Publications by authors named "J KAWAMURA"
Background Children with Down syndrome (DS) often have hypoplastic kidneys and urinary tract malformations that increase their renal dysfunction risk. They also have a higher congenital heart disease (CHD) rate, requiring cardiac surgery during infancy. Renal dysfunction in such patients may be associated with the development of cardiac surgery-associated acute kidney injury (CS-AKI), but this remains unclear.
View Article and Find Full Text PDFWe investigate the THz intersubband absorption behavior of a single 40-nm wide GaAs/AlGaAs square quantum well (QW) using Johnson noise thermometry. In our measurements, the Johnson noise associated with intersubband absorption is measured from the in-plane conduction channel of the QW while its intersubband absorption behavior is being tuned through the independent control of the charge density and the perpendicular DC electric field. Our measurements enable the study of intersubband absorption of a small (∼20,000 and potentially fewer) number of electrons in a single mesoscopic device, as well as direct measurement of the electron heating from intersubband absorption.
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- The study aimed to explore changes in choroidal blood flow (CBF) and choroidal thickness (CT) in eyes with non-ischemic branch retinal vein occlusion (BRVO) after treatment with intravitreal aflibercept injections (IVA).
- Conducted on 20 treatment-naive patients, measurements were taken before and after treatment using laser speckle flowgraphy and optical coherence tomography, revealing significant reductions in CBF and CT at specific times post-treatment.
- The findings suggest that aflibercept injections led to decreases in both CBF and CT, which may correlate with improvements in macular edema among the studied BRVO eyes.
A 59-year-old man presented with abdominal mass and weight loss. Computed tomography revealed a 20 cm mass in the vicinity of the left kidney. A tumor biopsy was performed and diagnosed with leiomyosarcoma.
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- This study assesses how choroidal blood flow (CBF) and choroidal thickness (CT) can predict if macular edema will return in patients with a specific type of eye condition (BRVO) after receiving treatment.
- Sixteen patients were treated with an injection and monitored for changes in CBF and CT over a year using specialized imaging techniques.
- Results showed that thicker CT in affected areas initially dropped after one week, while CBF remained steady; however, an imbalance in CBF was linked to how many injections were later needed, suggesting it could help predict recurrence of macular edema.