RT Journal Article SR Electronic T1 Techniques and Errors in Scintigraphic Measurements of Gastric Emptying JF Journal of Nuclear Medicine JO J Nucl Med FD Society of Nuclear Medicine SP 256 OP 261 VO 19 IS 3 A1 Peter Tothill A1 Gerard P. McLoughlin A1 Robert C. Heading YR 1978 UL http://jnm.snmjournals.org/content/19/3/256.abstract AB