A high-capacity coverless image steganography method based on double-level index and block matching.

Recently, a new information hiding technology called coverless information steganography (CIS) is proposed, which uses the original natural image as stego image for the transmission of secret information which can resist the detection of image steganalysis algorithm, so it received extensive attention and support. However, it is still a low hidden capacity of the CIS methods up to now. This paper proposes a high-capacity coverless information steganography technology.

[A3-A3 side-to-side anastomosis combined with endovascular intervention in recurrent complex anterior artery aneurysm: a case report and literature review].

A 28-year-old female patient was admitted to the Second Affiliated Hospital, Zhejiang University School of Medicine, with sudden headache and vomiting for 1 day. CT scan conducted at emergency revealed subarachnoid hemorrhage, whereas digital subtraction angiography demonstrated a wide-neck aneurysm located at A1 segment of the left anterior cerebral artery. The aneurysm was totally coiled using stent assistance, which, however, was recanalized at 3 month follow-up.

The feasibility and efficacy of endovascular treatment for very small or tiny ruptured paraclinoid aneurysms.

Introduction: The aim of this study was to evaluate the feasibility of endovascular treatment (EVT) for ruptured very small (≤5 mm) or tiny (≤3 mm) paraclinoid aneurysms of the internal carotid artery (ICA).

Methods: From November 2009 to April 2012, 32 ruptured paraclinoid aneurysms (very small, 23; tiny, 9) in 31 patients received EVT. Angiographic follow-up determined occlusion rates which were classified as total/near-total (95-100 %), subtotal (80-95 %), and partial (<80 %) occlusions.

[Early management of intracranial ruptured vertebral dissecting aneurysms].

Objective: To evaluate the early management of intracranial ruptured vertebral dissecting aneurysms.

Methods: Twenty-two patients with ruptured vertebral dissecting aneurysms were managed by various treatment modalities according to their conditions. One aneurysm was treated by proximal vertebral artery coiling, 15 aneurysms by aneurysm and parent artery coiling, and 5 aneurysms by stent-assisted coiling (4 of 5 by stent-within-a-stent technique), one by single double-stent.

[National surveillance of schistosomiasis in China from 2000 to 2004].

Objective: To specify the trends of endemic situation among twenty one national surveillance sites for schistosomiasis from 2000 to 2004.

Methods: According to the national surveillance protocol, longitudinal surveillance on endemic situation of schistosomiasis was carried out at twenty-one sites since 2000.

Results: The infection rate of Schistosoma japonicum declined in six of the twenty-one surveillance sites.

Surveillance for schistosomiasis japonica in China from 2000 to 2003.

According to the protocol of the national surveillance project, longitudinal observation of the endemic situation of schistosomiasis japonica in China has been carried out at 20 sentinel surveillance sites, commencing in 2000. After four years of surveillance, the infection rate of Schistosoma japonicum gradually decreased in seven sentinel sites. In 10 sites, infection rates remained relatively stable over time, while there was a marked increase in one site.

An economic evaluation of the national schistosomiasis control programme in China from 1992 to 2000.

The World Bank Loan Project, by far the largest effort in China for schistosomiasis control since control activities were initiated in the mid 1950s, was carried out for a 9-year period commencing in 1992 in the 8 provinces where Schistosoma japonicum remained endemic when the project started. To evaluate its impact, a retrospective economic evaluation was done in 2001. Six representative counties, i.

The public health significance and control of schistosomiasis in China--then and now.

The description of schistosomiasis in China dates back more than two millennia. The disease caused social and economic hardship, and the rates of morbidity and mortality were high. In the mid 1950s, when China's population was approximately 600 million, an estimated 11.

[Study on the intention of the administrative model of anti-schistosomiasis institutions at county level].

Objective: To investigate current status of schistosomiasis control system at the county level and make recommendations to improve the infrastructure adapting to the prevalent condition of the disease.

Methods: Through pertinently sampling and semi-quantitative questionnaire among the professional workers, experts and administrators in schistosomiasis control, the primary weaknesses involved in the management system and human resources were analyzed.

Results: 380 questionnaires were distributed, 33 out of 40 were returned from experts/administrators and 285 out of 340 were received from the professionals.

[National surveillance of schistosomiasis from 2000 to 2002].

Objective: To identify the trends of endemic situation at the twenty-one national surveillance sites from 2000 to 2002.

Methods: According to the protocol of the national surveillance system, longitudinal surveillance of endemic situation of schistosomiasis was carried out at the twenty-one surveillance sites since 2000.

Results: Relative indexes of endemic situation of schistosomiasis decreased in two surveillance sites annually.