An effective approach for CT lung segmentation using mask region-based convolutional neural networks.

Computer vision systems have numerous tools to assist in various medical fields, notably in image diagnosis. Computed tomography (CT) is the principal imaging method used to assist in the diagnosis of diseases such as bone fractures, lung cancer, heart disease, and emphysema, among others. Lung cancer is one of the four main causes of death in the world.

Adjuvant radiotherapy versus observation alone, after radical prostatectomy in high risk prostate cancer.

Objectives: the authors compared biochemical and clinical outcomes of patients with resected high-risk prostate cancer, managed with adjuvant radiotherapy or observation alone.

Methods: patients treated with radical prostatectomy (RP) between January 1995 and December 2005 at the authors' department were evaluated. Patients with pT3, with or without positive surgical margins (PSM), were included for analysis.

The NF kappa B-mediated control of RS and JNK signaling in vitamin A-treated cells: duration of JNK-AP-1 pathway activation may determine cell death or proliferation.

Nuclear factor kappa B (NFkappaB) has emerged as a crucial regulator of cell survival, playing important functions in cellular resistance to oxidants and chemotherapeutic agents. Recent studies showed that NFkappaB mediates cell survival through suppression of the accumulation of reactive species (RS) and a control of sustained activation of the Jun-N-terminal kinase (JNK) cascade. This work was undertaken in order to evaluate the role of NFkappaB in modulating the pro-oxidant effects of supplementation with vitamin A (retinol, ROH) in Sertoli cells, a major ROH physiological target.

Plasma oxidative parameters and mortality in patients with severe burn injury.

Objective: To determine xanthine oxidase and superoxide dismutase activities, lipid peroxidation, protein carbonylation, and total radical-trapping antioxidant parameter in survivors and nonsurvivors patients with severe burn injury.

Design And Setting: Prospective, comparative observational study in an intensive care unit, burn division, in a trauma hospital.

Patients: Twenty-five consecutive patients who met the established criteria for severe burn injury (total burn surface area of more than 30%).