No abstract

Photocatalytic reduction of nitrite ions on silver-doped titania catalysts prepared by photodeposition and chemical reduction methods was investigated. With respect to the Ag/TiO 2 (C) catalyst prepared by the conventional chemical reduction method, the photoinduced synthesized Ag/TiO 2 (P) samples showed a more homogeneous silver morphology and narrow size distribution. For the first time, selective conversion of nitrite ions to nitrogen instead of ammonia was achieved on the Ag/TiO 2 (P) catalysts. A great influence of hole scavengers on the catalytic activity was observed and can be described as follows: H

No abstract

Bone scintigraphy (BS) is one of the most frequently utilized diagnostic techniques in detecting cancer bone metastasis, and it occupies an enormous workload for nuclear medicine physicians. So, we aimed to architecture an automatic image interpreting system to assist physicians for diagnosis. We developed an artificial intelligence (AI) model based on a deep neural network with 12,222 cases of 99mTc-MDP bone scintigraphy and evaluated its diagnostic performance of bone metastasis. This AI model demonstrated considerable diagnostic performance, the areas under the curve (AUC) of receiver operating characteristic (ROC) was 0.988 for breast cancer, 0.955 for prostate cancer, 0.957 for lung cancer, and 0.971 for other cancers. Applying this AI model to a new dataset of 400 BS cases, it represented comparable performance to that of human physicians individually classifying bone metastasis. Further AI-consulted interpretation also improved human diagnostic sensitivity and accuracy. In total, this AI model performed a valuable benefit for nuclear medicine physicians in timely and accurate evaluation of cancer bone metastasis.

No abstract