Речь идет об обследовании новорожденного с заболеванием печени методом радиоизотопной гепатографии (она же сцинтиграфия, она же радиоизотопное исследование).

The patient was referred to Dokuz Eylul University Hos pital
for HBS imaging at 3 months of age. The HBS dynamic images
of anterior abdomen were obtained from the 5 h-fasted infant
during 90 min, just after the i.v. administration of 37 MBq 99m Tc-
HIDA. After feeding, a second-hour static image was obtained.
The perfusion and extraction of the tracer from the blood by the
hepatocytes and the excretion of the liver was normal.

Интересует слово H-FASTED. Это что-то связанное с часами (5 hours)??