Risk stratification and prognostic value of multi-modal MRI-based radiomics for extranodal nasal-type NK/T-cell lymphoma.

Background: Magnetic resonance imaging (MRI) performs well in the locoregional assessment of extranodal nasal-type NK/T-cell lymphoma (ENKTCL). It's important to assess the value of multi-modal MRI-based radiomics for estimating overall survival (OS) in patients with ENKTCL.

Methods: Patients with ENKTCL in a prospectively cohort were systemically reviewed and all the pretreatment MRI were acquisitioned.

Prediction of adaptive strategies based on deformation vector field features for MR-guided adaptive radiotherapy of prostate cancer.

Background: The selection of adaptive strategies in MR-guided adaptive radiotherapy (MRgART) usually relies on subjective review of anatomical changes. However, this kind of review may lead to improper selection of adaptive strategy for some fractions.

Purpose: The purpose of this study was to develop prediction models based on deformation vector field (DVF) features for automatic and accurate strategy selection, using prostate cancer as an example.

Effects of gross tumor volume and radiation dose on survival and locoregional recurrence in early-stage extranodal NK/T-cell lymphoma treated with intensity-modulated radiation therapy.

Purpose: To investigate the prognostic value of gross tumor volume (GTV) in early-stage extranodal NK/T-cell lymphoma (ENKTCL) treated with intensity-modulated radiation therapy (IMRT) and explore the interactive effect of GTV and radiotherapy (RT) dose on locoregional recurrence (LRR).

Methods: The data of 319 early-stage ENKTCL patients who underwent IMRT were reviewed retrospectively. Overall survival (OS), progression-free survival (PFS), and locoregional control (LRC) were estimated using Kaplan-Meier method and compared using the log-rank test.

The status of medical physics in radiotherapy in China.

Purpose: To present an overview of the status of medical physics in radiotherapy in China, including facilities and devices, occupation, education, research, etc. MATERIALS AND METHODS: The information about medical physics in clinics was obtained from the 9-th nationwide survey conducted by the China Society for Radiation Oncology in 2019. The data of medical physics in education and research was collected from the publications of the official and professional organizations.

Bioinspired Cooperative Photobiocatalytic Regeneration of Oxidized Nicotinamide Cofactors for Catalytic Oxidations.

Invited for this month's cover is the group of Ning Li at South China University of Technology. The image shows an efficient photobiocatalytic system to regenerate oxidized nicotinamide cofactors for dehydrogenase-mediated oxidations. The Communication itself is available at 10.

Bioinspired Cooperative Photobiocatalytic Regeneration of Oxidized Nicotinamide Cofactors for Catalytic Oxidations.

Inspired by water-forming NAD(P)H oxidases, a cooperative photobiocatalytic system has been designed to aerobically regenerate the oxidized nicotinamide cofactors. Photocatalysts enable NAD(P)H oxidation with O under visible-light irradiation, producing H O as a byproduct, which is subsequently used as an oxidant by the horseradish peroxidase mediator system (PMS) to oxidize NAD(P)H. The photobiocatalytic system shows a turnover frequency of 8800 min in the oxidation of NAD(P)H.

Association of progression-free or event-free survival with overall survival in diffuse large B-cell lymphoma after immunochemotherapy: a systematic review.

To investigate progression-free survival (PFS) and event-free survival (EFS) as early efficacy endpoints in diffuse large B-cell lymphoma (DLBCL), this systematic review included phase III randomized controlled trials (RCTs), phase II trials, and retrospective studies in newly diagnosed DLBCL receiving rituximab-containing chemotherapy through databases search up to 2019. Quality control was performed, where studies with high risk of bias were excluded. Prediction models were first established using the RCTs, and then externally validated in the phase II and retrospective populations.

Prognostic value of preoperative serum bilirubin levels in ovarian cancer.

Bilirubin is a promising prognostic factor for non-liver disease-related deaths in various cancers. We investigated the association between preoperative serum bilirubin levels and oncological outcomes in patients with ovarian cancer. We retrospectively analyzed the clinical data of 282 patients with epithelial ovarian carcinoma (EOC), and grouped them according to optimal threshold values of total bilirubin (TBIL), direct bilirubin (DBIL), and indirect bilirubin (IBL) measured by receiver operating characteristic curve analysis.

[Progress of research on biologically invasive medical molluscs in China].

Invasion of alien species has increasingly become a major environmental problem that damages human health, economic development and ecological security in China, which has been paid much attention. Until now, there have been 753 invasive species reported in China, and invasive medical molluscs include and . This review summarizes the status of biologically invasive species in China, describes the species and distribution of invasive medical molluscs, analyzes the damages of the invasive medical molluscs-transmitted diseases, and proposes the preventive and control measures.

[Study on biological characteristics: reproduction and viability of as an intermediate host of ].

Objective: To compare the difference of fertility of snails between self-fertilization and cross-fertilization and to observe the circadian rhythm of laying eggs, the effect of light on laying eggs and the tolerance of the snail to water and food deficiency, so as to provide the evidence for control and elimination of snails in the field.

Methods: Under laboratory conditions, a single egg for self-fertilization was separated and hatched individually, and young snails were raised in different plastic boxes individually. The eggs for cross-fertilization were hatched and the young snails were fed in the same plastic box.

Cerebral functional abnormalities in patients with nasopharyngeal carcinoma after radiotherapy: an observational magnetic resonance resting-state study.

Background: Nasopharyngeal carcinoma (NPC) is sensitive to radiotherapy (RT). However, neurocognitive complications such as memory loss and learning and attention deficits emerge in the survivors of NPC who received RT. It remains unclear how radiation affects patient brain function.

[A path analysis on China's participation in global health governance: a case study of China Aid of Schistosomiasis Control in Zanzibar].

Recently, China's participation in global health governance has been paid increasing global attention. This paper analyzed the current status and needs of African schistosomiasis control, the participation of China and international organizations in African schistosomiasis control and the progress of China Aid of Schistosomiasis Control in Zanzibar, with China Aid of Schistosomiasis Control in Zanzibar as an example. It is suggested that China may improve the capability of participation in global public health governance and international reputation through strengthening intergovernmental and international collaborations, providing successful disease control experiences and products and improving capability and team building.

Efficacy of China-made praziquantel for treatment of Schistosomiasis haematobium in Africa: A randomized controlled trial.

Background: In the roadmap on the neglected tropical diseases (NTD) the World Health Organization (WHO) aims at attaining at least 75% coverage of preventive chemotherapy in pre-school and school-age children by 2020. A randomized controlled trial was used to compare the effectiveness of praziquantel in treating Schistosoma haematobium in Africa using two different sources for the drug, Merck Limited Partnership (KgaA), Germany and Nanjing Pharmaceutical Factory (NPF), China.

Methods: More than 6,000 participants testing positive for S.

A fast optimization approach for treatment planning of volumetric modulated arc therapy.

Background: Volumetric modulated arc therapy (VMAT) is widely used in clinical practice. It not only significantly reduces treatment time, but also produces high-quality treatment plans. Current optimization approaches heavily rely on stochastic algorithms which are time-consuming and less repeatable.

[Studies on resistance of to praziquantel XVII Biological characteristics of praziquantel-resistant isolates of in mice].

Objective: To investigate the biological characteristics of the praziquantel-resistant isolate of in mice, so as to explore the pathogenicity to definitive hosts and transmission intensity of the praziquantel-resistant isolate of .

Methods: Mice were infected with the cercariae released from two praziquantel-resistant isolates and two praziquantel-susceptible isolates of . The mouse- snail-mouse cycle was established and maintained in the laboratory.

[Studies on resistance of to praziquantel XⅥ Biological characteristics of praziquantel-resistant isolates of in snails].

Objective: To investigate the difference of biological characteristics between the praziquantel-resistant and -susceptible isolates of in intermediate host snails.

Methods: Mice were infected with cercariae of praziquantel-resistant and -susceptible isolates of , and the parasite eggs were collected 37 days post-infection to hatch miracidium. Then, the snails were infected with the miracidium of each parasite isolate.

[Advances in researches of biogenic molluscicides].

Biogenic molluscicides refer to the use of plants, animals and micro-organisms or their metabolites, and synthesis biomimetic molluscicides to kill snails. With the rapid development of science and technology, new biogenic molluscicides are continuously emerging and the category also continues to expand. According to the molluscicidal active ingredient and sources, at present, the biogenic molluscicides with in-depth studies include plant-derived molluscicides, micro-organism molluscicides, microbial metabolite molluscicides and animal molluscicides.

Observation of different tumor motion magnitude within liver and estimate of internal motion margins in postoperative patients with hepatocellular carcinoma.

Aims: To assess motion magnitude in different parts of the liver through surgical clips in postoperative patients with hepatocellular carcinoma and to examine the correlation between the clip and diaphragm motion.

Methods: Four-dimensional computed tomography images from 30 liver cancer patients under thermoplastic mask immobilization were selected for this study. Three to seven surgical clips were placed in the resection cavity of each patient.

Integrated Digital Tomosynthesis for patient positioning of image-guided radiation therapy.

Purpose: Digital Tomosynthesis (DTS), originally developed for diagnostic applications, has been recently introduced to image guided radiotherapy (IGRT). Due to limited scan range, DTS was featured by anisotropic spatial resolution. A new approach, integrated DTS (IDTS), was developed to improve image resolution of DTS for patient positioning in IGRT.

[Role of goat in transmission of schistosomiasis japonica III Effect of temperature and humidity on survival of eggs in goat feces and egg survival in natural environments].

Objective: To investigate the survival of Schistosoma japonicum eggs in goat feces in natural marshlands and the factors affecting its survival, so as to provide evidences for understanding of the role of eggs in goat feces in the transmission of schistosomiasis and the development of the interventions pertaining to disease control and elimination.

Methods: The goat animals of schistosomiasis japonica were modeled in laboratory, and the feces of infected goat were collected. In laboratory, the effects of environmental temperature and water content in goat feces on egg hatching were evaluated, and in the field, the effect of duration of goat feces on marshland on egg hatching and the effect of direct sunshine on egg survival were evaluated.

[Role of goat in transmission of schistosomiasis japonica III Development of goat feces collector and optimization of fecal hatching technique].

Objective: To develop a simple, feasible goat feces collector to improve the collection accuracy and integrity of goat fecal samples without pollution, and to modify the miracidium hatching test with a plastic tube to achieve simple, standard and comparative procedures, so as to provide technical support for pathogenic diagnosis and scientific research of goat schistosomiasis japonica.

Methods: According to the body features of goat in marshland regions, a goat fecal collector, which was made of coarse fabric cottons, was devised, which was able to be fixed onto the goat buttocks and avoid urine pollution. Prior to miracidium hatching test, the goat fecal samples were pieced by using a mechanical method instead of the conventional artificial piecing method, and the effect of mechanical piecing treatment on miracidium hatching was evaluated.

[Role of goat in transmission of schistosomiasis japonica III Environmental contamination by goat feces and prediction of environments at high risk of infection].

Objective: To quantitatively estimate the range and area of environmental contamination by the feces of -infected that were freely grazed, so as to provide the theoretical evidence for the scientific assessment of the role of the freely grazed goat in the transmission of schistosomiasis japonica and development of control strategy.

Methods: All the fecal samples excreted by the infected goat at daytime (12 h) were collected by using a self-made goat fecal collector, weighed and counted. The quantity and dispersal of the feces excreted by the freely grazed goat at daytime under a natural condition were investigated, and the walking route and speed of the freely grazed goat at daytime were recorded with a multifunction GPS data logger.

Dosimetric and Clinical Outcomes With Intensity Modulated Radiation Therapy After Chemotherapy for Patients With Early-Stage Diffuse Large B-cell Lymphoma of Waldeyer Ring.

Purpose: To assess the dosimetric benefit, prognosis, and toxicity of intensity modulated radiation therapy (IMRT) for early-stage, diffuse large B-cell lymphoma of Waldeyer ring (WR-DLBCL).

Methods And Materials: Sixty-one patients with early-stage WR-DLBCL who received chemotherapy followed by IMRT were retrospectively reviewed. Dosimetric parameters for the target volume and critical normal structures were evaluated, and survival was calculated.