RT Journal Article SR Electronic T1 The RES-O-MAT Effective Thyroxine Ratio Test for the Determination of Neonatal Thyroid Activity JF Journal of Nuclear Medicine Technology JO J. Nucl. Med. Technol. FD Society of Nuclear Medicine SP 144 OP 145 VO 2 IS 4 A1 Gallamore, Gary D. YR 1974 UL http://tech.snmjournals.org/content/2/4/144.abstract AB Today’s nuclear medicine departments are experiencing an ever-increasing demand for diagnostic procedures on pediatric patients. The need for early diagnosis of thyroid dysfunction is universally understood. The RES-O-MAT Effective Thyroxine Ratio (ETR) test has been successfully used on a series of normal newborns in an effort to establish a range of normal values for this in vitro examination.