Publications by authors named "Ryoya Mizuno"
Conventional light diffusers have periodic surface profiles, periodic refractive index distributions, or light scattering layers containing colloids. In all such structures the optical directivity of the light diffuser is cannot typically be controlled. Here we propose an electrically tunable light diffuser based on the application of ultrasound to a nematic liquid crystal (LC) material.
View Article and Find Full Text PDFObjectives: In Japan, caudal block with 1% lidocaine is commonly used for transrectal prostate biopsy. Although 10 mL of 1% lidocaine is commonly used, the appropriate dosage of 1% lidocaine has not been studied. Our hospital routinely uses two different doses (5 or 10 mL) of 1% lidocaine for caudal block for transrectal prostate biopsy.
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- * An 84-year-old patient with cervical cancer had repeated bladder tamponade episodes treated with blood transfusions, but developed anemia after each discharge, which led to further tamponade recurrence when hemoglobin levels fell below normal.
- * Monitoring and maintaining serum hemoglobin levels within the normal range successfully prevented the recurrence of bladder tamponade for over 27 months in this patient, suggesting that hemoglobin monitoring could be a predictive tool for this condition.
A 74-year-old patient was undergoing treatment for ascending colon cancer (cT4aN2M1a) in the Department of Surgery at our hospital. During treatment for increased lymph node metastasis and spinal metastasis, she complained of numbness in her dorsal thigh. Magnetic resonance imaging showed spinal canal stenosis due to L4 bone metastasis.
View Article and Find Full Text PDFPurpose: To evaluate the utility of vertebral Hounsfield unit (HU) values from computed tomography (CT) in cancer staging as a supplementary screening tool for bone health among prostate cancer (PCa) patients.
Methods: T-scores of bone mineral density (BMD) in each lumbar vertebra (L1-L4) and hip for newly diagnosed PCa patients (N = 139) were measured using dual-energy X-ray absorptiometry (DXA). The degenerative changes in each lumbar vertebra were assessed, and the HU values of trabecular bone in axial CT images of each vertebral body (vertebral CT-HU value) were measured using staging CT.