Objective To study the prevention and corresponding measures for the allergy of contrast agent in scanning, and discuss the targeted prevention mode.MethodsSelection from June 2015 to August 2016, 400 cases was conducted in the people's hospital of ningbo yinzhou MR enhancement scanning patients as the research object, in the process of the study were randomly divided into control group and experimental group, 200 cases in each group.In the control group, patients were given routine procedure, including psychological counseling, diet control and health, education, etc.All patients were treated with the use of gadolinium bate as a contrast agent and intravenous injection.Compare two sets of contrast agent allergy.ResultsTwo groups of patients showed different levels of allergic reactions.The control group had five mild allergies, one moderate allergy, one severe allergy, and seven cases of allergy.There were two cases of mild allergy, 1 case of moderate allergy, no severe allergies, and 3 cases of allergies.Compared with the experimental group, the difference was statistically significant (P<0.05).ConclusionIn MR enhancement scanning to psychological counseling, diet, health education and other measures, to reduce the probability of contrast media in patients with allergic, have clinical significance.

Objective Essential polyunsaturated fatty acids(PUFA) can not been synthesized by the body-self.Serum triglycerides n-6 and n-3 PUFAs directly or indirectly reflect the corresponding unsaturated fatty acids intake from meals.This study was to investigate the relationship of serum triglycerides polyunsaturated fatty acid composition with the ratio of n-6 to n-3 PUFA(n-6/n-3 PUFA) and magnetic resonance imaging measured intra-abdominal fat(MRI-IAF) with other body fat parameters of patients with metabolic syndrome.Methods Thirty-six patients with metabolic syndrome and 41 healthy controls were enrolled in this investigation.The relevance of serum triglycerides polyunsaturated fatty acids with MRI-IAF was observed.A stepwise regression analysis was applied to determine which kind of triglycerides polyunsaturated fatty acid could predict MRI-IAF,waist circumference and body mass index (BMI) more potent.Results In the metabolic syndrome group,blood sugar,lipid profiles,blood pressure,visceral fat accumulation-related parameters and serum triglycerides polyunsaturated fatty acid composition was worse than those in the control group.Compared with the healthy controls,n-6/n-3 PUFA was significantly increased(t=8.564,P＜0.05),although C18∶3 n-3,C20∶5 n-3(EPA),C22∶6 n-3(DHA) and n-3PUFA were significantly declined(t=-2.920,-7.034,all P＜0.05) in metabolic syndrome group.The difference of n-6 PUFA showed no statistically significant difference(t=-0.957,-1.494,P＞0.05).n-6/n-3 PUFA,n-3 PUFA,EPA and DHA were associated with MRI-IAF(r=-0.377,0.565,all P＜0.05); n-6/n-3 PUFA was correlated with the waist circumference(r=0.400,P=0.016) and BMI(r=0.357,P=0.033),while n6 PUFA showed no correlation with body fat parameters.N-6/n-3 PUFA was more potent to predict MRIIAF,waist circumference and BMI(adjusted R2=0.102,0.299,all P＜0.05) than other polyunsaturated fatty acids.Conclusions The ratio of n-6/n-3 PUFA and n-3 PUFA may be positively correlated with EPA and DHA could be inversely associated with MRI-IAF and other body fat-related parameters in patients with metabolic syndrome,while n-6 PUFA did not show such a relationship.The ratio of n-6/n-3 PUFA might be more potent to predict MRI-IAF and other body fat-related parameters.

Objective To analyze the CT and MRI features of splenic inflammatory myofibroblastoma (SIMF).Methods The CT and MRI images of 6 patients with SIMF were retrospectively analyzed.Results 5 cases underwent CT examination;2 cases did MRI.Six cases of SIMF were all single lesions;the average diameter was (3.9 ± 0.9) cm;the lesions were round or gourdshaped;most have clear boundaries with uneven scan density.On the MRI,the parenchymal part was slightly low signal on T1WI,inhomogeneous hypointensity on T2WI,or high signal on T2WI.After CT or MRI enhancement,lesions were progressively enhanced.Correct preoperative diagnosis was established in only 1 patient.Conclusion In this study,all SIMF cases present as single lesion.The circular appearance and clear boundaries are in common.Asymptotic intensification with map-unenhanced regions is the main enhancement feature.

Objective To investigate the value of magnetic resonance imaging (MRI) in the diagnosis of malignant meningioma. Methods Analyzed MRI examination and other clinical data of 19 patients with malignant meningioma retrospectively, and the tumor location, size, shape, signal characteristics of MRI, peritumoral edema and the surround-ing tissue infiltration were observed. Results Meningiomas were mainly located at the convexity of brain and sagittal si-nus, diameters were 1.6~11.8 cm, tumors showed lobulated shape in 7 cases, irregular shape were showed in 8 cases, o-val in 4 cases; The boder was clear in 6 cases, ill defined in 13 cases, and invaded the surrounding tissue in varying degrees;Edema in varying degrees were seen in 15 cases;The tumors were low hypointense on T1 weighted (T1WI) im-ages in 8 cases, low, equal mixed signal in10 cases, high signal in 1 case, The tumors were hypointense on T2 weighted (T2WI) images in 2 cases, equisignal in 4 cases, high signal and equisignal in 13 cases, homogeneous signal in 6 cases, inhomogeneous signal in 13 cases, irregular necrosis or cystic areas were seen inside; Homogeneous enhancement were seen in 4 cases, heterogeneous enhanced in 15 cases. Short and thick irregular "dural tail sign" were showed in tu-mours surrounding in 13 cases. Conclusion Malignant meningioma has characteristics in MRI, MRI examination has important value in the qualitative diagnosis, and localization diagnosis in malignant meningiomas.

Background: Blackened intestines in slaughtered pigs have been commonly observed in China in recent years. However, no cause has been reported. Objectives: We attempted to determine whether the blackening of the pig intestine was related to an excess of copper (Cu) in their feed. Methods: In this study, we observed and collected porcine intestines in small- and large-scale pig slaughterhouses in Shandong province from May to October 2018. Twelve types of metal ions were detected in the black intestinal samples. Results: The Cu level in the intestine samples was mostly higher than the Chinese national limit for food. Further study showed that Cu supplementation in most commercial porcine feed also exceeded the national standard. An animal model (mouse) that could mimic the intestinal blackening in pigs was established. Compared to control mice, Cu accumulated in the liver and intestines of mice fed an excessive Cu level, confirming the excessive Cu in the feed may be considered the major cause of blackened porcine intestines. Microscopic examination revealed that black intestines had many particles containing Cu in the lamina propria of the intestinal mucosa, and the intestinal mucosal epithelial cells showed degeneration and necrosis. Conclusions In conclusion, overuse of Cu in animal feed can lead to animal poisoning and Cu accumulation in animal products. Such overuse not only harms the health of livestock but can also affect public health.

Background: Blackened intestines in slaughtered pigs have been commonly observed in China in recent years. However, no cause has been reported. Objectives: We attempted to determine whether the blackening of the pig intestine was related to an excess of copper (Cu) in their feed. Methods: In this study, we observed and collected porcine intestines in small- and large-scale pig slaughterhouses in Shandong province from May to October 2018. Twelve types of metal ions were detected in the black intestinal samples. Results: The Cu level in the intestine samples was mostly higher than the Chinese national limit for food. Further study showed that Cu supplementation in most commercial porcine feed also exceeded the national standard. An animal model (mouse) that could mimic the intestinal blackening in pigs was established. Compared to control mice, Cu accumulated in the liver and intestines of mice fed an excessive Cu level, confirming the excessive Cu in the feed may be considered the major cause of blackened porcine intestines. Microscopic examination revealed that black intestines had many particles containing Cu in the lamina propria of the intestinal mucosa, and the intestinal mucosal epithelial cells showed degeneration and necrosis. Conclusions In conclusion, overuse of Cu in animal feed can lead to animal poisoning and Cu accumulation in animal products. Such overuse not only harms the health of livestock but can also affect public health.