Double-Layered Perovskite Oxyfluoride Cathodes with High Capacity Involving O-O Bond Formation for Fluoride-Ion Batteries.

Developing electrochemical high-energy storage systems is of crucial importance toward a green and sustainable energy supply. A promising candidate is fluoride-ion batteries (FIBs), which can deliver a much higher volumetric energy density than lithium-ion batteries. However, typical metal fluoride cathodes with conversion-type reactions cause a low-rate capability.

High resolution CT findings in community-acquired pneumonia.

Purpose: Our goal was to clarify the high resolution CT (HRCT) findings of community-acquired pneumonia based on pathologic findings and to make a differential diagnosis between bacterial and atypical pneumonias.

Method: This study evaluated 32 cases with community-acquired pneumonia, including 18 cases with bacterial pneumonia and 14 cases with atypical pneumonia [mycoplasma pneumonia (n = 12), chlamydia pneumonia (n = 1), and influenza viral pneumonia (n = 1)]. HRCT images in these cases were space consolidation, ground-glass attenuation, thickening of the bronchovascular bundle, and distribution of abnormal attenuation.

[High-resolution MR imaging of the mediastinum and hilus of the lung using surface-coils].

High-resolution MR imaging using surface-coils (Helmholtz-coil) was performed on patients with hilar lung cancer and healthy volunteers. We evaluated the clinical usefulness of this technique compared with MR imaging performed with a conventional body-coil. Although the signal-to-noise ratio was slightly decreased, normal anatomic structures, hilar masses, and enlarged lymph nodes were distinctly visualized in comparison with those on MR images obtained with a body-coil.

Imaging of the portacaval space.

The portacaval space is a relatively narrow region between the portal vein and the inferior vena cava that is usually well seen on cross-sectional abdominal imaging studies [1]. Various structures, including normal anatomic variants and extension of diseases from adjacent organs, can be detected within this space [1-3]. An awareness of the types of normal and abnormal structures can prevent misinterpretation and aid in evaluating the spread of malignant diseases.

[Usefulness of 2D FLASH multislice dynamic MR imaging for evaluation of parametrial invasion in cervical carcinoma].

Twenty seconds and 3 minutes after starting rapid injection of Gd-DTPA, multislice dynamic (MD) images were obtained with the 2 dimension fast low-angle shot (2D FLASH) technique. Four of 5 cervical carcinomas showed high signal intensity in the early dynamic phase (20 seconds), so they were readily distinguished from the myometrium that were not enhanced in the same phase. For evaluation of parametrial invasion, MD study showed better contrast between the tumor and the parametrium than did T2-weighted images because the tumor demonstrated a high signal intensity similar to that of the parameterium on T2-weighted images.