Several readers pointed out significant typographical errors in the August 2005 Newsline news brief titled “NAS Study Maintains LNT Validity” (J Nucl Med. 2005;46[8]:47–48). The Greek letter μ (with the prefix meaning of “micro”) was erroneously substituted for “m” (with the prefix meaning of “milli”). The sentences containing errors should have read: In fact, these and similar statements were based on comments by panel member Ethel Gilbert, a biostatistician at the National Cancer Institute (Bethesda, MD), who summarized the report’s findings at the press conference by saying that the vast majority of Americans will be exposed to total radiation far below what the panel considered a high end for low-dose lifetime exposure (100 mSv), an amount she clarified as “about 1,000 times the dose you receive from a single chest X-ray,” adding that with a cumulative low-dose lifetime exposure of 100 mSv “about 1 person in 100 would develop cancer.” And: “We estimated that whole exposure to a whole-body [CT] scan is about 10 mSv,” said Monson. “That’s a relatively high dose. There’s currently no information on whether there’s an association between exposure to radiation from CT scanning and adverse health effects …but prudence should oversee the operation of the network.”