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Objective To summarize the image features of nutcracker syndrome (NCS)on 320 multi-slice spiral computed tomo-graphy angiography (CTA).Methods The clinical and CTA data of 1 5 cases with NCS were analyzed retrospectively.The angle(α) between superior mesenteric artery (SMA)and abdominal aorta(AA)was measured.The ratio(a/b)of the diameters of the most narrow and the most wide at the hilus of left renal vein (LRV)was calculated.Results The angel(α)of 1 5 cases were ranged from 15.5°to 27.6°.The range of a/b was from 0.22 to 0.35.Left renal enlargement were observed on four cases.Collateral circulation were detected on two cases.Duodenal stasis was detected on one case.Conclusion CTA findings of NCS is characteristic,which can noninvasively,rapidly and comprehensively display the surrounding anatomy of LRV.It is helpful in clinical diagnosis.
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Objective To compare magnetic resonance spectroscopy (MRS) characteristics and changes before and after 5-Fu interventional thermochemotherapy (ITC) as well as to analyze the correlation of Cho/Lip and apoptosis index (AI) in hepatic VX2 carcinoma animal model.Methods 20 rabbit models of hepatic VX2 carcinoma were implanted successfully.Ten days later,as tumor diameter≥ 10 mm,routine scan and 1H-MRS were performed before one day and after 14 days on all of rabbits by Philips 1.5T MR scanner.The changes of Cho peak,Lip peak and the ratio of Cho/Lip before and after the treatment were analyzed.Specimens of AI were examined and compared with the ratio of Cho/Lip.Results The Cho peak and Lip peak were increased before ITC.After ITC,the Cho peak and the ratio of Cho/Lip decreased than before.The Lip peak was further increased than that of before.AI was correlated negatively with the ratio of Cho/Lip (r =-0.56,P =0.02).Conclusions The metabolites of different ROI are matched with the levels and scopes of AI.1H-MRS can be used to evaluate tumor cell apoptosis and energy metabolism changes of the rabbit models of hepatic VX2 carcinoma with the treatment.
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Aim To observe the protective effects of choline and pilocarpine,the M3 receptor agonists,on the arrhythmias of Wistar rats induced by barium chloride.Methods Barium chloride was used to induce the experimental arrhythmias of Wistar rats.Choline,pilocarpine,and 4-diphenylacetoxy-N-methylpiperidine-methiodide (4-DAMP),the selective antagonist of M3 receptor,were used to explore the effects of M3 receptor on the arrhythmias induced by barium chloride.The occurence and the severity of arrhythmias were observed.Results Choline 10 mg?kg-1 and pilocarpine 0.2 mg?kg-1 inhibited the occurence of arrhythmias,shortened the duration of arrhythmias (P