Feasibility of Temperature Imaging of Knee Joint Cartilage under Thermal Therapy using Water Proton Resonance Frequency Shift
Atsushi Shiina 1 , Kenji Takahashi 2 , Jiro Nakano 3 , and Kagayaki Kuroda 1
Graduate School of Engineering, Tokai
University, Hiratsuka, Kanagawa, Japan,
of Orthopaedic Surgery, Nippon Medical School, Bunkyo,
of Information Science and Technology, Tokai University,
Hiratsuka, Kanagawa, Japan
Feasibility of MR temperature imaging for joint
cartilage using conventional water proton resonance
frequency technique was demonstrated. Laser heating
experiments with cartilage samples in vitro excised from
porcine knee joints showed clear temperature elevation
images of the thin cartilage region of 1-2 mm thickness.
The temperature coefficient of the water proton
resonance frequency was -0.0108 ppm/degree C. These
results may be a first step to apply the noninvasive
temperature imaging technique for thermally induced
pain-relief for a patient with osteoarthritis.
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