Breathhold imaging of the upper abdomen using a circular polarized-array coil: comparison with standard body coil imaging

Current studies emphasize the use of array coils to decrease noise and increase the signal-to-noise ratio (SNR) and contrast-to-noise ratio (CNR). We applied Tl-weighted and T2-weighted standard nonbreathhold spin echo (SE) sequences and Tl-weighted FLASH, TurboFLASH, T2-weighted spin-echo time (TSE), and heavily T2-weighted half Fourier acquisition single-shot TSE (HASTE) sequences during breathhold for abdominal imaging in 15 normal volunteers. The breathhold scans were performed using both a standard coil and a circular polarized array coil. We analyzed the signal intensity (SI), SNR, and CNR of abdominal organs in all sequences. SNRs increased in all cases by an overall factor of 3 due to an 8% increase in overall Sis and a 50% decrease in noise when applying the array coil. Although the array-coil FLASH sequence performed at least as well as the respective SE sequence, the SNRs of the array-coil TurboFLASH, TSE breathhold, and HASTE sequences were generally lower. We conclude that array-coil imaging significantly improves fast imaging of the abdomen.     

腹部按摩的机理及技巧

按摩具有治病作用,其治痛和保健功能更加明显。文章介绍了简单、实用、有效的腹部按摩方法,腹部按摩有增强免疫功能、缓解病症、治疗疾病的作用。     

QLQS800-28桥式双斗轮取料机主梁下挠的矫正

针对邯钢原料场桥式双斗轮取料机大梁下挠的问题，采用“加焊法”进行了矫正，并取得了令人满意的效果。     

Preliminary experience with a new double-echo half-Fourier single-shot turbo spin echo acquisition in the characterization of liver lesions

A new double-echo half-Fourier single-shot turbo spin echo technique has been implemented in which two images are obtained per excitation pulse, one with an echo time (TE) of 60 ms and another with a TE of 438 ms. The acquisition window per image is 380 ms and is determined by the echo spacing of 4.3 ms and the echo train length of 88 for images with resolution of 160×256. No breath holding was performed. The aim of the study was to test whether the additional information of the late TE image improves the characterization of liver lesions. Twenty-eight patients with 39 focal liver lesions (9 cysts, 11 hemangiomas, and 19 solid lesions) were imaged with the new technique, and signal intensity (SI) ratios of lesion and liver were obtained. At-test analysis showed that in the TE 60 ms image, SI ratios of cysts and hemangiomas were not significantly different, whereas in the TE 438 ms images the two types of lesions can be classified. Signal intensity ratios of solid lesions were in both images clearly lower than those of cysts and hemangiomas. The technique, therefore, seems a promising and straightforward new tool for the characterization of liver lesions.     

刺绣肚兜的造型艺术元素探究

刺绣肚兜蕴含着丰富的、深刻的艺术审美性和文化精神内涵,本文对刺绣肚兜的图案纹样、色彩、工艺、款式等造型艺术元素进行了探析。刺绣肚兜所蕴含的艺术魅力及民族传统文化,为我们提供了丰富的资源,对现代美学、设计产生深远的影响。     

经腹部联合经阴道超声诊断妇产科急腹症的应用价值研究

目的:探究在妇产科急腹症的诊疗中联合应用经腹部超声和经阴道超声的效果与价值.方法:选择在我院妇产科进行诊疗的急腹症患者作为研究对象,研究活动开展时间为2016年1月至2020年12月,急诊收治总患者人数2116例,患者入院后均接受经腹部超声与经阴道超声检查,以病理检查结果为标准,对比不同超声检查结果与联合检查结果在妇产...     

准噶尔盆地腹部复合圈闭成藏特征研究

准噶尔盆地是一个勘探程度相对较高的盆地,可供勘探的构造圈闭已经越来越少,因此地层岩性圈闭甚至构造岩性复合圈闭就成了油气勘探的主要目标了.对于准噶尔盆地腹部情况更是这样,由于准噶尔盆地腹部构造活动不强烈,构造圈闭相对较少,寻找岩性或构造岩性复合圈闭就显得更加迫切了.根据地震地层学、层序地层学和沉积相分析研究,准噶尔盆地腹部地区主要目的层侏罗系三工河组和八道湾组主要为河流相-三角洲相-半深湖相沉积,储集地层以各类河道砂体、三角洲前缘砂体为主.根据构造演化研究,准噶尔盆地腹部上构造层(侏罗系及上覆地层)主要为向北抬升的单斜层,这样的构造背景正好与各类岩性砂体复合形成复合圈闭.由于侏罗系和白垩系砂体展布复杂,导致工区油水关系复杂,从而使得工区复合成藏非常复杂.      

癌性腹水患者外周血THl、TH2细胞免疫反应状态的研究

目的:研究辅助性T细胞(TH1、TH2)在癌性腹水患者中的作用及临床意义。方法:采用ELISA(酶联免疫吸附法)检测患者外周血和腹水中-干扰素(-INF)、白细胞介素(IL-4)水平,从而判断THl、TH2细胞的活性。结果:癌性腹水患者外周血THl细胞的活性较正常人明显降低,TH2细胞活性明显增强。治疗无效者外周血THl细胞的活性进一步下降,TH2细胞活性进一步增强,而治疗有效者外周血THl细胞功能逐渐增强,TH2细胞功能逐渐下降,其水平均接近于正常对照组。结论:外周血辅助性T细胞(TH1、TH2)的活性对癌性腹水患者的疗效及预后判断具有一定的价值。     

Intestinal Radiation Protection and Mitigation by Second-Generation Probiotic Lactobacillus-reuteri Engineered to Deliver Interleukin-22

(1) Background: The systemic administration of therapeutic agents to the intestine including cytokines, such as Interleukin-22 (IL-22), is compromised by damage to the microvasculature 24 hrs after total body irradiation (TBI). At that time, there is significant death of intestinal microvascular endothelial cells and destruction of the lamina propria, which limits drug delivery through the circulation, thus reducing the capacity of therapeutics to stabilize the numbers of Lgr5+ intestinal crypt stem cells and their progeny, and improve survival. By its direct action on intestinal stem cells and their villus regeneration capacity, IL-22 is both an ionizing irradiation protector and mitigator. (2) Methods: To improve delivery of IL-22 to the irradiated intestine, we gavaged Lactobacillus-reuteri as a platform for the second-generation probiotic Lactobacillus-reuteri-Interleukin-22 (LR-IL-22). (3) Results: There was effective radiation mitigation by gavage of LR-IL-22 at 24 h after intestinal irradiation. Multiple biomarkers of radiation damage to the intestine, immune system and bone marrow were improved by LR-IL-22 compared to the gavage of control LR or intraperitoneal injection of IL-22 protein. (4) Conclusions: Oral administration of LR-IL-22 is an effective protector and mitigator of intestinal irradiation damage.     

珠三角地区成年男性凸腹体型的服装号型配置

依据凸腹体型分类,制定适合珠三角地区成年男性凸腹体型的服装号型配置。采用LatentGOLD5.1软件对珠三角地区119名凸腹成年男性人体测量数据进行潜在剖面分析,使用LatentGOLD5.1软件Step-3模块的BCH校正三步法进行简单效应检验。研究发现:根据凸腹体型分类以及身高、体重和年龄等协变量,可以制定适合珠三角地区成年男性凸腹体型的服装号型配置,其有利于拓广现行服装号型标准中的不足,为珠三角地区凸腹体型男性提供更为适合的标准。