Since 1977, Kathy Gill has been extensively involved in sonography on a local, regional, and national level. Her experience includes holding several supervisory positions, commercial applications, development of private ultrasound laboratories, owner and operator of a mobile service, as well as, Program Director of three sonography training programs.

She participates in key professional organizations such as the Society of Diagnostic Medical Sonographers and the American Institute of Ultrasound in Medicine by responding to requests to speak, write, and serve on various committees.

To her credit, Kathy has two Ultrasound textbooks titled Abdominal Ultrasound: a Practitioner’s Guide and OB/GYN Sonography Review and has three more texts as works in progress. As she draws from several areas of expertise, Kathy’s teaching style focuses on the practical approach while still maintaining the ideals of the profession.

She received her Bachelors of Science and Masters of Science degrees from the University of St. Francis in Joliet, IL and she is ARDMS registered in Abdomen, OB/GYN, and Breast specialties. As an active sonographer practitioner, she can relate to sonographers on a working, as well as, a theoretical level.


Dr. Maresca is a board-certified radiologist practicing in several states. His practice covers over 20 service points. He received his M.D. in 1987 from the University of Maryland. He completed his radiology residency at SUNY Medical Center in Syracuse, New York.

Upon completion of his residency, he established a network to service smaller hospitals in New York and surrounding states. He used the technological advances to link the practices and was able to bring high quality and sophisticated studies to previously ignored areas. This network has grown and the growth has enabled the group to offer radiological services to a large population.

The group continues to incorporate new modalities and new sites.

Dr. Maresca is the founder and president of St. Lawrence Radiology, Chief of Staff at Canton-Potsdam Hospital, President of the New York State Medical Society-St. Lawrence County Chapter.


Melinda Freeman started her career in Radiology Technology in 1992 with an A.A.S. in Radiology Technology. The hospital she was employed with sent her through the 3-week cross-training program at the Institute of Ultrasound Diagnostics in Mobile, AL in 1996. Since that time she has become registered with the ARDMS holding credentials in Abdomen, OB/Gyn, Breast and Registered Vascular Technologist (RVT). Melinda has an extensive background as a locum tenens in both General and Vascular Ultrasound.

She has experience with training sonographer’s and physicians on-site at various clinical settings including universities, private clinics, and hospitals. She has served as Assistant Clinical Director and Instructor for the Institute of Ultrasound prior to her current role as Clinical Director. Melinda believes the active learning environment is imperative to prepare a student for their role in Sonography. Her teaching style reflects her expertise and love for sonography and medicine in general.