Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Measurement of the detectable depth of the PG. (A) When the PG is illuminated with 780 nm NIR light, it emits autofluorescence of wavelength 820–830 nm. The camera detects the emitted light. (B) Detectable depth was measured by a highly experienced surgeon (K.D. Lee) using a Vernier caliper (see arrows). Arrowheads indicate PGs. NIRAF, near-infrared autofluorescence; PGs, parathyroid glands.
