Method and apparatus for quantifying pharyngeal residue

Details Method and apparatus for quantifying pharyngeal residue Method and apparatus for quantifying pharyngeal residue

2005-06-16

2009-06-30

Le, Long V (Department: 3768)

Surgery

Diagnostic testing

Detecting nuclear, electromagnetic, or ultrasonic radiation

C600S408000, C600S409000, C600S410000, C424S009100, C424S009410

Reexamination Certificate

active

07555329

ABSTRACT:
A method and apparatus for quantifying pharyngeal residue and aspiration of a patient by x-ray imaging of the patient's head and neck to produce a baseline image, applying an initial volume of x-ray opaque solution to a patient by mouth; x-ray imaging the head and neck of the patient having received the solution before and after swallowing to produce respective second and third images; and calculating a ratio of the pharyngeal residue volume to the initial volume to determine the proportion of the swallowed bolus that remain in the pharyngeal recesses; and calculating a ratio of the material entering the trachea to the known initial volume to determine the proportion of the swallowed bolus that has been aspirated; and if the volume of the original bolus is known, calculating the actual volume of the pharyngeal residue and aspiration. The apparatus includes a suitably programmed computer and an x-ray imaging system to collect image data.

REFERENCES:
patent: 5932235 (1999-08-01), Ninomiya et al.
patent: 5976084 (1999-11-01), Tymchuck
patent: 6461589 (2002-10-01), Robbins
patent: 7236820 (2007-06-01), Mabary et al.
patent: 2008/0064990 (2008-03-01), Blanco Guillermo et al.

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