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  • 病例报告
    YANG Zhi;WANG Bing-heng;DING Wei-dong
    . 2007, 18(4): 268-268.
    Abstract (3582) PDF (6201)   Knowledge map   Save
  • 论著摘要
    . 2003, 14(1): 65-66.
    Abstract (2514) PDF (3028)   Knowledge map   Save
  • 病例报告
    . 2004, 15(10): 573-577.
    目的:探讨螺旋CT增强扫描在判定进展期胃癌局部浸润和胃周淋巴结转移上的应用价值。材料与方法:对56例进展期胃癌的局部浸润和胃周淋巴结转移情况进行螺旋CT诊断,并与手术病理对照。结果:依据癌肿对应局部浆膜面征象、脂肪间隙征象、癌肿局部突出征象判定癌肿穿透浆膜的准确度分别为82.14%,60.71%和55.36%。动脉期癌肿线状强化、不均匀强化和团块状强化的穿透浆膜率分别为7.14%,52.17%和89.47%。静脉期癌肿线状强化、不均匀强化和团块状强化的穿透浆膜率分别为7.14%,53.85%和93.75%。螺旋CT增强扫描判定胰腺、横结肠及其系膜、脾受累的准确度分别为87.5%,87.5%和92.86%。支持以直径9mm作为螺旋CT增强扫描诊断胃周淋巴结转移的直径标准(P<0.05)。多种胃癌生物学行为CT影像特征与癌肿对应淋巴结转移率密切相关(P均<0.05)。结论:应用螺旋CT增强扫描检查进展期胃癌的局部浸润和淋巴结转移情况,对于指导手术和制定综合治疗方案具有重要意义。
  • 论著
    WEI Dao-qin;ZHOU Mao-yi;ZHAO Xing-sheng;ZHANG Dong-wen;YUE Kui-tao;SHAO Wei-guang;LI Li-xin;LIU Jing;YANG Chun-bo
    . 2007, 18(8): 569-571.
    Abstract (2677) PDF (1994)   Knowledge map   Save
    Objective: To investigate the diagnostic value of 64 multi-detector rows CT for unknown cause of acute lower gastrointestinal bleeding. Methods: Multi-planar reconstruction and CT angiography of 64 multi-detector row CT were prospectively performed in 26 cases of unknown cause of lower gastrointestinal bleeding. Results: All 26 patients were confirmed by pathology including large intestinal tumor, 13 cases(50%), intestinal tumor, 4 cases(15.3%), intestinal obstruction, 2 cases(7.6%), hernia, 3 cases(11.5%), acute mesenteric venous thrombosis(AMVT), 3 cases(11.5%), mesenteric arterio-venous fistula, 1 case(3.8%). The diagnostic accuracy was 97%, the accuracy of predicting lesion position was 100%. Conclusion: 64 multi-detector rows CT scanning has high value for detecting the cause of intestinal hemorrhage and detecting the site of intestinal lesion.
  • 病例报告
    LIU Li-sha;LENG Xiao-ling
    . 2007, 18(8): 578-578.
    Abstract (2452) PDF (1934)   Knowledge map   Save
  • 病例报告
    . 2003, 14(1): 72-73.
    Abstract (2438) PDF (1865)   Knowledge map   Save
  • 论著摘要
    . 2003, 14(3): 211-212.
    Abstract (2963) PDF (1819)   Knowledge map   Save
  • 论著
    YI Fang;GONG Xin-huan
    . 2007, 18(7): 471-472.
    Abstract (2992) PDF (1808)   Knowledge map   Save
    Objective: To evaluate the diagnostic value of color Doppler flow dynamic changes in patients with vertebral artery course variation. Methods: The blood flow parameters of 113 patients with vertebral artery course variation among 1161 patients with cervical spondylopathy were statistically analyzed and compared to the control group. Results: The sonographic manifestations in the ipsilateral course variation vertebral artery revealed that: the diameter and flow velocity were decreased, PI and RI were increased. Conclusion: Color Doppler flow imaging is a useful noninvasive method for the diagnosis of vertebral artery course variation.
  • 论著摘要
    . 2003, 14(3): 205-206.
    Abstract (2633) PDF (1780)   Knowledge map   Save
  • 论著摘要
    ZHAO Hui-ping;JIANG Gao-min;XU Shi-tian
    . 2007, 18(8): 607-608.
    Abstract (2372) PDF (1773)   Knowledge map   Save
  • 病例报告
    . 2003, 14(4): 230-230.
    Abstract (2316) PDF (1762)   Knowledge map   Save
  • 论著
    CHEN Ping-you;QIU Jun-hua;CHEN Hai-bo;ZHOU Xuan-min;XU Lin
    . 2007, 18(7): 482-484.
    Abstract (2735) PDF (1752)   Knowledge map   Save
    Objective: To evaluate the imaging features of pigmented villonodular synovitis(PVNS), and improve imaging diagnostic ability of the disease. Methods: The imaging findings of 12 cases with PVNS confirmed by operation and pathology were analyzed retrospectively. Plain film was performed in 9, CT in 4, MRI in 5. Results: There were totally 12 lesions. Swelling of joint was seen in all patients, and 3 cases with calcifications. In total 12 patients, joint space was normal in 7 cases, widened in 1 case, narrow in 4 cases; and bone erosion was seen in 5 patients, the sclerotic margins were presented in all lesions. CT scan showed diffuse form and joint effusion in all of the 4 patients. MRI in 5 patients showed diffuse form(4 cases) and localized form(1 case); in diffuse form of PVNS, joint effusion was present, and low signal proliferated synovium in all of the patients; in localized form of PVNS in 1 patient, the single mass with joint effusion occurred. Conclusion: The MRI findings of PVNS is characteristic, which is of specific value in the diagnosis and differential diagnosis. Calcifications should not be taken as a denial of PVNS.
  • 论著
    . 2003, 14(5): 342-343.
    Abstract (1606) PDF (1726)   Knowledge map   Save
    目的:本文探讨经阴道二维及彩色多普勒超声诊断子宫肌瘤、子宫腺肌症及腺肌瘤的临床应用价值。方法:我院1998年11月1日~2002年1月1日经手术病理证实子宫肌瘤、子宫腺肌症及腺肌瘤共92例,经阴道超声分析二维及彩色多普勒血流显像(CDFI)特征。结果:二维图像上均呈特征性改变;CDFI示子宫肌瘤周边血流丰富,动脉血流阻力指数RI为0.58±0.16,子宫腺肌瘤周边血流信号稀少,RI为0.74±0.07;经阴道彩色多普勒超声诊断子宫肌瘤、腺肌症符合率分别是93.1%,76.4%。结论:经阴道彩色多普勒超声为子宫肌瘤、子宫腺肌症及腺肌瘤的鉴别诊断提供有价值信息。
  • 论著摘要
    . 2003, 14(4): 295-296.
    Abstract (1601) PDF (1693)   Knowledge map   Save
  • 论著摘要
    ZHOU He-qing;YANG Bei;QIN Yan-ling;ZHU Li
    . 2007, 18(4): 303-304.
    Abstract (2495) PDF (1652)   Knowledge map   Save
  • 论著
    CHEN Kun-tao;HE Jian-yuan;GUO Rui-zhen
    . 2007, 18(8): 591-593.
    Abstract (1745) PDF (1639)   Knowledge map   Save
    Objective: To investigate the correlation between CT perfusion features and tumoral angiogenesis of rabbit bearing VX2 tumor before and after chemoembolization. Materials and Methods: Sixty New Zealand white rabbits, the rabbits were injected with VX2 tumor piece into the left lobe of the liver. Fourteen days after implantation the 60 rabbits were divided into contrast group(n=30) and chemoembolization group(n=30) randomly. CT perfusion was performed in the two groups. MVD and expressions of VEGF were examined by immunohistochemical techniques. Statistic analysis was made. Results: There were positive correlation between CT perfusion parameters with MVD and expressions of VEGF. CT perfusion parameters, MVD and expressions of VEGF of the chemoembolization group was lower than those of the contrast group. Conclusions: CT perfusion features can reflect tumoral angiogenesis indirectly, and can estimate the effect of chemoembolization.
  • 病例报告
    . 2003, 14(5): 315-315.
    Abstract (2390) PDF (1634)   Knowledge map   Save
  • 论著
    WU Yue;ZHANG Xue-lin;YANG Ben-qiang;GUAN Chang-qun;LIU Wen-yuan
    . 2007, 18(7): 461-464.
    Abstract (2504) PDF (1567)   Knowledge map   Save
    Objective: To study the correlation between 1H-MRS, histopathology and PCNA expression. Methods: Fifty-eight patients with surgically and pathologically proved astrocytoma were analyzed. MR, 1H-MRS and MR enhancement scan were performed before operation. The ratio of metabolic material(Cho/Cr, NAA/Cho) came from different areas of tumors were calculated respectively. PCNA was stained with S-P immunohistochemical technique in 58 samples of astrocytoma. Results: The ratios of metabolic material(Cho/Cr, Cho/NAA) of astrocytoma proved to be high pathological grade were significantly higher than those astrocytoma proved to be lower pathological grade(P<0.05). Correlation between PCNA expression of different grade astrocytoma and the ratio of Cho/Cr is good(P<0.05). Conclusion: 1H-MRS has important value both in assessing the malignant grading of astrocytoma before operation and in evaluating indirect proliferating potential and prognosis of tumor cells by quantitative analyzing the ratio of metabolic material(Cho/Cr, NAA/Cho), and the correlation between the ratio of Cho/Cr and PCNA expression.
  • 论著
    . 2003, 14(5): 354-357.
    Abstract (3505) PDF (1561)   Knowledge map   Save
    目的:探讨经皮穿刺骨水泥(PMMA)治疗椎体及椎体外骨病变中不同粉液比例和不同用量的临床应用,并对椎体外骨病变的骨水泥成形术进行初步应用评价。方法:对37例,其中35例42个椎体病变行经皮穿刺椎体成形术治疗,包括椎体溶骨性转移26例,血管瘤3例,骨质疏松5例,骨髓瘤1例,另外椎体外骨成形术2例,包括髂骨1例,股骨干1例。PMMA的粉液比例为1?押1~1?押4,用量为2~15ml。结果:42个椎体及2个椎外骨病变手术均成功,本组疼痛完全缓解22例,显著缓解12例,轻度缓解3例,无效0例。CT随访未见椎体塌陷加重或发生新的压缩骨折,椎体外骨亦未见骨折,无严重并发症发生。结论:根据不同情况决定PMMA的粉液比例和用量至关重要,椎体外骨病变也适用于骨水泥治疗。
  • 论著
    . 2003, 14(5): 358-360.
    Abstract (2434) PDF (1543)   Knowledge map   Save
    目的:通过对高粘滞血症78例及对照组20例颈动脉的超声观察,探讨其与颈动脉硬化闭塞症(arteriosclerosis obliterans,ASO)的关系。方法:收集经血液流变学检测出的高粘滞血症78例及对照组20例,用双功能彩色多普勒超声仪观察颈动脉内径,IMT(血管内膜—中膜的厚度)斑块形成情况,管腔是否狭窄及其程度,并参考高粘滞血症分型标准分为4个亚型,结合B超结果进行分析。结果:高粘滞血症组中,IMT≥1.0mm,各种类型粥样硬化斑块的形成及二者所致的颈动脉狭窄的发病率均高于对照组,且Ⅳ型的腔梗发病率明显高于其它亚型。结论:对高粘滞血症患者行颈动脉双功能彩色多普勒超声检查,可以尽早发现ASO。
  • 论著摘要
    . 2003, 14(5): 371-372.
    Abstract (2198) PDF (1539)   Knowledge map   Save
  • 综述
    TONG Chun;LI Chun-lei
    . 2007, 18(5): 354-355.
    Abstract (2221) PDF (1531)   Knowledge map   Save
  • 论著
    ZHA Yun-fei;KONG Xiang-quan;YANG Jian-yong;LIU Ding-xi;FENG Gan-sheng
    . 2007, 18(7): 457-460.
    Abstract (1475) PDF (1526)   Knowledge map   Save
    Objective: To evaluate visualization of sites, degree of invasion, tumor-related veins and collateral venous pathways with three dimensional contrast enhanced magnetic resonance venography(3D-CEMRV) in parasagittal meningiomas invading the dural sinuses. Methods: Ten patients with parasagittal meningiomas were examined preoperatively with 3D-CEMRV and intraarterial digital subtraction angiography(DSA). The visualization of sites, degree, tumor-related veins and collateral venous pathways in meningiomas invading the dural sinuses were recorded in consensus by two radiologists. Compared with DSA and intraoperative findings, all manifestations were assessed on source images, maximum intensity projection images(MIP) and multiplanar reconstruction images(MPR). Results: Of the 10 patients with parasagittal meningiomas, 1 appeared invasion of sinus wall, 2 partial occlusion of sinus lumina, 7 complete occlusion of sinus lumina. The visualization of the sites of 10 parasagittal meningiomas invading the dural sinuses on 3D-CEMRV was in accordance with that of DSA and intraoperative findings. For the visualization of the degree of invasion, 3D-CEMRV images were found to be equivalent to DSA images(u=0.0000, P=1.0000), in the meanwhile, MIP images combined with MPR images and source images were superior to single MIP images(u=-1.8796, P=0.0301). With multiple postprocessing display modalities of 3D-CEMRV and DSA, the rate of the visualization of tumor-related veins and collateral venous pathways was 78.26%(36/46) and 97.83%(45/46) respectively(P=0.0016). Conclusion: With 3D-CEMRV, an exact preoperative evaluation of the sites and degree of invasion in parasagittal meningiomas invading the dural sinuses are feasible. Nevertheless, for the total visualization of tumor-related veins and collateral venous pathways, 3D-CEMRV is still inferior to DSA.
  • 病例报告
    WANG Min;WANG Jian-hong
    . 2007, 18(8): 558-558.
    Abstract (2255) PDF (1497)   Knowledge map   Save
  • 论著摘要
    . 2003, 14(2): 141-142.
    Abstract (1836) PDF (1405)   Knowledge map   Save
    动静脉畸形;体层摄影术,X线计算机
  • 论著
    . 2003, 14(6): 379-382.
    Abstract (1323) PDF (1375)   Knowledge map   Save
    目的:探讨脑膜瘤的常规MRI及质子磁共振波谱(1H-MRS)表现。材料和方法:128例行常规MRI检查,其中5例加做1H-MRS,将肿瘤区与健侧对应部位进行对照分析。结果:MRI平扫示:在SE T1WI上,68例(53%)脑膜瘤呈低信号,19例(15%)呈稍低信号,35例(27%)呈等信号,高信号和稍高信号只占6例(5%);在SE T2WI上,高信号脑膜瘤53例(42%),稍高信号26例(20%),等信号31例(24%),稍低信号10例(8%),低信号8例(6%)。注射Gd-DTPA后84例(66%)明显均匀强化,44例(34%)不均匀强化,没有不强化的病例。并且59例(46%)出现脑膜尾征。86例(67%)出现水肿。5例1H-MRS均表现为明显增高的胆碱(Cho)峰, 肌酸(Cr)浓度减低或缺如,NAA峰缺乏,Cho/Cr比值升高,并可出现乳酸峰(Lac)。结论:传统MRI在脑膜瘤的诊断中起着重要的作用,结合1H-MRS表现,可以提高MRI对脑膜瘤的诊断水平。
  • 论著
    . 2003, 14(5): 316-318.
    Abstract (1333) PDF (1315)   Knowledge map   Save
    目的:分析儿童中枢性尿崩症的病因。材料与方法:复习180例儿童尿崩症的临床资料,对其中做过CT或MRI检查的105例中枢性尿崩症的临床及影像学进行回顾性分析研究。结果:原发性尿崩症59例,继发性尿崩症46例。结论:儿童中枢性尿崩症中继发性尿崩症占有相当高比例,一些开始诊断为原发性尿崩症者,若干年后可能出现鞍区肿瘤。鞍区影像学检查对儿童中枢尿崩症的病因分析起决定性作用,影像学随访也是非常必要的。
  • 论著摘要
    . 2003, 14(3): 217-218.
    Abstract (1617) PDF (1305)   Knowledge map   Save
  • 综述
    TANG Meng
    . 2007, 18(8): 599-601.
    Abstract (1972) PDF (1291)   Knowledge map   Save
  • 专题讲座
    . 2003, 14(5): 364-368.
    Abstract (1242) PDF (1259)   Knowledge map   Save
  • 论文
    JIANG Ning-yi;LIU Xiong-ying;HU Ying-ying;ZHANG Hong;LIU Sheng;LIANG Jiu-gen;LU Xian-ping;LIU Xing-guang;CHEN Shao-xiong
    . 2007, 18(7): 479-481.
    Abstract (1400) PDF (1253)   Knowledge map   Save
    Objective: To investigate the clinical significance of 99mTc-DTPA renal dynamic imaging in evaluating renal function as intravenous pyelography(IVP) detection failed. Methods: Sixty-six abnormal kidneys in 64 patients which IVP detection failed were accepted for 99mTc-DTPA renal dynamic imaging. Results: 99mTc-DTPA renal dynamic imaging demonstrated that all the IVP detection failed kidneys had poor function and nonfunction, detailed as: grade 0 in 2 cases, grade I in 3 cases, grade II in 7 cases, grade III in 36 cases, grade IV in 18 cases. And the average GFR was 53.7ml/min, 35.8ml/min, 21.1ml/min, 12.8ml/min and 7.8ml/min respectively. Twenty cases which 99mTc-DTPA renal dynamic imaging showed normal function or function slightly damaged on the contralateral kidney, the affected kidney received nephrectomy, others accepted expectant treatments and mostly with good recovery. Conclusion: 99mTc-DTPA renal dynamic imaging is an ideal method to assess preoperative renal function especially the single renal function in IVP detection failed patients. It is a simple, noninvasive, with high-sensitivity and repeatability.
  • 论著
    . 2003, 14(1): 11-13.
    Abstract (1401) PDF (1224)   Knowledge map   Save
    目的:探讨高频超声探头对乳头溢液性病变的应用及诊断价值。方法:用7.5MHz电子线阵探头对32例乳头溢液患者进行乳腺超声检查,记录病变部位及导管或腺体内异常,同时常规行乳腺专科查体和钼靶X线检查,诊断结果与术后病理对照比较。结果:32例中导管内病变27例、导管外病变4例、囊性增生1例。超声对乳头溢液性病变的检出率为90.6%,诊断符合率为75.9%,与钼靶X线的检出率(37.5%)比较有显著性差异(P<0.05),尤其对导管内病变更显著。结论:超声可作为乳头溢液性病变尤其是导管内病变的无创性首要检诊手段。
  • 论著摘要
    . 2003, 14(1): 55-56.
    Abstract (1638) PDF (1214)   Knowledge map   Save
  • 论著
    CHU Hong-gang;SU Li-hua;GUO Rui-qiang;SUN Bin;JIANG Xia;SUN You-gang
    . 2007, 18(8): 544-547.
    Abstract (1185) PDF (1214)   Knowledge map   Save
    Objective: To determine whether there is an association between the presence of aortic valve calcification(AVC) and carotid artery atherosclerotic disease. Methods: 214 patients with AVC diagnosed by transthoracic echocardiography underwent carotid artery ultrasound at the same time. They were compared with 182 age- and sex-matched persons without AVC who underwent carotid artery ultrasound during the same period. Results: ①Compared with the control group, the AVC group showed a significantly higher prevalence of systolic blood pressure(SBP) and diastolic blood pressure(DBP)[(162±18)mmHg versus (120±14)mmHg, P<0.01; (101±16)mmHg versus (78±12)mmHg, P<0.01). ②IMTs of CCA and ICA in the AVC group were significantly thicker than that in the control group[(1.17±0.18)mm versus (0.90±0.10)mm, P=0.000; (1.06±0.18)mm versus (0.81±0.12)mm, P=0.000, respectively].③Compared with the control group, the AVC group showed a significantly higher prevalence of carotid atherosclerotic plaque(44.39% versus 18.13%, P=0.000). ④The AVC group showed a significantly higher prevalence of carotid stenosis ≥20%(78.50% versus 57.14%, P=0.000), ≥40%(36.45% versus 22.53%, P=0.003), ≥60%(15.42% versus 8.24%, P=0.029), and ≥20%(38.32% versus 22.53%, P=0.001), ≥40%(19.63% versus 9.89%, P=0.007), ≥60%(7.01% versus 1.10%, P=0.004) of bilateral carotid artery. ⑤Vm of CCA and ICA in the AVC group were decreased significantly than that in the control group[(30.26±7.83)cm/s versus (41.25±8.32)cm/s, P=0.000; (35.46±6.85)cm/s versus (47.36±11.35)cm/s, P=0.000]. But PI(1.64±0.48 versus 1.35±0.32, P=0.010; 0.96±0.28 versus 0.85±0.16, P=0.039) and RI(0.78±0.07 versus 0.65±0.06, P=0.000; 0.81±0.11 versus 0.60±0.05, P=0.000) of CCA and ICA in the AVC group were increased significantly than that in the control group. ⑥On multivariate analysis, AVC was the only independent predictor of carotid atherosclerotic disease(stenosis of ≥40%, P=0.004). Conclusions: There is a significant association between the presence of AVC and carotid artery atherosclerotic disease. AVC may be an important marker for atherosclerotic disease of the carotid arteries. Carotid artery high frequency ultrasound should be underwent to the patients with AVC diagnosed by transthoracic echocardiography as a common.
  • 论著摘要
    REN Yun-yun;LI Xiao-tian;CHANG Cai
    . 2007, 18(8): 606-607.
    Abstract (1076) PDF (1206)   Knowledge map   Save
  • 论著
    . 2003, 14(1): 17-20.
    Abstract (1424) PDF (1198)   Knowledge map   Save
    目的:探讨细支气管肺泡细胞癌(BAC)的影像表现并与病理结果作对照研究,提高影像诊断的正确率。材料和方法:回顾性分析40例病理证实为BAC患者的胸部X线、CT及病理资料。结果:单发结节或肿块型21例,实变型13例,弥散结节型6例。单发结节或肿块型BAC周围型18例,中央型3例,主要征象:胸膜牵引征18例(85.7%),血管聚束征18例(85.7%),毛刺征16例(76.2%),分叶征11例(52.3%),支气管征11例(52.3%),空泡征5例(23.8%)。实变型BAC单肺段/叶实变6例,多肺段/叶实变7例,主要征象:含气支气管征9例(100%),蜂房征8例(88.9%),毛玻璃征4例(44.4%),叶间裂膨突3例(33.3%),血管聚束征3例(33.3%)。弥散结节型BAC 6例,主要征象:两肺不对称、不均匀弥漫分布大小不等结节,结节融合倾向6例,结节中心透亮区(空泡征)4例(66.7%),融合结节灶内支气管征2例(33.3%),血管聚束征5例(83.3%),胸膜牵引征5例(83.3%),毛刺征4例(66.7%)。结论:细支气管肺泡细胞癌影像表现复杂,充分认识细支气管肺泡细胞癌的各种征象能提高其影像诊断的准确率。
  • 论著
    . 2003, 14(3): 173-176.
    Abstract (1452) PDF (1176)   Knowledge map   Save
    目的:探讨主动脉壁内血肿(IMH)的电子束CT(EBCT)影像特征及对临床诊治的指导意义。方法:13例经EBCT连续容积增强扫描的主动脉IMH患者,综合分析其EBCT影像特征及临床特点。结果:EBCT所见IMH的直接征象:13例主动脉壁新月形或环形低密度增厚,无内膜片及真、假腔。7例血肿外缘轻度环状强化。血肿CT值60~108Hu。间接征象:穿透性溃疡征9例,钙化内移3例,主动脉壁粥样硬化8例,一侧或双侧胸腔积液7例(2例分别合并叶间裂或心包积液)。并发征象:动脉瘤2例,B型主动脉夹层1例。结论:EBCT是检出主动脉IMH的快速、无创检查方法,可清晰显示IMH的直接、间接征象及并发征象,对临床的诊治有重要的指导意义。
  • 论著
    . 2003, 14(3): 177-180.
    Abstract (1369) PDF (1175)   Knowledge map   Save
    目的:初步探讨MSCT冠状动脉成像的临床应用价值。方法:45例临床诊断或可疑冠心病的患者做MSCT冠状动脉成像检查(回顾性心电门控、0.5s螺旋扫描、心脏分段重建算法和静脉注射对比剂)。在9个心电相位窗上对冠状动脉进行图像重建并分析影像学表现。结果:45例中,左前降支、左回旋支和右冠状动脉重建图像质量最佳的相位窗多数为70%,分别占84.4%,77.8%和66.7%。左冠状动脉主干、左前降支、左回旋支和右冠状动脉显示较好且能满足影像学评价分别占93.3%,80%,60%和42.2%。在心率<60次/分的16例中,左前降支、左回旋支和右冠状动脉显示较好且能满足影像学评价分别占93.8%,75%和62.5%。在心率为60~70次/分的21例中,左前降支、左回旋支和右冠状动脉图像质量较好且能满足影像学评价分别占85.7%,66.7%和42.9%。在心率>70次/分的8例中,左前降支、左回旋支和右冠状动脉图像质量较好且能满足影像学评价分别占37.5%,12.5%和0。在冠状动脉正常或狭窄程度<50%的12例中,二维曲面重建图像显示左前降支、左回旋支和右冠状动脉的长度分别为108±15mm,81±26mm和126±16mm。结论:MSCT在多数情况下能较好地显示冠状动脉,可以作为冠状动脉病变的筛选方法。
  • 论著
    DU Zhong-li;LIU Yu-tao;CHEN Hai-dong;XIAO Wan-hong;SUN Fang;MAO Jun;CHEN Min;LI Wei;HE Hong
    . 2007, 18(4): 272-275.
    Abstract (1928) PDF (1162)   Knowledge map   Save
    Objective: To compare low-dose unenhanced 16-detector helical CT and intravenous urography in the detection of renal and ureteral stones. Methods: Ninty-two patients with suspected neprolithiasis and ureterolithiasis were collected. Low-dose helical CT scans were obtained by using 60mAs(other technical parameters remain same to the standard-dose scan), then it was immediately followed by IVU, to note the cases, location, size, number of calculi and signs of obstruction. Low-dose scans and IVU were compared by using paired χ2-test. Results: In low-dose scan, 81 cases found to have calculi, 53 cases had renal calculi, 59 cases had ureteral calculi, there were 156 stones, 78 cases had pelvicaliectasis and 63 cases had ureteral dilatation, in IVU, 62 cases had calculi, 40 cases had renal calculi, 42 had ureteral calculi, there were 101 stones, 67 cases had pelvicaliectasis and 45 had ureteral dilatation, there were significant differences in cases of calculi, number of calculi and the obstruction between low-dose scan and IVU. Conclusion: Low-dose unenhanced 16-detector helical CT is superior to IVU in detecting renal and ureteral calculi.
  • 论著
    GAO Yu;ZHANG Yong-ping;ZHANG Zhong-xiang;ZHANG Yu-zhen;FENG Yun;LI Yu-hua
    . 2007, 18(7): 506-508.
    Abstract (1469) PDF (1156)   Knowledge map   Save
    Objective: To review the reliability of CT and MRI features of lipoma and lipoblastoma. Materials and Methods: CT and MRI of 35 cases of lipoma and 10 cases of lipoblastoma were retrospectively reviewed. Images were assessed for adipose tissue content, nonadipose component, presence of septa, the thickness of septa, presence of calcification and the growth pattern. Results: Features that suggest lipoblastoma include presence of thick septa, presence of nodular and or globular or nonadipose masslike areas, and decreased percentage of fat composition. Conclusion: CT and MRI features are reliable to distinguish lipoma and lipoblastoma.