Novel spirometry based on optical surface imaging

• Published in: Medical physics (Lancaster) Vol. 42; no. 4; pp. 1690 - 1697
• Main Authors: Li, Guang, Huang, Hailiang, Wei, Jie, Li, Diana G., Chen, Qing, Gaebler, Carl P., Sullivan, James, Zatcky, Joan, Rimner, Andreas, Mechalakos, James
• Format: Journal Article
• Language: English
• Published: United States American Association of Physicists in Medicine 01.04.2015
• Subjects: 60 APPLIED LIFE SCIENCES; ABDOMEN; Abdomen - physiology; ACCURACY; Biological material, e.g. blood, urine; Haemocytometers; biomedical optical imaging; breathing tidal volume; Cancer; CHEST; Computed tomography; Computerised tomographs; computerised tomography; COMPUTERIZED TOMOGRAPHY; Digital computing or data processing equipment or methods, specially adapted for specific applications; Feasibility Studies; GEOMETRY; Humans; Image data processing or generation, in general; image reconstruction; Measuring length, thickness or similar linear dimensions; Measuring angles; Measuring areas; Measuring irregularities of surfaces or contours; Measuring volume, volume flow, mass flow, or liquid level; Metering by volume; medical image processing; Medical image reconstruction; Medical Physics Letter; Models, Biological; Optical Imaging - instrumentation; Optical Imaging - methods; optical surface imaging; Pattern Recognition, Automated - methods; PHANTOMS; Phantoms, Imaging; Pneumodyamics, respiration; pneumodynamics; Probability theory, stochastic processes, and statistics; radiation therapy; RADIOLOGY AND NUCLEAR MEDICINE; RADIOTHERAPY; Reconstruction; regression analysis; RESPIRATION; respiratory motion; Software; Spatial dimensions (e.g., position, lengths, volume, angles, and displacements); Spirometry - instrumentation; Spirometry - methods; Surface dynamics; Surface optics; Surface reconstruction; Thorax - physiology; Tidal Volume; Tissues; Tomography, X-Ray Computed; Visual imaging; volume measurement

Purpose: To evaluate the feasibility of using optical surface imaging (OSI) to measure the dynamic tidal volume (TV) of the human torso during free breathing. Methods: We performed experiments to measure volume or volume change in geometric and deformable phantoms as well as human subjects using OSI...