Currently, the conservation department serves the needs of the museum through the expertise of specialists in paintings, textiles, works on paper, frames, and objects conservation.[91] The department has grown in both size and staff throughout the years, with the most recent expansion occurring in 2007.[92][5] As of 2007, the IMA owned one of the few computer-based X-ray units in the United States, continuing a trend in X-ray technology that the department began in the 1970s.[4] In 1980, the department helped organize and establish the Midwest Regional Conservation Guild, which includes conservators and conservation scientists from Indiana, Ohio, Illinois, and Michigan.[93] In the mid-1980s, the department received attention when head conservator Martin Radecki assisted local authorities in uncovering over two dozen forged T.C. Steele and William Forsythe paintings worth more than $200,000.[94] The high-profile forgery case led Radecki to organize an exhibit in 1989, Is it Genuine?