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Lynne Castleman
Nuclear Medicine Assistant

After a career in the radio and television industry, Lynne turned her lifelong love of horses into a nuclear medicine assistant position with the Imaging Center conducting bone scans for both companion animals and the equine. Lynne is consistent in her ability to produce quality studies to enhance the diagnosis of pathologies and abnormalities in her imaging patients.

Sunni Larue
LVT, Office Assistant

Sunni is a Licensed Veterinary Technician (LVT). She has worked for Animal Imaging since 2009. After earning her LVT at a community college in San Antonio in 2003, she went on to graduate from Texas A&M University in 2008 with her Bachelor’s Degree in Animal Science. Sunni worked as an ICU technician at the Texas A&M Veterinary Teaching Hospital before coming to Animal Imaging. When she’s not at Animal Imaging, she and her husband spend their time raising their 2 boys. Their fur family includes 3 dogs Happy, Sam, and Luka, 2 cats Calli and Mouse, a horse named Jinx, and a small herd of beef cattle.

Pedro Pacheco
Barn Manager, Veterinary Assistant

Pedro has been with working with Dr. Hersman since 1990 and has been the Barn Manager at Animal Imaging since it was opened. Due to Pedro’s gentle demeanor, he is AI’s horse whisperer and one of the biggest assets to the clinic.

Heather Boyd
Veterinary Technician

Heather is a Veterinary Assistant and has worked for Animal Imaging since 2013 helping in every appointment AI has to offer. She is currently working on getting her LVT and worked at a stable in East Plano before coming to AI. Heather has two cats, Scout and Jack, a dog named Ivy, and a horse named Honey Pot. Heather spends most of her time riding her horse and spending time with friends.

Robert Magnus DVM, MBA
General Manager & Chairman of the Board

Dr. Magnus and the Oculus Insights Management Team joined Animal Imaging in 2017 providing strategic, operational, and human resource services to our diagnostic imaging company. Dr. Magnus is an accomplished senior executive and thought leader with over thirty years in the veterinary health care and business consulting industries. He is the founder and past CEO of Wisconsin Equine Clinic & Hospital, a full-service nationally renowned equine referral hospital and ambulatory practice established in 1992. Starting this business as a solo practitioner, he guided the growth of this practice and recently sold his company to focus on special projects in the animal health industry. As managing partner of Oculus Insights ( he brings a great deal of experience and additional resources to Animal Imaging to build on the foundation established by its’ founder, Dr. Jake Hersman, DVM.

Susan Willenbrock
Operations Manager

Susan has been involved in veterinary medicine since 1988, including experience at a large veterinary referral hospital in North Texas. Susan’s role as the office manager at Animal Imaging includes being a liaison between Animal Imaging and referring veterinary clinics. Her knowledge of the companion animal and equine practice is invaluable.

Carie Turner
LVT, Ultrasound Technician

Carie is a Licensed Veterinary Technician (LVT) that has worked for Animal Imaging for many years as the radiologist’s right-hand woman when it comes to ultrasound, nuclear medicine, and fluoroscopy. She graduated from Cedar Valley College in 2002 and worked at an emergency referral center as an internal medicine technician before coming to AI. Carie completed her certificate in Advanced Imaging in 2008. Carie has a large four-legged family including her dogs, Max, Bones and Petrie, her cats’ Tory and Taz, as well as her Irish Sport Horse Liam. Carie spends most of her off time at the barn riding or spending time with family and friends.

Allyson Dinoto
Customer Care

Allyson moved to Texas from North Carolina in the fall of 2017. Before starting her career in the veterinary field as a receptionist in 2013, Allyson worked with children as a Nanny and a pre-school teacher. After living in several states across the country as a child and teenager (including Texas), she was finally able to move back to the place she calls “home”. Allyson and her husband have 4 cats: Zoe, Jack, Bandit, and Piper. In her spare time, Allyson enjoys kayaking, fishing, traveling and spending time with her family, friends and fur babies.

Rachel Helms
Customer Care

Rachel joined the Animal Imaging staff in October of 2018. Before beginning her career in the veterinary field, she attended Midwestern State University in Wichita Falls where she graduated with a degree in English and Public Relations. She is the proud owner of a Black Lab Mix named Bojangles and a Terrier Mix named Quinn. In her spare time, she enjoys spending time with friends and family, baking, and being involved in her church.

Angela Metcalf
LVT, Anesthesia Technician

Angela is a Licensed Veterinary Technician (LVT) and has worked for Animal Imaging since 2013 monitoring anesthesia on all the patients we see that require it. She graduated from Cedar Valley College in 2010 and honed her skills in emergency hospitals before coming to AI. Angela has two dogs, Gio and Grace, and two frisky felines named Aphrodite and Spookie. She has a passion for horses and all that is country and is in the process of building the farm of her dreams. Angela LOVES the outdoors, going outside every chance she gets.

Veterinary Staff

Our Team is made up of the best and brightest doctors and supporting staff in the country. They go above and beyond to provide the best Imaging services in the industry of Veterinary Radiology. Click the button to meet our Veterinary Doctors on staff at Animal Imaging.

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