Background: Computed tomography (CT) can provide critical information for diagnosis and is a prevalent and easy-to-use imaging test, but overtesting becomes a big probleｍ. The previous report showed 30-40% of abdominal CT scans were medically unnecessary. Therefore, head CT is a research topic in overtesting, and clinical predictive scores have been developed to avoid overtesting [...]

Background: In the US, hospitalist system has been introduced with improvement of quality and safety of care, education and value. Japan now face rapidly declining birthrate and aging population. Organ-based subspecialty system has difficulty in managing patients with multiple diseases. Patient-centered general medical care is required for inpatient management. However, in Japan, there are only [...]