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1.
目的:分析肝海绵状血管瘤的螺旋CT表现特点,探讨应用螺旋双期或三期增强扫描鉴别肝内实性占位灶的价值。方法:对48 例患者CT平扫发现肝内占位病灶后采用螺旋CT增强扫描。造影剂单相注射,每秒3~3.5 m l,每例50~80 m l。第一相全肝螺旋增强扫描在造影剂注入后20~25 s开始,第二相60~70 s,延迟5~15m in 对病灶所在的层面进行扫描。结果:58 个病灶平扫均为境界清楚的低密度区,增强后43 例(89.58% )于动脉期出现病灶边缘部致密的结节状或斑块状强化,门静脉期扫描增强区域扩大或整个结节增强。延迟扫描病灶全部强化或绝大部分强化,密度与肝实质相等或稍高。3 例(6.26% )动脉期表现为致密强化结节影(直径< 2cm ), 门静脉期结节密度变淡,延迟扫描病变与肝脏等密度。2 例(4.16% )动脉期未见病灶强化,门静脉期病灶稍小,延迟扫描病变呈等密度灶。结论:肝海绵状血管瘤的特征表现是增强早期病灶边缘区的结节状致密强化,与肝癌的鉴别之处在于延迟相病灶表现为相等或稍高密度  相似文献   

2.
王平  范洪侠 《中原医刊》2007,34(11):92-92
目的评价螺旋CT三期扫描在肝癌和肝脏血管瘤鉴别诊断中的价值,探讨动脉期、门静脉期扫描的意义,以提高CT诊断的正确性。方法回顾性分析经病理证实的22例肝癌患者及8例肝血管瘤患者的上腹部螺旋CT三期增强扫描,观察肿瘤三期强化的方式和特征。结果22例肝癌中,有18例在肝动脉期出现周边轻度强化,均匀或不均匀;有4例小肝癌出现明显强化。门静脉期强化不明显。延迟扫描病灶呈低密度改变。密度-时间曲线呈速升速降型。8例肝血管瘤动脉期周边强化,呈结节状或斑块状,门静脉期病灶明显强化,延迟期呈向心性强化等密度改变,密度-时间曲线呈速升缓降型特点。结论螺旋CT三期扫描在肝癌与肝血管瘤鉴别诊断中具有重要价值,应作为肝脏占位性病变的常规扫描方法。  相似文献   

3.
目的:探讨螺旋CT三期增强扫描对肝内结节性占位病变的诊断价值。方法回顾性分析2010年1月-2014年3月在我院CT检查发现的直径≤5cm的肝内结节性占位病变的平扫及三期增强表现。结果肝细胞癌10例,表现为动脉期强化明显,门脉期、延迟期呈低密度。肝转移瘤7例,表现为动脉期强化不明显,门脉期边缘环状强化,延迟期低密度。血管瘤8例,表现为动脉期病灶边缘(较小者整个病灶)高密度强化,门脉期增强区逐渐向病灶中心扩散,延迟期变成等密度。炎性假瘤3例,表现为动脉期强化不明显,门脉期、延迟期病灶边缘环形强化。结核瘤1例,门脉期、延迟期轻度环形强化。肝囊肿9例,三期均未见强化。结论大部分肝内结节性占位病变在螺旋CT三期扫描图像上有其特征性表现,能做出定性诊断。  相似文献   

4.
螺旋CT三期增强扫描在肝血管瘤诊断中的价值分析   总被引:1,自引:0,他引:1  
目的:探讨螺旋CT三期增强扫描在肝血管瘤中的影像特点及诊断价值。方法:搜集46例肝血管瘤患者在螺旋CT平扫后进行螺旋CT三期增强扫描的资料。扫描范围为全肝;层厚为5mm~8mm,pitch=1.2,对比剂为优维显(300mgI/ml),采用单相期团注法注入剂量为80ml~100ml,流速2.5ml/s~3.5ml/s。延迟时间:动脉期(HAP)延迟25s~30s、门静脉期(PVP)延迟65s~70s、延迟期延迟3min~10min。结果:动脉期强化病灶49个(84.5%),门脉期对比剂逐渐向病灶中心充填,9个无明显强化病灶开始强化。延迟扫描见造影剂进一步向病灶中心填充,48个病灶(82.6%)完全填充为等密度,其余10个(17.2%)病灶部分充填。结论:肝血管瘤螺旋CT三期增强的各期大多数有典型特点,在诊断及鉴别诊断中具有重要的价值。  相似文献   

5.
目的 探讨16层螺旋CT增强三期扫描对诊断肝血管瘤的影像学价值.方法 回顾性分析经影像学及临床最后诊断的23例肝血管瘤患者CT资料.结果 23例27个病灶中有22例24个病灶平扫表现为低密度,1例3个病灶平扫表现为等密度.增强扫描动脉期27个病灶均出现边缘结节状和(或)斑状强化,且强化环绕病灶周围.门静脉期22个病灶强化范围向中心扩散、延伸;5个病灶完全强化.延迟期27个病灶均完全强化或大部分强化.结论 16层螺旋CT增强三期扫描对肝血管瘤的诊断及鉴别诊断有很大的价值.  相似文献   

6.
葛乃永 《西部医学》2014,(4):512-514,517
目的探讨肝血管瘤螺旋CT平扫及动态增强扫描的CT表现及其诊断价值。方法收集60例CT诊断为肝脏血管瘤患者的临床有关资料,分析肝脏血管瘤CT特征和临床价值。结果 60例患者共93枚肝血管瘤病灶,其中单发病灶36例(60.0%),多发病灶24例(40.0%)。表现为平扫门、腔静脉样低密度灶,动态增强扫描早期呈边缘结节状强化,延迟扫描趋于与肝实质呈等密度。结论动态增强扫描早期边缘结节状强化,晚期持续等密度充填是肝脏血管瘤的特征性表现,具有定性诊断的价值。  相似文献   

7.
王志强 《基层医学论坛》2014,(11):1424-1425
目的:探讨利用螺旋CT增强扫描诊断肝血管瘤的要点。方法回顾性分析在我院行上腹部螺旋CT平扫及增强扫描的肝血管瘤患者18例。结果18例患者均经彩色多普勒超声证实或考虑肝血管瘤,CT平扫表现为肝内单发或多发圆形、椭圆形低密度影,边界清楚,密度均匀;增强扫描:动脉期均呈结节及环形强化,门静脉期造影剂逐渐向内填充,延迟期见大多数病灶完全填充为等密度,个别较大病灶部分填充,中心可见低密度区。结论“二快一慢”的CT增强扫描与肝血管瘤的诊断正确率密切相关,而病灶渐进性强化特点在肝血管瘤的诊断和鉴别诊断中具有重要价值,CT增强扫描对诊断肝血管瘤是一种有效而准确的方法。  相似文献   

8.
肝转移瘤的螺旋CT双期扫描   总被引:1,自引:1,他引:0  
目的评价肝转移瘤在螺旋CT平扫、肝动脉期和门静脉期(双期扫描)中病变检出的效果,分析病灶在双期扫描中的表现特点.方法33例肝转移瘤患者平扫后行全肝双期扫描,计算平扫、肝动脉期、门静脉期显示的病变数目;比较各时相病灶显示率的差异,观察病灶在双期扫描中的强化方式.结果33例共检出病灶156个,平扫显示76个,动脉期显示89个,门静脉期显示145个,门静脉期病灶显示率明显高于平扫和动脉期,而动脉期与平扫的病灶显示率无明显差异.动脉期51个病灶呈边缘环状强化,5个病灶均匀强化,门静脉期15个病灶仍表现边缘环状强化,其余所见病灶边缘与周围肝组织呈等密度,中央为低密度.结论螺旋CT门静脉期病灶显示率明显高于平扫和动脉期,但对病变的血供情况显示门静脉期不及动脉期.  相似文献   

9.
邹文远  石思李  李胜 《西部医学》2010,22(7):1294-1295
目的总结68例肝脏血管瘤的CT与临床表现,探讨多层螺旋CT三期增强扫描在肝血管瘤中的影像特点及诊断价值。方法搜集68例肝血管瘤的CT平扫及增强扫描资料。回顾性分析经手术病理证实为肝血管瘤的CT表现特点。结果大多数肝血管瘤CT平扫表现为肝内单发或多发圆形、椭圆形的低密度影,边界较清楚。增强扫描动脉期呈结节样、环形或斑片状强化,门脉期对比剂逐渐向病灶中心充填。延迟期扫描造影剂进一步向病灶中心充填,部分病灶完全充填为等密度或部分充填。结论结节样强化是CT诊断肝血管瘤的特征性表现,CT三期增强扫描是诊断肝血管瘤的一种有效而准确的方法,具有定性诊断的价值。  相似文献   

10.
目的探讨肝脏巨大海绵状血管瘤的螺旋CT表现,以提高其诊断水平。方法对经手术病理、DSA及临床观察证实的肝脏巨大血管瘤患者36例(共38个病灶,其中4例为外生型)的螺旋CT三期表现进行回顾性分析。结果CT平扫22个病灶内为均匀低密度灶,16个病灶内见结节状或裂隙状更低密度区。增强扫描动脉期38个病灶均出现边缘不规则强化,门脉期强化范围明显从边缘向中心扩大,延迟5 min有15个病灶呈全瘤均匀强化,23个病灶呈部分强化,延迟10 min后,16个病灶内仍可见结节状或裂隙状无强化区;4例外生型其增强表现与肝内病灶相似。结论肝脏巨大血管瘤的螺旋CT三期动态增强扫描CT表现有其特征性,据此可提高肝脏巨大血管瘤的诊断的正确性及与肝内其他病变的鉴别。  相似文献   

11.
Objective To observe blood pressure change with age in salt-sensitive teenagers whose salt sensitivity were determined by repeated testing.Methods Salt sensitivity was determined through intravenous infusion of normal saline combined with volume-depletion by oral diuretic furosemide in 55 teenagers. After five years, salt sensitivity was re-examined and subject blood pressure was followed up. Blood pressure changes in salt-sensitive teenagers were compared to that of non-salt sensitive teenagers over five years.Results After 5 years, the repetition rate of salt sensitivity determined by intravenous saline loading is 92.7%. In teenagers with salt sensitivity on the baseline, both the systolic blood pressure increments and increment rates were much higher than non-salt sensitive teenagers (12.7±12.1 mmHg vs. 2.8±5.2 mmHg, P< 0.01; 12.2%± 12.0% vs. 2.5% ±4.4%, P< 0.001,respectively). There was a similar trend for diastolic blood pressure (8.4 ± 6.4 mmHg vs. 3.7 ± 6.4 mmHg, P = 0.052; 13.2% ±10.6 % vs. 6.8%± 10.1%, P = 0.053, respectively).Conclusions Salt sensitivity determined by intravenous saline loading showed good reproducibility. Blood pressure increments with age were much higher in salt-sensitive teenagers than non-salt sensitive teenagers, especially in terms of systolic blood pressure.  相似文献   

12.
Objective: To evaluatel the value of D-dimers in patients with acute aortic dissection (AAD). Methods: This study consisted of 16 patients with AAD and 27 non-AAD patients. Serum D-dimets were measured by Sta-Liatest D-DI immunoturbidimetric assay. Results: D-dimer level was higher (P < 0.001) in patients with AAD(7.91 ± 5.52 μg/ml) than that in non- AAD group(1.57±1.24 μg/ml). D-dimer was positive (>0.4 μg/ml) in all patients with AAD and in 10 control group patients (37%). Among patients with acute AAD, D-dimers tended to be higher in Stanford A than in Stanford B (8.67 ± 4.31 μg/ml vs. 3.24±1.27 μg/ml, P <0.01). D-dimer values tended to be higher in more extended disease(3.84 ± 1.65 μg/ml, 8.57 ± 3.58 μg/ml and 11.87 ± 5.69 μg/ml in thoracic aorta, thoracic and abdominal aorta, thoracic and abdominal aorta and iliacal arteries, respectively, P < 0.05 for both 8.57 ± 3.58 and 11.87 ± 5.69 vs. 3.84 ± 1.65 ). Including the control group into the analysis, we found a sensitivity of 100%, a negative predictive value of 100%, and a specificity of 66% and a positive predictive value of 64% for D-dimer in diagnosis of AAD in our patients with suspected AAD. Conclusion: D-dimer was elevated in patients with AAD. A negative D-dimer test result could be useful in excluding AAD.  相似文献   

13.
Objective: To set up a simple and reliable rat model of combined liver-kidney transplantation. Methods: SD rats served as both donors and recipients. 4℃ sodium lactate Ringer's was infused from portal veins to donated livers,and from abdominal aorta to donated kidneys, respectively. Anastomosis of the portal vein and the inferior vena cava (IVC) inferior to the right kidney between the graft and the recipient was performed by a double cuff method, then the superior hepatic vena cava with suture. A patch of donated renal artery was anastomosed to the recipient abdominal aorta. The urethra and bile duct were reconstructed with a simple inside bracket. Results: Among 65 cases of combined liver-kidney transplantation, the success rate in the late 40 cases was 77.5%. The function of the grafted liver and kidney remained normal. Conclusion: This rat model of combined liver-kidney transplantation can be established in common laboratory conditions with high success rate and meet the needs of renal transplantation experiment.  相似文献   

14.
Increasing maternal age is the only etiological factor unequivocally linked to Down's syndrome in humans. The occurrence rate of newborns with Down's syndrome is about 1/220 in women over 35 years old. However, the occurrence rate in embryos fertilized in vitro, of the elder woman is unclear. Using FISH we screened the number of chromosome 21 in preimplanted embryos of 5 elderly women (average age, 38.4 years) to study the feasibility and necessity of screening trisomy 21 in embryos in patients over 35 years old at the in vitro fertilization (IVF) center.  相似文献   

15.
Real-time three-dimensional echocardiography (RT3DE)is a new ultrasound technique that enables dynamic threedimensional visualization and quantification of the heart in real time. Investigation of feasibility and methodology of RT3DE in determining left ventricular (LV) and right ventricular (RV) volumes, RT3DE was performed in 35 normal adults using Philips SONOS 7500 system with a 2-4 MHz matrix array transducer. The 60°×60° "pyramid" volume database was obtained and analyzed on a TomTec echo workstation. Both LV and RV volumes were calculated with four 3DE methods (i.e. apical 2, 4, 8, and 16-plane) through manually tracing ventricular endocardial borders in end diastole and end systole. Stroke volumes were then calculated. LV volume was also measured by 2DE Simpson's rule using GE VIVID 7 ultrasound machine.  相似文献   

16.
A clinical guideline for the therapeutic interventions of integrative medicine may be defined as a written document which states a series of recommendations on therapeutic interventions of integrative medicine for a special disease or condition. The guideline may provide assistance to medical professionals in making clinical decisions aimed at improving the clinical outcome of patients and reducing the costs of medical care(~'4~. Recommendations issued by a guideline should be based on the best available evidence in both Western and Chinese medicine. For fulfilling this purpose, the development of clinical guidelines for therapeutic interventions in the field of integrative medicine should follow scientific principles and undergo a rigorous processes.  相似文献   

17.
Objective:To probe into the influence of changes of ovarian hormones on the pathogenesis of the specific sub-type premenstrual syndrome(PMS)and reveal partial microcosmic mechanisms of adverse flow of liver-qi.Methods:Estradiol(E2)and progesterone(P)levels in serum were determined at different phases of menstrual cycle by radioimmunoassay.Results:In the group of PMS with adverse flow of liver-qi.the secretive peak value Of E2 and P at the follicular phase significantly decreased,and the secretive peak value at the luteal phase did not come into being.Conclusions:Low E2 and P secretive peak at the follicular phase and absence of secretive peak at the luteal phase is one of the microcosmic mechanisms of PMS with adverse flow of liver-qi.One of the pathophysiologic mechanisms of specific sub-type PMS is probably the continuous low level of E2and P.  相似文献   

18.
Journal of Nanjing Medical University (English Edition) JNMU, sponsored by Nanjing Medical University, was established in 1987. It is a bimonthly comprehensive English medical journal published locally and abroad.Since 2007, Journal of Nanjing Medical University (English Edition )was granted Elsevier the full publishing and distribution rights worldwide for the Electronic Edition, excluding the People's Republic of China.  相似文献   

19.
目的:评价使用安心颗粒对急诊经皮冠状动脉介入术(PPCI)术后生活质量的影响.方法:将160例接受PPCI的急性ST段抬高型心肌梗死患者随机分为安心颗粒组(术前顿服安心颗粒8.8g,术后安心颗粒4.4 g/次,每日2次)和对照组(仅接受基础药物治疗).所有患者均服用阿司匹林、氯吡格雷和阿托伐他汀.分别在入院时、出院前1d、出院后180 d时,应用心肌梗死多维度量表(MIDAS)、中文版SF-36评价量表对患者生活质量评分.并观察术后30 d以内的出血并发症、血小板减少症发生情况.结果:入院时和出院前1d,两组患者的心肌梗死MIDAS、SF-36量表评分比较无差异(P>0.05);出院后180 d时,与对照组比较,安心颗粒组MIDAS、SF-36评分明显减低(P<0.05);组内与入院时比较,两组出院前1d、出院后180 d时,MIDAS、SF-36评分均降低(P<0.05).两组患者在随访期间均无大量出血、少量出血、重度和极重度血小板减少症发生,安心颗粒组有4例、对照组有7例发生不明显出血(P>0.05).两组发生轻度血小板减少症的患者数比较无差异(P>0.05).结论:PPCI使用安心颗粒,能改善急性ST段抬高型心肌梗死患者的生活质量,且不增加出血风险.  相似文献   

20.
Objective:To investigate the influences of urapidil and nicardipine on rabbit sinus function,atrio-ventricular node function and hemodynamics.Methods:Thirty-two Angora's rabbits were selected and randomly divided into four groups.U1 group:urapidil 0.25 mg/kg;U2 group:urapidil 0.5 mg/kg;N1 group:nicardipine 10 μg/kg;N2 group:nicardipine 20 μg/kg.All these medicine were administrated within 30 seconds.Measurements were taken before and after the administration of urapidil or nicardipine for the following data:mean blood pressure(MAP),heart rate(HR),sino-atrial conduction time(SACT),maximal sinoatrial recovery time(SNRTmax)corrected sinus node recovery time(CSNRT),index of sinus node recovery time(SNRTI),Wenckebach A-V conduction frequency (WB),and P-R interval.Results:Significant MAP and HR changes were identified in all of the four groups before and after administration of both urapidil and nicardipine.No significant changes could be found in the rest of the parameters.Intergroup analysis showed that SACT and CSNRT of N1 and N2 groups were shorter than those of the U2 group(P<0.01);the MAP decreased(P<0.01)and the HR increased drastically(P<0.01).Conclusions:Neither urapidil(0.25 mg/kg,0.5 mg/kg)nor nicardipine(10μg/kg,20μg/kg)has any significant influence on rabbit sinus function or rabbit atrio-ventricular node function.Nicardipine could be a better choice than urapidil for parafunctional sinus node patients.  相似文献   

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