Abstract: This disclosure generally relates to an optical coherence tomography (OCT) system. This disclosure particularly relates to an OCT system with a multi-pass dispersion compensation cell incorporated into its reference arm. This disclosure further relates to a hand-held compact OCT system suitable for inspection of an ear of a mammal.

Abstract: A mask for a patient and a method for reducing exposure of aerosol particles emitted from the patient to other individuals. The mask may have an inner chamber configured to enclose a nose and a mouth of the patient. The mask may further have a negative pressure chamber fluidly connected to the inner chamber. The negative pressure chamber may have an outer opening and a suction opening. The outer opening may be covered by a seal. The seal may be configured to be cut or opened to form a device opening providing access to the nose of the patient. The device opening may receive a medical device and form a seal around the medical device. The suction opening may be configured to couple to a suction device for removing the aerosol particles located within the inner chamber and the negative pressure chamber.