin Hospital.

In 2011 Brett, his wife Lisa, and their 4 children moved to Auckland and since then he continues to pursue his interests in musculoskeletal imaging and intervention.

Currently he reports for Mercy Radiology as well as providing reporting and intervention to practices in both Australia and New Zealand


Jannine qualified in Ultrasound in 1992. After working for several years overseas, Jannine returned to the Wellington region and has worked in both the public and private sector for many years.

Jannine brings to Valley Ultrasound a wealth of knowledge and experience in the ultrasound field. In her work life Jannine is an accomplished Yoga teacher.

Sally has an excellent communication skills and bedside manner which instil confidence and trust in her patients.

Diana Leonard

Diana is a qualified sonographer from Canada who joined our team a year ago.
She is skilled in a variety of ultrasound examinations including obstetrics, gynaecological general, vascular and cardiac. She has a warm friendly personality and we are thrilled to have her working with us.

She is enjoying our beautiful country and all it has to offer.