目的 回顾性分析不同病理类型乳腺黏液腺癌的超声声像图特征,从而提高术前乳腺黏液腺癌不同亚型的超声诊断准确率。方法 分析43名患者共44例手术切除或穿刺活检证实为乳腺黏液腺癌病灶的声像图资料,包括病灶的边界、边缘、形态、回声类型、生长方向、钙化、后方回声、血流分级、腋窝淋巴结形态,并对病灶进行BI-RADS分类。将超声声像图特征与手术或活检后病理结果进行对比,总结出不同亚型的乳腺黏液腺癌的超声声像图特征。结果 44例乳腺黏液腺癌病理类型分为21例单纯型黏液腺癌和23例混合型黏液腺癌,混合型黏液腺癌大多数表现为病灶边界不清(73.9%)、边缘模糊毛刺(73.9%)、形状不规则(91.3%)、以及内部回声不均匀(87%)、病灶内钙化更多见(52.2%)。混合型黏液腺癌的淋巴结转移率明显高于单纯型黏液腺癌(P<0.05)。对比术前病灶的BI-RADS分类及术后病理诊断,超声对恶性病灶诊断准确率68%,单纯型黏液腺癌和混合型黏液腺癌的诊断准确率分别为48.6%、87%。结论 不同病理类型乳腺黏液腺癌间具有一些不同的声像图特征。混合型黏液腺癌大多数表现为病灶边界不清、边缘模糊毛刺、形状不规则、回声不均匀、病灶内钙化多见;单纯型乳腺黏液腺癌通常表现为边界清晰、形态规则、钙化少见、淋巴结转移少等良性肿块声像特征,超声对其误诊率较高,需提高警惕。

Objective Retrospectively evaluate the sonographic features of different types of mucinous breast carcinoma to improve the preoperative ultrasound diagnostic accuracy rate. Methods Sonographic features of 44 cases of MBC proven by pathological biopsy were analyzed, including the margin,lesion boundary,shape,echo pattern,lesion growth pattern, calcification, posterior acoustic feature,blood flow, lymph node form and data system(BI-RADS)classification for the lesion to sum up the different subtypes of breast ultrasonic ultrasonographic features of mucinous carcinoma. Results 21 cases of pure mucinous carcinoma (PMBC)and 23 cases of mixed mucinous carcinoma(MMBC)were founded. MMBC were more likely to have unclear boundary (73.9%), indistinct or spiculate of margin(73.9%), irregular shape (91.3%), heterogeneous internal echo (87%), more calcification in lesions(52.2%). Lymph node metastasis in MMBC was obviously higher than that of PMBC(P<0.05). Compared with preoperative of the BI-RADS classification and pathological diagnosis, ultrasonography in diagnosing accuracy rate was 68% in malignant lesions, 48.6% in PMBC and 87% in MMBC. Conclusion There are some different ultrasonographic characteristics in different types of breast mucinous carcinoma.MMBC are more likely to have unclear boundary, indistinct or spiculate of margin, irregular shape, more calcification in lesions. On the contrary, PMBC has a circumscribed boundary, abrupt interface edge, rare calcification, rare lymph node metastasis and are easily misdiagnosed as benign lesions. We should pay more attention to avoid misdiagnosis in ultrasonography.

目的 探讨低频脉冲超声联合微泡对微血管的渗出作用。方法 20只新西兰大白兔分为4组:空白组、单纯微泡组、单纯超声组、超声微泡组,进行实验观察。用频率为1 MHz,声压2000 MPa的脉冲超声辐照兔肠系膜及肠壁血管,在荧光显微镜下观察辐照前后肠系膜及肠壁上微血管的损伤,并静脉注入伊文思蓝溶液,观察超声辐照后对伊文思蓝溶液的渗出。结果 空白组、单纯微泡组、单纯超声组在超声辐照后肠系膜及肠壁上微血管内血流通畅,注入伊文思蓝溶液后,微血管内呈蓝色染色,血管周围未见渗出;超声微泡组在超声辐照后微血管周围可见渗出,部分形成血肿。结论 低频脉冲超声联合微泡对微小血管管壁产生损伤作用,血管周围可见渗出,部分形成血肿。

目的 探讨微泡增强的超声空化对荷瘤兔乳腺癌的治疗效果。方法 建立兔VX2乳腺癌模型,肿瘤兔随机分成两组,超声微泡组及单纯超声组,各组于治疗前及治疗后分别行超声造影,分析造影前后肿瘤灌注情况。结果 超声微泡组治疗前后造影灰阶值改变明显,造影灰阶值从治疗前的(20.26±2.59)降至(3.71±1.61)(P<0.01);而单纯超声组肿瘤造影灰阶值无明显统计学差异(P>0.05)。结论 微泡增强的超声空化对荷瘤兔乳腺癌有一定的治疗效果。

Objective To investigate the treatment effect of microbubbles-enhanced ultrasound cavitation on VX2 breast tumor in rabbits. Methods The rabbit model of VX2 breast tumor were established. The rabbits were randomly divided into two groups, microbubbles-enhanced ultrasound (US+MBs) group and standard ultrasound (US) group. The VX2 breast tumor perfusion were imaged and assessed using contrast enhanced ultrasonography (CUES) before and after treatment. Results The contrast enhanced grayscale value (GSV) of VX2 breast tumors decreased significantly in the US+MBs group, from 20.26±0.59(before treatment) to 3.71±.761 (after treatment)(P<0.01). While there was no significance of GSV before and after treatment (P>0.05) in the US group. Conclusion Microbubble-enhancement ultrasound cavitation has a certain therapeutic effect on the VX2 breast tumor in rabbits.

目的 采用二维斑点追踪技术(2D-STI)检测冠状动脉左前降支供血区心肌纵向应变,探讨其评估缺血心肌局部收缩功能的价值。方法 使用2D-STI检测不同狭窄程度(＜50%、50%~75%、＞75%)及未见明确狭窄的左前降支供血区心肌纵向应变参数:心内膜下、心外膜下及区域心肌收缩期纵向应变峰值-LS-endo、LS-epi、LS-Territorial,计算收缩期心肌跨壁纵向应变(LS-mural)。观察PCI术后供血区心肌纵向应变的变化。结果 各组内LS-endo均高于对应的LS-epi(均P<0.01)。随着左前降支狭窄程度增加,LS-endo、LS-epi、LS-Territorial、LS-mural逐渐减低(均P<0.01)。术后LS-endo、LS-epi、LS-Territorial逐渐增高,LS-mural先增高后缓慢减低再增高。结论 2D-STI可定量检测不同层次的心肌纵向应变,反映心肌局部收缩功能,为早期识别缺血心肌、评价PCI术后疗效提供参考依据。

Objective To detect myocardial longitudinal strain in the area supplied by left anterior descending coronary artery (LAD) via two dimensional speckle tracking image (2D-STI), and to investigate its estimated value of myocardial systolic function of ischemic myocardium. Methods Detection of myocardial longitudinal strain parameters in the area supplied by the LAD with different stenosis degree(＜50%、50%~75%、＞75%) and no definite stenosis via 2D-STI:subendocardial longitudianl strain (LS-endo), subepicardial longitudianl strain (LS-epi) and territorial longitudianl strain (LS-Territorial). Calculate transmural longitudinal strain (LS-mural) in the systole.Then observe the changes of myocardial longitudinal strain in the blood supply area after percutaneous coronary interventional therapy (PCI). Results LS-endo, LS-epi, LS-Territorial and LS-mural gradually decrease with the increase of LAD stenosis (all P<0.01). After operation, LS-endo, LS-epi and LS-Territorial increase progressively (all P<0.01). LS-mural increases first and then decreases and finally increases slowly. Conclusion Layer-specific quantification of myocardial longitudinal strain by 2D-STI may reveal the regional myocardial systolic function. It is useful to identify the ischemic myocardium in the early stage and evaluate the treatment effect of PCI.

目的 探讨微泡增强的超声空化增加睾丸组织的药物浓度的可行性。方法 18只雄性8月龄性成熟新西兰兔随机分为空白对照组(C)、单纯微泡组(MB)、治疗超声组(TUS)、超声联合微泡辐照组(MEUS)4组,每组各9个。MB组给予静注微泡造影剂 0.1 mL/kg ;TUS组给予超声辐照5min;MEUS组给予静注微泡造影剂0.1 mL/kg的同时超声辐照5min;每组在治疗前5min均经耳缘静脉注射2%伊文思蓝(EB)2.5 mL/kg;治疗后1 h取各组睾丸组织制备组织匀浆测量 EB 浓度。结果 MEUS组兔睾丸组织内 EB 浓度高于其他各组(P<0.05),差异有统计学意义。结论 微泡增强的超声空化可以明显提高睾丸组织内EB浓度。

Objective To investigate feasibility of microbubbles enhanced ultrasound (MEUS) on the concentration of Evans blue (EB) in rabbit,stestis. Methods Eighteen sexually mature male New Zealand rabbits were divided into four groups randomly. Pulsed ultrasound irradiation and intravenous microbubbles injection were both applied in the microbubbles enhanced ultrasound group (MEUS), pulsed ultrasound irradiation and intravenous microbubbles injection were individually applied in the therapeutic ultrasound group (TUS) and the simple microbubbles group (MB). Injection of EB was applied in each group five minutes before the treatment.Concentration of EB in testis tissue was measured homogenated. Results The concentration of Evans blue(EB) in rabbit's testis in MEUS group was statistically higher than the other groups (P<0.05). Conclusion Microbubbles enhanced ultrasound (MEUS) can increase the concentration of Evans blue (EB) in rabbit's testis.

目的 初步探讨微泡增强的脉冲式超声治疗脾创伤出血的作用机制。方法 14只健康家犬随机分为3组,超声微泡组(MEUS组)6只、单纯超声组(TUS组)4只、单纯微泡组(MB组)4只。开腹切割脾建立脾破裂出血模型,MEUS组用脉冲式超声治疗仪辐照伤口,同时静脉匀速推注微泡;TUS组超声治疗时静脉推注生理盐水;MB组超声治疗仪假照的同时静脉推注微泡。治疗完毕,进行超声造影评价,并送病理组织学检查。结果 MEUS组造影示靶区造影增强缺损或者低灌注,但较粗大血管仍为增强显影。病理组织学见脾窦、微小血管扩张充血、血管周围组织水肿,血小板聚集,微小血管血栓形成。结论 微小血管血栓形成、微血管淤血扩张、周围组织水肿压迫是超声联合微泡治疗脾创伤出血的可能机理。

Objective To investigate the mechanism of haemostatic effect induced by microbubble(MB)enhanced therapeutic ultrasound(TUS)on splenic trauma. Methods 14 healthy dogs were divided into 3 groups.Six animals were treated by microbubble-enhanced therapeutic ultrasound(MEUS),the other eight animals were treated with TUS only group(n=4)and the MB only(n=4)served as the controls.The spleens of all animals were surgically exposed and a 20 mm long,5 mm deep incision was created on the spleens using scalpel.Contrast enhanced ultrasound(CEUS)was performed to assess the blocking effects of splenic circulation.The targeted spleens were harvested for pathological examination. Results A non-enhanced or perfusion defect region was formed within the treated area.The histological results showed splenic sinus hyperemia,microvascular hyperemia,perivascular tissue edema,platelet aggregation and intravascular thrombosis. Conclusion The mechanism of haemostatic effect on splenic trauma by microbubble enhanced ultrasound maybe intravascular thrombosis,microvascular hyperemia and perivascular tissue edema oppression simultaneously.

目的 分析经直肠彩超引导下不同前列腺穿刺方式的阳性率及其相关因素,探讨安全的穿刺方案。方法 回顾性分析接受经直肠彩超引导下前列腺穿刺的701例患者临床资料,所有患者均接受系统性13点穿刺活检,并假设13点穿刺中减少前列腺中线3个穿刺点为10点穿刺术式,加之标准的6点穿刺术式。比较上述穿刺术式的阳性率,分析T-PSA、前列腺体积、PSA体积密度(PSAD)、有无前列腺结节对穿刺阳性率的影响。结果 随前列腺穿刺针数的增加,活检阳性率增高。同一穿刺方式,不同T-PSA组间、不同前列腺体积组、不同PSAD组阳性率有差异。T-PSA>100 ng/mL时,三种穿刺方式的阳性率无差异;T-PSA<100 ng/mL时,6点穿刺法阳性率较低,而10点穿刺、13点穿刺阳性率无差异。前列腺体积>80 mL时,不同穿刺法阳性率有差异。PSAD<0.5 ng/mL²时,10点、13点穿刺阳性率无差异。结论 前列腺穿刺活检阳性率随穿刺针数增多而增加,可根据PSA水平、前列腺体积、PSAD选择个体化穿刺方案。