She had come for a visit to Boston to demonstrate the spot film imaging technique, and she decided to stay at Tufts permanently.
She graduated in 1924, and she completed her residency and training in internal medicine and radiology at the Second Clinic of Charite, affiliated with Friedrich Wilhelm University.
Fluoroscopy was a popular X-ray technique at the time, but the disadvantage to this method was that it did not leave a permanent image on film until Berg's device was introduced.
Ettinger was only going to stay in the United States for six weeks, but she permanently relocated to Boston, joining the faculty of the Tufts University School of Medicine.
[3] Ettinger's introduction of the spot film opened up the possibility of modern gastrointestinal imaging capabilities in the United States.