Background Intraoperative magnetic resonance imaging （iMRI） dates back to the 1990s and has been successfully applied in neurosurgery but they were low-field iMRI （〈1.0T）. This paper reports the clinical experience with a 3T iMRI-integrated neurosurgical suite in Huashan Hospital, Shanghai, China. Methods From September 2010 through March 2012, 373 consecutive patients underwent neurological surgery under guidance with 3T iMRI. A retrospective analysis was conducted regarding clinical efficiency. Results All surgery in the 373 patients was safe. The ratio of gross total resection for cerebral gliomas （n=161） was increased from 55.90% to 87.58%. The ratio of benefit in extent of resection was 39.13%. One hundred and fifty eight of the 161 glioma patients accomplished follow-up at 3 months postoperatively. Twenty of 161 patients （12.42%） suffered from early motor deficit after surgery. Late motor deficit was however observed in five of 158 patients （3.16%）. Twenty-one of 161 patients （13.04%） had early speech deficit and late speech deficit was only observed in six of 158 patients （3.80%）. The ratio of gross total resection for pituitary adenomas （n=49） was increased from 77.55% to 85.71%. The ratio of benefit in extent of resection was 10.2%. There were no iMRI-related adverse events even for patients who underwent awake craniotomy. Conclusion The 3T iMRI integrated neurosurgical suite provides high-quality intraoperative structural and functional imaging for real-time tumor resection control and accurate functional preservation, resulting in an improvement in maximal safe brain surgery.
QIU Tian-ming YAO Cheng-jun WU Jin-song PAN Zhi-guang ZHUANG Dong-xiao XU Gen ZHU Feng-ping LU Jun-feng GONG Xiu ZHANG Jie YANG Zhong SHI Jian-bin HUANG Feng-ping MAO Ying ZHOU Liang-fu
[Objective] This study aimed to analyze the sustainability of cropland use in cropping-pastoral ecotone before and after the Grain-for-Green Policy. [Method] Using Yanchi County in Ningxia Hui Autonomous Region as a case study area, this investigation used the annual transfer rate of land use types, cropland suitability and emergy analysis to examine the major pressures affecting the sustainable use of cropland before and after the Grain-for-Green Policy. [Result] The expansion of con- struction land onto cropland was significant; the annual cropland area was still larger than the land area suitable for cropping after the policy; agrochemical inputs used for crop production gradually increased and unit crop outputs required more agro- chemical inputs. Cropland use sustainability showed a fluctuating downward trend. [Conclusion] The results imply that the protection of high quality cropland, further im- plementation of the policy and control of agrochemical inputs according to precipita- tion are the main measures needed for sustainable cropland use in cropping-pastoral ecotone.
Objective To review the history, development, and reality of neuronavigation surgery in China and to discuss the future of neuronavigation surgery. Data sources PubMed, the China Knowledge Resource Integrated Database, and the VIP Database for Chinese Technical Periodicals were searched for papers published from 1995 to the present with the key words ＂neuronavigation,＂ ＂functional navigation,＂ ＂image-guided,＂ and ＂stereotaxy.＂ Articles were reviewed for additional citations, and some information was gathered from Web searches. Study selection Articles related to neuronavigation surgery in China were selected, with special attention to application to brain tumors. Results Since the introduction of neurosurgical navigation to China in 1997, this core technique in minimally invasive neurosurgery has seen rapid development. This development has ranged from brain structural localization to functional brain mapping, from static digital models of the brain to dynamic brain-shift compensation models, and from preoperative image-guided surgery to intraoperative real-time image-guided surgery, and from application of imported equipment and technology to use of equipment and technology that possess Chinese independent intellectual property rights. Conclusions The development and application of neuronavigation techniques have made neurological surgeries in China more safe, precise and effective, and less invasive, and promoted the quality of Chinese neurosurgical practice to the rank of the most advance and excellence in the world.
