Publications by authors named "Tokuzou Yokokawa"

Proton magnetic resonance spectroscopy (H-MRS) has shown inconsistent alterations in the brain metabolites of individuals with chronic pain. We used 3T H-MRS to investigate the brain metabolites in the anterior cingulate cortex and thalamus of 22 patients with chronic mild pain and no gait disturbance and 22 healthy controls. The chronic-pain group included patients with chronic low back pain and/or osteoarthritis but none suffering from hypersensitivity.

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Proton magnetic resonance spectroscopy (H-MRS) has shown inconsistent alterations in brain metabolites of adults with autism spectrum disorder (ASD). We investigated brain metabolites in the medial prefrontal cortex and amygdala of 24 drug-naive adults with ASD and no intellectual disability and 24 non-ASD control subjects, using 3 T H-MRS. Adults with ASD showed no significant differences from control in glutamate, glutamate plus glutamine, N-acetylaspartate, glycerophosphorylcholine plus phosphorylcholine, creatine plus phosphocreatine, or myo-inositol in either region.

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A case in which radiotherapy was requested for bone metastases from prostate carcinoma after hormonal and radiation therapy and diagnosed as insufficiency fracture of the sacrum on bone scan was reported. A 78-year-old man underwent endocrine therapy with luteinizing hormone releasing hormone agonists and radical radiotherapy toward pelvis for prostate cancer. The onset of buttock pain started from the nine-month after the beginning of radiotherapy, and was diagnosed as sacrum metastasis by MRI, and radiotherapy was requested again for pain control.

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In patients with lung cancer of the lower lobes and liver cancer, treatment volume including respiratory motion is an important therapeutic problem. We developed a voluntary breath-hold system using pictures and voice messages so as to reduce the excessive safety margin that covers respiratory motion. The system consists of two sets of monitor and speaker, and a computer and software for control without direct connection to a linear accelerator.

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