[Standardization of gastric emptying scintigraphy with egg white labeled with 99mTc-sulfur colloid].
BACKGROUND
Gastric emptying scintigraphy has become the gold standard, by excellence, in gastric emptying studies. This method must be standardized for the correct interpretation of results. The ideal protocol must be performed with an egg sandwich or egg white poder, both labeled with 99mTc sulphur colloid. The aim of this study was to standardize and determine the protocol with99m Tc sulphur colloid incorporated in egg white and compare it with a hamburger labeled with 99mTc sulphur colloid as well.


METHODS
We studied 30 patients who underwent gastric emptying scintigraphy with the two aforementioned meals.


RESULTS
Emptying percentages and retention with both meals were similar within an hour and two; however, statistical significance arose until the third hour with a p value of 0.26 by using Student's t for independent samples.


CONCLUSIONS
Gastric emptying studies in both protocols where similar with normal ranges. The egg white ingested must be consistent for reproducible results in gastric motility disease, like organoleptic and volume characteristics.
Servicio de Medicina Nuclear, Hospital de Especialidades, Centro Médico Nacional Siglo XXI, Instituto Mexicano del Seguro Social, Ciudad de México, México. andaluzkeden@hotmail.com.
Keren
K
Contreras-Contreras
Rosa María
RM
Villanueva-Pérez
Diana Graciela
DG
Menez-Díaz
Laura Elena
LE
Iwasaki-Otake
Jorge Iván
JI
González-Díaz
Raúl Guillermo
RG
Mendoza-Vásquez
D000328:Adult; D004529:Egg White; D005260:Female; D005746:Gastric Emptying; D018589:Gastroparesis / Q000000981:diagnostic imaging*; D006801:Humans; D008297:Male; D008875:Middle Aged; D011877:Radionuclide Imaging / Q000379:methods / Q000592:standards; D019275:Radiopharmaceuticals; D000069466:Red Meat; D012016:Reference Values; D013671:Technetium Tc 99m Sulfur Colloid
D019275:Radiopharmaceuticals; D013671:Technetium Tc 99m Sulfur Colloid
Gastric emptying; Technetium 99mTc aggregated albumin ; Technetium 99mTc sulfur colloid