首页 | 本学科首页   官方微博 | 高级检索  
相似文献
 共查询到20条相似文献,搜索用时 187 毫秒
1.
目的 探讨布-加综合征(BCS)患者门体分流术后肝内再生结节的常规超声及超声造影表现.方法 对18例BCS门体分流术后出现肝内结节患者行常规超声及超声造影检查.结果 常规超声显示18例患者中15例肝内再生结节为多发,3例单发;多数病例结节直径较小,周边常伴有"声晕",彩色多普勒显示较大结节内血供较丰富.超声造影检查18例患者结节均表现为"快进慢出"模式,16例动脉相表现为"中央离心型"增强,2例动脉相表现为"周边向心型"增强.结论 BCS患者门体分流术后肝内再生结节常规超声及超声造影特征对判断结节性质有重要价值.
Abstract:
Objective To investigate the routine ultrasound and contrast-enhanced ultrasound (CEUS) features of hepatic nodules in Budd-Chiari syndrome(BCS) after portacaval anastomosis.Methods Routine ultrasonography and CEUS were performed in 18 BCS patients with hepatic nodules after portacaval anastomosis.Results Appearance after portosystemic anastomosis,multiplicity,small size,presence of peripheral rim and hypervascularization were important ultrasound imaging features of hepatic regenerative nodules in patients with BCS.Nodules showed " quick wash-in and slow wash-out" pattern in CEUS.Sixteen cases showed center-to-periphery enhancement pattern in arterial phase and hyper-enhancement in portal phase and late phase.Two cases showed periphery-to-center enhancement pattern in arterial phase and periphery enhancement in portal phase and late phase.Conclusions Hepatic regenerative have different features on routine ultrasound and CEUS in patients with BCS after portacaval anastomosis,which are useful for differential diagnosis.  相似文献   

2.
ObJective To evaluate the value of contrast-enhanced ultrasonography microflow imaging (MFI) in detecting prostate cancer. Methods Sixty-five patients with serum prostate-specific antigen levels higher than 4.00 μg/L were evaluated with transrectal gray-scale,power Doppler,and MFI ultrasonography and then biopsy guided by ultrasonography. Biopsy was performed at twelve sites in the base,the mid gland and the apex in each patient. In these three transverse sections, when any of the three methods showed abnormality,the biopsy site was directed to the abnormal foci. Diagnostic efficiency of the three methods for prostate cancer detection was compared based on biopsy results according to patient and biopsy site. Results Overall prostate cancers were detected in 230 (29.5 %) of 780 specimens in 36(55.4%) of 65 patients. MFI could detect more patients(34) than gray-scale(26) and power Doppler(28) (P = 0.021, P = 0.031), 6(16.7%)of the 36 patients diagnosed with cancer were identified only by MFI. By biopsy site, MFI had higher sensitivity and overall accuracy (80.0% and 83.0%) than gray-scale (47.0% and 76.8%) and power Doppler (37.4% and 74.6%) ultrasonography(P <0.001, P<0.001 ; P = 0.001, P <0.001), while the specificity of MFI was 84.4%, lower than gray-scale (89.3%) and power Doppler (90.2%) ultrasonography(P = 0.009, P < 0.001). Conclusions MFI could detect more patients and improve sensitivity and overall accuracy by biopsy site than conventional uhrasonography.  相似文献   

3.
ObJective To evaluate the value of contrast-enhanced ultrasonography microflow imaging (MFI) in detecting prostate cancer. Methods Sixty-five patients with serum prostate-specific antigen levels higher than 4.00 μg/L were evaluated with transrectal gray-scale,power Doppler,and MFI ultrasonography and then biopsy guided by ultrasonography. Biopsy was performed at twelve sites in the base,the mid gland and the apex in each patient. In these three transverse sections, when any of the three methods showed abnormality,the biopsy site was directed to the abnormal foci. Diagnostic efficiency of the three methods for prostate cancer detection was compared based on biopsy results according to patient and biopsy site. Results Overall prostate cancers were detected in 230 (29.5 %) of 780 specimens in 36(55.4%) of 65 patients. MFI could detect more patients(34) than gray-scale(26) and power Doppler(28) (P = 0.021, P = 0.031), 6(16.7%)of the 36 patients diagnosed with cancer were identified only by MFI. By biopsy site, MFI had higher sensitivity and overall accuracy (80.0% and 83.0%) than gray-scale (47.0% and 76.8%) and power Doppler (37.4% and 74.6%) ultrasonography(P <0.001, P<0.001 ; P = 0.001, P <0.001), while the specificity of MFI was 84.4%, lower than gray-scale (89.3%) and power Doppler (90.2%) ultrasonography(P = 0.009, P < 0.001). Conclusions MFI could detect more patients and improve sensitivity and overall accuracy by biopsy site than conventional uhrasonography.  相似文献   

4.
ObJective To evaluate the value of contrast-enhanced ultrasonography microflow imaging (MFI) in detecting prostate cancer. Methods Sixty-five patients with serum prostate-specific antigen levels higher than 4.00 μg/L were evaluated with transrectal gray-scale,power Doppler,and MFI ultrasonography and then biopsy guided by ultrasonography. Biopsy was performed at twelve sites in the base,the mid gland and the apex in each patient. In these three transverse sections, when any of the three methods showed abnormality,the biopsy site was directed to the abnormal foci. Diagnostic efficiency of the three methods for prostate cancer detection was compared based on biopsy results according to patient and biopsy site. Results Overall prostate cancers were detected in 230 (29.5 %) of 780 specimens in 36(55.4%) of 65 patients. MFI could detect more patients(34) than gray-scale(26) and power Doppler(28) (P = 0.021, P = 0.031), 6(16.7%)of the 36 patients diagnosed with cancer were identified only by MFI. By biopsy site, MFI had higher sensitivity and overall accuracy (80.0% and 83.0%) than gray-scale (47.0% and 76.8%) and power Doppler (37.4% and 74.6%) ultrasonography(P <0.001, P<0.001 ; P = 0.001, P <0.001), while the specificity of MFI was 84.4%, lower than gray-scale (89.3%) and power Doppler (90.2%) ultrasonography(P = 0.009, P < 0.001). Conclusions MFI could detect more patients and improve sensitivity and overall accuracy by biopsy site than conventional uhrasonography.  相似文献   

5.
ObJective To evaluate the value of contrast-enhanced ultrasonography microflow imaging (MFI) in detecting prostate cancer. Methods Sixty-five patients with serum prostate-specific antigen levels higher than 4.00 μg/L were evaluated with transrectal gray-scale,power Doppler,and MFI ultrasonography and then biopsy guided by ultrasonography. Biopsy was performed at twelve sites in the base,the mid gland and the apex in each patient. In these three transverse sections, when any of the three methods showed abnormality,the biopsy site was directed to the abnormal foci. Diagnostic efficiency of the three methods for prostate cancer detection was compared based on biopsy results according to patient and biopsy site. Results Overall prostate cancers were detected in 230 (29.5 %) of 780 specimens in 36(55.4%) of 65 patients. MFI could detect more patients(34) than gray-scale(26) and power Doppler(28) (P = 0.021, P = 0.031), 6(16.7%)of the 36 patients diagnosed with cancer were identified only by MFI. By biopsy site, MFI had higher sensitivity and overall accuracy (80.0% and 83.0%) than gray-scale (47.0% and 76.8%) and power Doppler (37.4% and 74.6%) ultrasonography(P <0.001, P<0.001 ; P = 0.001, P <0.001), while the specificity of MFI was 84.4%, lower than gray-scale (89.3%) and power Doppler (90.2%) ultrasonography(P = 0.009, P < 0.001). Conclusions MFI could detect more patients and improve sensitivity and overall accuracy by biopsy site than conventional uhrasonography.  相似文献   

6.
ObJective To evaluate the value of contrast-enhanced ultrasonography microflow imaging (MFI) in detecting prostate cancer. Methods Sixty-five patients with serum prostate-specific antigen levels higher than 4.00 μg/L were evaluated with transrectal gray-scale,power Doppler,and MFI ultrasonography and then biopsy guided by ultrasonography. Biopsy was performed at twelve sites in the base,the mid gland and the apex in each patient. In these three transverse sections, when any of the three methods showed abnormality,the biopsy site was directed to the abnormal foci. Diagnostic efficiency of the three methods for prostate cancer detection was compared based on biopsy results according to patient and biopsy site. Results Overall prostate cancers were detected in 230 (29.5 %) of 780 specimens in 36(55.4%) of 65 patients. MFI could detect more patients(34) than gray-scale(26) and power Doppler(28) (P = 0.021, P = 0.031), 6(16.7%)of the 36 patients diagnosed with cancer were identified only by MFI. By biopsy site, MFI had higher sensitivity and overall accuracy (80.0% and 83.0%) than gray-scale (47.0% and 76.8%) and power Doppler (37.4% and 74.6%) ultrasonography(P <0.001, P<0.001 ; P = 0.001, P <0.001), while the specificity of MFI was 84.4%, lower than gray-scale (89.3%) and power Doppler (90.2%) ultrasonography(P = 0.009, P < 0.001). Conclusions MFI could detect more patients and improve sensitivity and overall accuracy by biopsy site than conventional uhrasonography.  相似文献   

7.
ObJective To evaluate the value of contrast-enhanced ultrasonography microflow imaging (MFI) in detecting prostate cancer. Methods Sixty-five patients with serum prostate-specific antigen levels higher than 4.00 μg/L were evaluated with transrectal gray-scale,power Doppler,and MFI ultrasonography and then biopsy guided by ultrasonography. Biopsy was performed at twelve sites in the base,the mid gland and the apex in each patient. In these three transverse sections, when any of the three methods showed abnormality,the biopsy site was directed to the abnormal foci. Diagnostic efficiency of the three methods for prostate cancer detection was compared based on biopsy results according to patient and biopsy site. Results Overall prostate cancers were detected in 230 (29.5 %) of 780 specimens in 36(55.4%) of 65 patients. MFI could detect more patients(34) than gray-scale(26) and power Doppler(28) (P = 0.021, P = 0.031), 6(16.7%)of the 36 patients diagnosed with cancer were identified only by MFI. By biopsy site, MFI had higher sensitivity and overall accuracy (80.0% and 83.0%) than gray-scale (47.0% and 76.8%) and power Doppler (37.4% and 74.6%) ultrasonography(P <0.001, P<0.001 ; P = 0.001, P <0.001), while the specificity of MFI was 84.4%, lower than gray-scale (89.3%) and power Doppler (90.2%) ultrasonography(P = 0.009, P < 0.001). Conclusions MFI could detect more patients and improve sensitivity and overall accuracy by biopsy site than conventional uhrasonography.  相似文献   

8.
ObJective To evaluate the value of contrast-enhanced ultrasonography microflow imaging (MFI) in detecting prostate cancer. Methods Sixty-five patients with serum prostate-specific antigen levels higher than 4.00 μg/L were evaluated with transrectal gray-scale,power Doppler,and MFI ultrasonography and then biopsy guided by ultrasonography. Biopsy was performed at twelve sites in the base,the mid gland and the apex in each patient. In these three transverse sections, when any of the three methods showed abnormality,the biopsy site was directed to the abnormal foci. Diagnostic efficiency of the three methods for prostate cancer detection was compared based on biopsy results according to patient and biopsy site. Results Overall prostate cancers were detected in 230 (29.5 %) of 780 specimens in 36(55.4%) of 65 patients. MFI could detect more patients(34) than gray-scale(26) and power Doppler(28) (P = 0.021, P = 0.031), 6(16.7%)of the 36 patients diagnosed with cancer were identified only by MFI. By biopsy site, MFI had higher sensitivity and overall accuracy (80.0% and 83.0%) than gray-scale (47.0% and 76.8%) and power Doppler (37.4% and 74.6%) ultrasonography(P <0.001, P<0.001 ; P = 0.001, P <0.001), while the specificity of MFI was 84.4%, lower than gray-scale (89.3%) and power Doppler (90.2%) ultrasonography(P = 0.009, P < 0.001). Conclusions MFI could detect more patients and improve sensitivity and overall accuracy by biopsy site than conventional uhrasonography.  相似文献   

9.
ObJective To evaluate the value of contrast-enhanced ultrasonography microflow imaging (MFI) in detecting prostate cancer. Methods Sixty-five patients with serum prostate-specific antigen levels higher than 4.00 μg/L were evaluated with transrectal gray-scale,power Doppler,and MFI ultrasonography and then biopsy guided by ultrasonography. Biopsy was performed at twelve sites in the base,the mid gland and the apex in each patient. In these three transverse sections, when any of the three methods showed abnormality,the biopsy site was directed to the abnormal foci. Diagnostic efficiency of the three methods for prostate cancer detection was compared based on biopsy results according to patient and biopsy site. Results Overall prostate cancers were detected in 230 (29.5 %) of 780 specimens in 36(55.4%) of 65 patients. MFI could detect more patients(34) than gray-scale(26) and power Doppler(28) (P = 0.021, P = 0.031), 6(16.7%)of the 36 patients diagnosed with cancer were identified only by MFI. By biopsy site, MFI had higher sensitivity and overall accuracy (80.0% and 83.0%) than gray-scale (47.0% and 76.8%) and power Doppler (37.4% and 74.6%) ultrasonography(P <0.001, P<0.001 ; P = 0.001, P <0.001), while the specificity of MFI was 84.4%, lower than gray-scale (89.3%) and power Doppler (90.2%) ultrasonography(P = 0.009, P < 0.001). Conclusions MFI could detect more patients and improve sensitivity and overall accuracy by biopsy site than conventional uhrasonography.  相似文献   

10.
ObJective To evaluate the value of contrast-enhanced ultrasonography microflow imaging (MFI) in detecting prostate cancer. Methods Sixty-five patients with serum prostate-specific antigen levels higher than 4.00 μg/L were evaluated with transrectal gray-scale,power Doppler,and MFI ultrasonography and then biopsy guided by ultrasonography. Biopsy was performed at twelve sites in the base,the mid gland and the apex in each patient. In these three transverse sections, when any of the three methods showed abnormality,the biopsy site was directed to the abnormal foci. Diagnostic efficiency of the three methods for prostate cancer detection was compared based on biopsy results according to patient and biopsy site. Results Overall prostate cancers were detected in 230 (29.5 %) of 780 specimens in 36(55.4%) of 65 patients. MFI could detect more patients(34) than gray-scale(26) and power Doppler(28) (P = 0.021, P = 0.031), 6(16.7%)of the 36 patients diagnosed with cancer were identified only by MFI. By biopsy site, MFI had higher sensitivity and overall accuracy (80.0% and 83.0%) than gray-scale (47.0% and 76.8%) and power Doppler (37.4% and 74.6%) ultrasonography(P <0.001, P<0.001 ; P = 0.001, P <0.001), while the specificity of MFI was 84.4%, lower than gray-scale (89.3%) and power Doppler (90.2%) ultrasonography(P = 0.009, P < 0.001). Conclusions MFI could detect more patients and improve sensitivity and overall accuracy by biopsy site than conventional uhrasonography.  相似文献   

11.
目的 了解肠系膜上动脉综合征(S MAS)的多层螺旋CT(MSCT)特征。方法 对4例反复发作的餐后上腹饱胀感、呕吐及体质量下降的病人分别行MSCT、上消化道钡餐透视和内镜检查,4例病人均行手术治疗。结果 手术证实3例为SMAS,1例为十二指肠腺癌。3例S MAS病人经MSCT确诊,上消化道钡餐透视诊断S M AS病人1例,内镜检查未能作出诊断。S MAS的MSCT表现为胃及十二指肠扩张,腹主动脉-肠系膜上动脉间距离分别为5.0、7.0、7.8 mm,其夹角分别为22 0.b、20.0b、21 5.b。结论MS CT对S MAS的诊断有重要价值,可成为诊断S MAS的首选方法。  相似文献   

12.
超声双重造影诊断肠系膜上动脉综合征   总被引:1,自引:1,他引:0  
目的 探讨超声双重造影(DCUS)诊断肠系膜上动脉综合征(SMAS)的应用价值.方法 收集经上消化道钡餐造影证实为SMAS的23例患者(SMAS组),随机选取上消化道造影检查结果正常的25名健康成人作为对照组,行常规超声及DCUS检查,测量肠系膜上动脉与腹主动脉(SMA-AO)夹角,夹角处及夹角前十二指肠内径(D夹及D前),计算D前/D夹,并进行统计学比较.结果 DCUS能清楚显示SMA-AO.与对照组相比,SMAS组SMA-AO夹角及D夹减小,D前及D前/D夹增大,差异均有统计学意义(P均<0.05).分别以SMA-AO夹角<15°、D夹<10 mm、D前>30 mm及D前/D夹>2.7为标准,超声诊断SMAS的正确率分别为73.91%(17/23)、91.30%(21/23)、82.61%(19/23)和100% (23/23).结论 DCUS能够清晰显示SMA-AO的解剖关系,对临床诊断SMAS有一定指导意义.  相似文献   

13.
目的 探讨肠系膜上动脉(SMA)与腹主动脉(AO)间隙面积对肠系膜上动脉综合征(SMAS)的诊断价值。方法 收集接受腹部CT增强检查的24例SMAS患者(SMAS组)及42例非SMAS患者(非SMAS组),测量SMA-AO间隙面积、夹角、经十二指肠水平部中心SMA-AO距离及SMA起始部至十二指肠水平部中心水平距离,并进行统计学分析。结果 两组SMA-AO间隙面积、夹角、经十二指肠水平部中心SMA-AO距离及SMA起始部至十二指肠水平部中心水平距离差异有统计学意义(P均<0.05),ROC分析显示SMA-AO间隙面积、夹角、经十二指肠水平部中心SMA-AO距离及SMA起始部至十二指肠水平部中心水平距离的ROC曲线下面积分别为0.997、0.783、0.867及0.751。结论 SMA-AO间隙面积对诊断SMAS具有较高的准确率,可作为诊断SMAS的参考标准。  相似文献   

14.
OBJECTIVE—To describe and discuss a case of superior mesenteric artery syndrome (SMAS) presenting with gastrointestinal signs and symptoms mistakenly attributed to, and treated as, diabetic gastroparesis.RESEARCH DESIGN AND METHODS—A case report was compiled describing the clinical presentation, including history and physical examination, evaluation, diagnosis, and treatment of a patient with type 1 diabetes presenting with gastrointestinal complications.RESULTS—Clinical suspicion combined with the appropriate radiological evaluation led to a diagnosis of SMAS, with classic findings of reduced aortomesenteric angle and distance. Surgical intervention resulted in resolution of symptoms and recovery of glycemic control.CONCLUSIONS—The possibility of SMAS should be considered in patients with type 1 diabetes presenting with gastrointestinal symptomatology, especially when associated with weight loss.Patients with type 1 diabetes experience greater frequency of gastrointestinal complications, such as diabetic enteropathy (manifested by diarrhea), steatorrhea and/or constipation (1), and gastroparesis, which commonly presents as bloating but may also result in early satiety, epigastric pain or discomfort, nausea, vomiting, postprandial fullness, and anorexia. The clinician must be vigilant because these symptoms may be due to less common etiologies such as superior mesenteric artery syndrome (SMAS). The patient in this study is only the second reported patient with type 1 diabetes complicated by SMAS (2).  相似文献   

15.
目的 探讨术中常规超声与超声造影在判断肿瘤切除后术腔周围残留肿瘤中的临床应用价值.方法 对38例脑胶质瘤患者于脑胶质瘤切除术中行常规超声及超声造影检查,实时观察脑肿瘤切除范围,判断肿瘤切除后术腔周围有无残留肿瘤.同时在术腔四壁及底部取脑组织行病理检查.将术中常规超声及超声造影诊断结果与术后病理诊断结果进行对照分析.结果 术中常规超声及超声造影引导下对38例脑胶质瘤患者行手术切除并引导术者在术腔取组织标本205处,病理结果证实术腔及周围组织有肿瘤残留10例(10/38),无肿瘤残留28例(28/38).与病理诊断结果对照,术中常规超声诊断术腔及周围组织有无肿瘤残留与病理诊断结果符合29例(76.3%,29/38),漏误诊9例,诊断符合率为76.3%(29/38);术中超声造影诊断术腔及周围组织有无肿瘤残留与病理诊断结果符合34例,漏误诊4例,诊断符合率为89.5%(34/38),高于术中常规超声,差异有统计学意义(χ2=0.835,P<0.01).结论 术中超声造影能有效地检出术腔及周围组织中的残留肿瘤,有助于提高脑胶质瘤手术全切率.  相似文献   

16.
胃间质瘤超声造影和胃镜检查应用比较   总被引:1,自引:0,他引:1  
目的探讨超声造影诊断胃间质瘤的价值。方法本院门诊或住院患者21例,经口服高回声型的胃超声造影剂,显示胃壁肿块,其中4例给予经静脉的双重超声造影(口服胃超声造影剂加静脉注射SonoVue对胃肿块血流灌注进行观察)。结果 21例肿瘤均为单发,经口服超声造影表现为低回声或近似无回声肿物,瘤体大小为3~9.3cm,平均(4.1±1.4)cm,其内可探及血流信号。双重超声造影提示良性病变3例,恶性病变1例,均与手术病理结果相符合。超声造影提示恶性胃间质瘤4例,与手术病理符合率为80.0%(4/5),良性胃间质瘤15例,符合率为93.75%(15/16),提示良性可能性大和恶性可能性大者各1例。胃镜检出16例,活检提示良性胃间质瘤13例,恶性3例,与手术病理符合率为100%,2例肌壁间型和3例腔外型未检出。手术病理结果为恶性间质瘤5例,良性16例。结论超声造影诊断胃间质瘤有较高的临床价值,可作为临床诊断的首选方法。  相似文献   

17.
With the use of gray scale B scan ultrasound, it is now feasible in many cases to detect portions of the superior mesenteric artery (SMA) arising from the aorta. Thus, it is possible to measure the aortomesenteric angle and distance. We evaluated a series of patients by ultrasound to determine the normal values for the SMA angle, distance, and lumen diameter. Patients were also examined who had pathological conditions that might produce an alteration in the angle and distance. Abnormal widening was observed in patients with aortic aneurysms and para-aortic lymphosarcomatous nodes. In patients suspected of having duodenal ileus, there was evidence of narrowing of the superior mesenteric artery angle and distance. However, a comparable group of asymptomatic patients of the same age showed a similarly narrowed angle and distance. It was thus concluded that the narrowing of the aortomesenteric angle and distance is not a cause of duodenal ileus. Knowledge of the SMA and aortic lumen diameter has been helpful in selecting the proper catheter and approach for selective arteriography.  相似文献   

18.
目的 探讨肠充盈超声检查在直肠疾病中的诊断价值.方法 对70例经病理证实的直肠疾病患者行经直肠超声和肠充盈超声检查,观察病灶形态、大小、回声、血流信号、侵犯肠壁程度、直肠周围肿大淋巴结数目及与周围脏器关系等.比较经直肠超声和肠充盈超声检查对直肠疾病的诊断价值.结果 70例患者检出78个病灶,包括48个直肠癌,17个腺瘤和10个炎性团块.经直肠超声检出病灶54个(72%),肠充盈超声检查检出病灶75个(100%),两种方法检出率比较差异有统计学的意义(x2=22.148,P<0.001).经直肠超声和肠充盈超声检查对检出病灶定位准确率均为100%.结论 肠充盈超声检查在直肠病灶的病变检出率优于经直肠超声检查,可以无创、实时动态鉴别诊断直肠疾病.  相似文献   

19.

Objective

This article reviews the causes, clinical presentation, and CT diagnosis of superior mesenteric artery (SMA) syndrome.

Conclusion

In conjunction with an appropriate clinical history, several CT findings can suggest the diagnosis of SMA syndrome. These findings include narrowing of the aortomesenteric angle and distance, distension of the stomach and duodenum, and dilatation of the left renal vein with left-sided venous collaterals.  相似文献   

20.
超声双重造影对进展期胃癌Borrmann分型的价值   总被引:1,自引:0,他引:1  
目的 探讨超声双重造影对进展期胃癌术前Borrmann分型的价值.方法 对69例进展期胃癌患者,术前行口服胃窗造影剂及静脉注射造影剂双重造影检查,将其结果与手术病理对照分析.结果 口服胃窗超声造影对胃癌术前Borrmann分型的准确率为78.3%,超声双重造影对胃癌Borrmann分型准确率达91.3%,两者Borrmann分型准确率差异有统计学意义(X2=4.087,P<0.05).此外,两者进行一致性检验,Kappa值分别为0.73、0.90.结论 超声双重造影对进展期胃癌术前Borrmann分型有较高的准确性.  相似文献   

设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号