Publications by authors named "Ryutarou Ukisu"

Eisenmenger syndrome refers to the elevation of pulmonary arterial pressure to the systemic level caused by an increased pulmonary vascular resistance with right-to-left shunt through an intracardiac or aortopulmonary communication. A 36-year-old woman with Eisenmenger syndrome due to patent ductus arteriosus underwent Tc-MAA lung perfusion scintigraphy to evaluate right-to-left shunt. Whole-body imaging visualized extrapulmonary activity in both kidneys, spleen, and intestinal tract, confirming the presence of right-to-left shunt.

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Objective: Fluoroscopically guided interventional procedures are performed in cardiology, and complex interventions are performed in cerebral as well as peripheral circulation. These procedures sometimes deliver a high radiation dose to the patient's skin and can cause serious skin injuries.

Conclusion: Interventionalists are often unaware of the high radiation doses to which a patient's skin may be subjected.

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Creutzfeldt-Jakob disease causes progressive dementia and, eventually, death. The infectious agent is thought to be proteinaceous scrapie particles. Prompt diagnosis is essential to prevent human-to-human transmission.

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Objective: The objective of our study was to evaluate the clinical usefulness of MRI findings, including diffusion-weighted imaging, in relation to the clinical signs and symptoms of Creutzfeldt-Jakob disease (CJD).

Materials And Methods: We reviewed nine cases of CJD in which MRI was performed from the early to terminal phase of the disease. MRI findings were correlated before (early phase) and after (intermediate phase) the onset of the characteristic clinical findings of myoclonus and periodic synchronous discharges on electroencephalograms.

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