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find Keyword "局灶性" 59 results
  • Value of Gd-BOPTA Enhanced MR Imaging in Diagnosing Focal Nodular Hyperplasia of Liver (Report of 5 Cases)

    Objective To investigate the value of a new double action MR contrast agent——Gd-BOPTA in the diagnosis of focal nodular hyperplasia (FNH) of the liver with correlation of pathology. Methods Dedicated MRI scans were performed for 5 patients suspected to have liver FNH on clinical and imaging basis (six lesions). The MR imaging protocol included axial T1W and T2W plain scan, coronal T2 weighted imaging, 3D MRCP, Gd-BOPTA enhanced LAVA dynamic tri-phasic acquisitions (scanning at 15 s, 55 s and 90 s respectively), enhanced 2D T1W scan, enhanced LAVA in delay phase (at 5 and 10 min) and in the hepatobiliary phase (at 40 and 80 min). The imaging features on each MR sequence were compared with surgical and pathological findings. Results Six lesions in 5 FNH patients were all correctly diagnosed (5 conformed by surgery and 1 by needle biopsy). ①The hemodynamic phase: The parenchyma of 5 lesions were markedly enhanced in the arterial phase, being isointense or slight hypointense in both the portal venous and delay phases, while 1 lesion was isointense in all phases except being slight hyperintense in the arterial phase; The central scar of 5 lesions were not enhanced in the dynamic phase, but showed delayed enhancement. ②The hepatobiliary (excretory) phase: The parenchyma of all 6 lesions were slight hyperintense or isointense, and tree-like bile ducts with hyperintensity were seen within one lesion. The scar showed no enhancement. ③Pathology: The parenchyma was consisted of disarranged normal hepatocytes but with cytoedema, lack of portal tracts and cholestatic change. The central scar showed rich fibrous tissue, a very thick-walled arteriole, proliferative bile ducts, infiltration of inflammatory cells and myxomatous changes. Conclusion As a dual-phase MR contrast agent capable of depicting both the hemodynamic attributes and hepatobiliary excretion, Gd-BOPTA enhanced MRI can reflect the pathological features of FNH and reach a high diagnostic accuracy.

    Release date:2016-09-08 11:49 Export PDF Favorites Scan
  • Clinical analysis of 31 patients with hepatic focal nodular hyperplasia

    Objective To summarize clinical features, imaging findings, diagnosis, treatment, and prognosis of patients with hepatic focal nodular hyperplasia. Method The clinical data of patients with hepatic focal nodular hyperplasia who underwent hepatectomy from July 2014 to July 2016 in the Xiangya Hospital of Central South University were analyzed retrospectively. Results There were 12 males and 19 females in the 31 patients with hepatic focal nodular hyperplasia, the male-to-female ratio was 1∶1.58. The age was from 15 to 67 years old with (39.7±11.5) years old. Physical examination found 21 cases, there were symptoms in 10 cases. Laboratory examination: only 2 patients with long-term drinking history had mild AST abnormality, HBsAgs of 6 cases were positive, CA19-9 level of one patient was slightly increased (40.54 kU/L). Thirteen patients with hepatic focal nodular hyperplasia were diagnosed by imaging examination, the diagnostic rate of MRI was significantly higher than that of color Doppler ultrasound (P<0.05) or CT (P<0.05). The diameter of the lesions ranged from 2 cm to 11 cm with (4.6±2.1) cm. All lesions were resected, including 13 cases by laparoscopic hepatectomy, and 18 cases by laparotomy. Compared with by the laparotomy, the intraoperative blood loss was less (P<0.05), the hospital stay and intestinal exhaust time were shorter (P<0.05) by the laparoscopic hepatectomy. Twenty-nine patients were followed up from 3 to 24 months, no patient died, the quality of life was better, no recurrence and metastasis happened. Conclusions Hepatic focal nodular hyperplasia is benign lesion, it has a good prognosis, generally without clinical symptoms, its laboratory feature has no abnormality. The combination of multiple imagings and pathological diagnosis could improve diagnosis rate. Surgical resection should be performed for suspected malignant tumor or other hepatic occupying lesions. Laparoscopic surgery has some advantages of quick recovery and less bleeding for it.

    Release date:2017-05-04 02:26 Export PDF Favorites Scan
  • The study of electroencephalogram and magnetic resonance imaging about Wistar suckling rats Focal cortical dysplasia model

    ObjectiveTo make the model of Wistar suckling rats Focal cortical dysplasia (FCD) by liquid nitrogen freezing brain cortex and verify it. Analysed the electroencephalogram (EEG) and magnetic resonance imaging (MRI) features of the FCD model, in order to provide theoretical and experimental basis for human FCD diagnosis and treatment. MethodsTake the first day of Wistar suckling rats as experimental object, liquid nitrogen freezing Wistar suckling rats brain cortex.Make examination of EEG and MRI for Wistar suckling rats. The Brain tissue slice of Wistar suckling rats model dyed by HE and check with light microscope examination. ResultsIn experiment group, the sample epileptic discharge rate of EEG was about 41.6% on average, and showed visible spike wave, spine slow wave frequency distribution. Experimental Wistar suckling rats MRI showed positive performance for long T1 and long T2 signal, brain tissue slices HE staining showed brain cortex layer structure and columnar structure disorder, exist abnormal neurons and the balloon sample cells. ConclusionThe method of liquid nitrogen freezing Wistar suckling rats cortex can established FCDⅢd animal models successfully, and showed specific EEG and MRI, which has important value for diagnosis and treatment of human FCD.

    Release date:2016-11-28 01:27 Export PDF Favorites Scan
  • Application of Dual-Energy CT Scanning Technology in The Liver

    ObjectiveTo summarize the application of dual-energy CT scanning technology in the liver. MethodsTo search the relevant literatures at home and abroad, then the application of dual-energy CT scanning technology in focal liver lesions, diffuse liver lesions were analyzed and summarized. ResultsDual-energy CT scanning technology can improve detection rate of the focal liver lesions, liver cancer recurrence lesions after local treatment and help to differentiate focal liver lesions, to stage the malignant lesions, and it also can be more accurate quantification of liver iron, fat content, indirect measurement of hepatic blood flow dynamics change situation. ConclusionDual-energy CT scanning technology can improve the diagnostic value of CT scanning technology in liver disease.

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  • Clinical efficacy of perampanel monotherapy in children with focal epilepsy

    Objective To explore the efficacy and safety of Perampanel (PER) monotherapy in children with focal epilepsy. Methods Forty-six children with focal epilepsy who were newly diagnosed in the Department of Neurology of Wuxi Children's Hospital and had not used anti-seizure medications during January 2021 to June 2022 were selected, including 24 males and 22 females, with an average age of (7.2 ± 2.4) years old. Mono-therapy of PER as the PER group (23 cases), mono-therapy of Levetiracetam (LEV) as the LEV group (23 cases). Compare the clinical efficacy and adverse reactions between the two groups. Result The total effective rate was 87.0% (20/23) in PER group and 73.9% (17/23) in LEV group after 3 months of treatment (P<0.05); the total effective rate in the PER group was 78.3% (18/23), and 60.9% (14/23) in the LEV group after 6 months of treatment (P<0.05). The differences were statistically significant. In the PER group, 2 children had adverse reactions, 1 case was lethargic, and 1 case was dizziness. By temporarily reducing the drug dose and slowing the rate of dosing, the adverse reactions disappeared. In LEV group, 3 children had adverse reactions, all of who were irritable in varying degrees. By slowing down the rate of drug addition, 2 children’s symptoms disappeared and 1 child's symptoms relieved during 3 ~ 6 months. Conclusion The new anti-seizure medication — PER has a better anti-epileptic effect on focal epilepsy, which is better than LEV. The adverse reactions of both drugs are less and mild, and can be selected according to clinical conditions.

    Release date:2023-05-04 04:20 Export PDF Favorites Scan
  • Review of Magnetic Resonance Diffusion-Weighted Imaging in Liver

    Objective To review the examination techniques and the current research progress of the magnetic resonance diffusion weighted-imaging (DWI) used in liver. Methods The recent and relevant literatures about the principles and the current study situation of liver DWI were scrutinized and analyzed retrospectively. In addition, the existing problems of liver DWI were discussed. Results DWI could demonstrate the normal and abnormal structure and function through measuring the diffusion motions of water molecule in the liver. With the improving technology and better understanding of diffusion dynamics, DWI has been used for the diagnosis and differential diagnosis for hepatic diseases. Conclusion DWI as a non-invasive examine method, may provide valuable functional information for clinical diagnosis and treatment.

    Release date:2016-09-08 11:49 Export PDF Favorites Scan
  • Diagnosis and Treatment of Hepatic Focal Nodular Hyperplasia(Report of 9 Cases )

    目的 探讨肝脏局灶性增生结节(FNH)的诊断和治疗。 方法 回顾性分析哈尔滨医科大学第一临床医学院1993年1月至2004年12月12年间收治并经病理检查证实的9例FNH的临床、影像学和病理学资料。结果 FNH术前正确诊断率较低,该病多见于中、青年,多无乙型肝炎病毒感染,AFP检查正常,彩色多普勒检查多发现病灶有血管通过,CT动态扫描增强后早期有显著强化,MRI检查也有明显强化。结论 FNH在临床和影像学上均有一定特征,综合分析临床表现、实验室检查与多种影像学资料可提高正确诊断率。

    Release date:2016-09-08 11:07 Export PDF Favorites Scan
  • Investigation on the status of newly diagnosed adult epilepsy in the General Hospitals of Jilin Province

    ObjectiveTo investigate the status of newly diagnosed adult epilepsy in the General Hospital of Jilin Province, in order to improve the prevention and treatment of epilepsy. MethodsTo collect the clinical data of newly diagnosed adult epilepsy from October 2016 to February 2017, and to follow up 6 months. ResultsA total of 81 patients were included. At the last clinic visit, 73 cases origined from focal, 74 cases were positive in EEG examination, 56 cases were unknown etiology, 12 cases had hippocampal sclerosis, 48 cases were mildly declined cognitive function, and 30 cases were poor compliance. ConclusionThe newly diagnosed epilepsy were focal origin, delayed treatment, mildly declined cognitive function and poor compliance.

    Release date:2017-09-26 05:09 Export PDF Favorites Scan
  • Ⅲ期临床试验非盲延期阶段联合使用吡仑帕奈的局灶性癫痫患者的四年药物安全性、耐受性及发作结局:307 号研究

    评估 307 号研究(临床试验验证码:NCT00735397)Ⅲ期非盲延期阶段(OLEx)联合使用吡仑帕奈的局灶性癫痫患者的药物安全性、耐受性及痫性发作结局。患者在完成任一 III 期双盲试验后均可进入非盲延期阶段(Open-labelextension,OLEx)。对所有 OLEx 队列中有同样最小吡伦帕奈暴露剂量的局灶性癫痫和继发全面性癫痫(Secondarily generalized seizures,SGS)的患者进行药物安全性及耐受性和痫性发作结局(每 28 d 中位痫性发作减少率、反应率和无发作率)的分析。另外,针对 OLEx 的早期失访进行了额外的敏感性分析。从 1 480 例双盲试验中随机分组的患者共纳入 1 218 例。大部分患者(65.4%~80.9%)仅用吡仑帕奈 12 mg,每日一次,进行治疗,并在相同剂量下完成长期的检测,或是相对基线联合使用少量抗癫痫药物(AEDs)。长期的药物安全性及耐受性结果与双盲研究一致。导致超过 1% 的患者研究中断治疗的紧急不良反应事件(Treatment-emergent adverse events,TEAEs)包括眩晕、易激、疲劳。有临床意义的 TEAEs 稳定期为 4 年。所有队列中患者的痫性发作结局随时间持续改善。对于接受 3 年(n = 436)、4 年(n = 78)药物治疗的患者 28 d 中位痫性发作减少率分别为 62%、70.6%,相应的 50% 反应率为 59.6%、67.9%。最大 28 d 中位痫性发作减少率发生于基线水平的 SGS 患者,接受 3 年(n = 190)、4 年(n = 28)药物治疗分别为 88.0% 和 100.0%。在这些队列中分别有 40.0% 和 53.6% 的患者达到了无 SGS。排除早期失访后的 28 d 中位痫性发作减少率结果类似。长期吡仑帕奈联合用药(≤4 年)不会导致新的药物安全性及耐受性问题,并且可以很大程度地减少痫性发作,特别是基线水平的 SGS 患者。

    Release date:2020-03-20 08:06 Export PDF Favorites Scan
  • The characteristics of high-resolution magnetic resonance imaging with focal cortical dysplasia in children

    ObjectiveTo discuss the 3D high resolution Magnetic resonance imaging (MRI) features of focal cortical dysplasia (FCD) in children.MethodsMRI data of 42 children with FCD confirmed by pathology, from April 2015 to June 2018, which were admitted to Qilu Children’s Hospital of Shandong University, were retrospectively analyzed. The following MRI signs were observed, blurring of junction of the gray matter-white matter, abnormality of structure with focal cortex (thick or thin), gray matter and white matter signal, white matter signal increased with T2WI/FLAIR, with or without transmantle sign (abnormal signal of white matter extending in the direction of ventricle), gray matter signal increased with T2WI/FLAIR, the abnormal sulci or gyri morphology and segmental and/or hypoplasia/atrophy of the lobes.ResultsAmong the 42 cases, 37 cases (88.1%) showed MRI positive signs, FCD typeⅠ accounted for 13 cases (35.1%), the main MRI features are focal blurring of junction in the gray matter-white matter, abnormality of structure with focal cortex in the corresponding part,and white matter signal increased with T2WI/FLAIR. FCD TypeⅡ accounted for 17 cases (45.9%), the MRI features are focal blurring of junction in the gray matter-white matter, abnormality of structure with focal cortex, white matter signal increased with T2WI/FLAIR, and transmantle sign. FCD TypeⅢ accounted for 7 cases (18.9%), among which hippocampal atrophy 2 cases (28.6%), dysembryoplastic neuroepithelial tumor (DNET) 2 cases (28.6%), section cell tumor 1 case (14.3%), softening lesion with gliosis 2 cases (28.6%).ConclusionThe 3D high-resolution MRI features of FCD in children are specific and could improve the detection rate of FCD lesions.

    Release date:2020-03-20 08:06 Export PDF Favorites Scan
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