Optical imaging instrument for muscle oxygenation based on spatially resolved spectroscopy.
An imaging instrument based on spatially resolved spectroscopy that enables temporal and spatial analyses of muscle oxygenation was designed. The instrument is portable and can be connected to 32 compact and separate-type optical probes. Its measurement accuracy of O(2) saturation and hemoglobin concentration was evaluated using a tissue-equivalent phantom. Imaging and multi-point measurements of tissue oxygen saturation (S(t)O(2)) in the quadriceps muscle were also performed, and dynamic changes in S(t)O(2) in response to increase in exercise intensity (within the rectus femoris region) and variation in exercise protocol (among the rectus femoris, vastus lateralis and vastus medialis) were clearly shown.
Kek
Khai Jun
KJ
Graduate School of Information Science and Technology, Hokkaido University, Sapporo, Japan. kek@bme.ist.hokudai.ac.jp
Kibe
Ryuta
R
Niwayama
Masatsugu
M
Kudo
Nobuki
N
Yamamoto
Katsuyuki
K
D000042:Absorption; D000328:Adult; D006801:Humans; D008297:Male; D009132:Muscles / Q000502:physiology*; D055095:Optics and Photonics / Q000295:instrumentation*; D010100:Oxygen / Q000502:physiology*; D019047:Phantoms, Imaging; D013057:Spectrum Analysis
D010100:Oxygen