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   脑灌注成像 在 肿瘤学 分类中 的翻译结果: 查询用时:0.273秒
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脑灌注成像
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  “脑灌注成像”译为未确定词的双语例句
    The Application Study of Cerebral MR Perfusion Imaging on Radiation-induced Injury Following Radiotherapy for Nasopharyngeal Carcinoma
    MR脑灌注成像在鼻咽癌放疗后放射性脑损伤中的应用研究
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    Materials and Methods:MR imaging was performed in a Siemens 1.5T symphony scanner in 30 patients with pathologically proven gliomas by using first pass Gd-DTPA T2*-weighted EPI-FID perfusion sequence followed by conventional imaging.
    材料与方法:采用Siemens symphony 1.5T扫描仪,对30例胶质瘤患者(均经手术后病理证实)进行常规平扫加增强MR扫描同时使用T2* 敏感的平面回波自由衰减序列(EPI-FID)进行快速团注顺磁性对比剂的MR脑灌注成像扫描。
短句来源
    CT perfusion imaging of the brain is playing an increasingly important role in the clinical application with the development of multislice CT technology.
    随着多层螺旋CT的发展,CT脑灌注成像技术显示了重要的临床应用价值。
短句来源
    In this article,the clinical use of CT perfusion imaging in the brain infarction and brain tumors was systematically reviewd based on the description of the basic principles. A CT protocol in the diagnose of ischemic brain disease was introduced and the safety aspects of CT perfusion imaging were also taken into consideration.
    本文在介绍CT脑灌注成像原理的基础上,对CT脑灌注在脑梗死及脑肿瘤方面的应用进行了回顾,并在介绍脑缺血CT诊断方案的同时提出了CT脑灌注成像的安全性问题。
短句来源
    Conclusion: EPI is a technical with ultra-fast imaging and high temporal resolution, so MR perfusion imaging can become an important tool for the diagnosis of brain lesions.
    结论:EPI技术具有瞬时成像、时间分辨率高的优点,脑灌注成像成为诊断脑部疾病的一个重要工具。
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  cerebral perfusion imaging
CT offers a number of practical advantages over other cerebral perfusion imaging methods, including its wide availability.
      
A number of techniques are available for cerebral perfusion imaging.
      


CT perfusion imaging of the brain is playing an increasingly important role in the clinical application with the development of multislice CT technology.In this article,the clinical use of CT perfusion imaging in the brain infarction and brain tumors was systematically reviewd based on the description of the basic principles.A CT protocol in the diagnose of ischemic brain disease was introduced and the safety aspects of CT perfusion imaging were also taken into consideration.

随着多层螺旋CT的发展,CT脑灌注成像技术显示了重要的临床应用价值。本文在介绍CT脑灌注成像原理的基础上,对CT脑灌注在脑梗死及脑肿瘤方面的应用进行了回顾,并在介绍脑缺血CT诊断方案的同时提出了CT脑灌注成像的安全性问题。

Objective:To determine the utility of Echo Planar Imaging (EPI) in the MR diagnosis of brain tumors. Methods: Totally 53 cases were studied including glioma (n=23), ependymoma (n=1), metastases (n=12), meningioma (n=4), hemangioblastoma (n=4), carvernous hemangioma (n=3), brain inflammation (n=4) , radioation necrosis (n=2). Conventional MR and perfusion weighted imagings were performed in all patients. Using normal white matter in the contralateral hemisphere as a reference, the rCBV was calculated for each...

Objective:To determine the utility of Echo Planar Imaging (EPI) in the MR diagnosis of brain tumors. Methods: Totally 53 cases were studied including glioma (n=23), ependymoma (n=1), metastases (n=12), meningioma (n=4), hemangioblastoma (n=4), carvernous hemangioma (n=3), brain inflammation (n=4) , radioation necrosis (n=2). Conventional MR and perfusion weighted imagings were performed in all patients. Using normal white matter in the contralateral hemisphere as a reference, the rCBV was calculated for each lesion. Results: The rCBV in high grade gliomas (n=13) varied from 1. 77 to 35. 7, with a mean of 9. 38±6. 52, and in the low-grade group (n=10) varied from 1. 17 to 4. 33, with a mean of 2. 41±1. 24. This difference in rCBV was statistically significant. High perfusion areas were found in hemangioblastoma, glioma, metastases, meningioma. Low- and iso-perfusion was seen in the inflammation and radiation necrosis. The highest rCBV was seen in hemangioblastoma. Conclusion: EPI is a technical with ultra-fast imaging and high temporal resolution, so MR perfusion imaging can become an important tool for the diagnosis of brain lesions.

目的:探讨回波平面成像(EPI)技术在脑肿瘤核磁(MR)灌注中的应用价值。方法:选择脑肿瘤患者 53例,其中胶质瘤(包括术后复发)23例,室管膜瘤1例,转移瘤12例,脑膜瘤4例,血管母细胞瘤4例,海绵状血管瘤3例,脑炎4例,脑放射性坏死2例。所有患者均行常规MR及MR灌注成像检查。以对侧对应脑白质为参照, 计算各病变相对脑血容积(rCBV)。结果:高级别胶质瘤(13例)的rCBV值为9.38±6.52(1.77-35.70),低级别胶质瘤(10例)的rCBV值为2.41±1.24(1.17-4.33),二者差异有统计学意义(t=2.56,P=0.018)。血管母细胞瘤、胶质瘤、转移瘤、脑膜瘤及室管膜瘤均显示高灌注,而脑炎、脑放射性坏死表现低/等灌注。其中,血管母细胞瘤rCBV值最高。结论:EPI技术具有瞬时成像、时间分辨率高的优点,脑灌注成像成为诊断脑部疾病的一个重要工具。

Objective To study the potential of multi-slice spiral CT perfusion imaging in the assessment of cerebral neoplasms.Methods Multi-slice helical CT perfusion imaging was performed in 38 patients with cerebral tumors.The perfusion imaging of the tumor was carried out by cine scan technique (ls/1 rotation) with slice thickness 5 mm/4i,reconstructed slice thickness 10 mm/2i.Contrast injection was done by using 50 ml nonionic contrast agent(300 mg I/ml),at a flow rate of 3.5 ml/s with a power injector,and 5 seconds...

Objective To study the potential of multi-slice spiral CT perfusion imaging in the assessment of cerebral neoplasms.Methods Multi-slice helical CT perfusion imaging was performed in 38 patients with cerebral tumors.The perfusion imaging of the tumor was carried out by cine scan technique (ls/1 rotation) with slice thickness 5 mm/4i,reconstructed slice thickness 10 mm/2i.Contrast injection was done by using 50 ml nonionic contrast agent(300 mg I/ml),at a flow rate of 3.5 ml/s with a power injector,and 5 seconds delay,and data acquisition lasted for 45 seconds.The scanning images were processed in ADW 4.0 workstation.BF、BV、PS values of tumors were calculated and statistically analysed. Results 38 patients with cerebral neoplasms included 9 cases of gradeⅠ—Ⅱgliomas(group 1),10 cases of gradeⅢ—Ⅳgliomas (group 2),9 eases of metastases (group 3)and 10 cases of meningiomas (group 4).All raw data was transformed to square root so as to be consistent with normal distribution.BF~(1/2) values for groupl to group 4 were (5.99±1.03)、(7.55±1.57)、(7.72±2.02 )、(11.40±2.13)ml·rain~(-1)·kg~(-1).The differences in BF~(1/2) were statistically significant between group 1 and group 2,between group 1 and group 3,between group 1 and group 4,between group 2 and group 4,between group 3 and group 4(t_(1,2)=6.89,t_(1,3)=4.59,t_(1,4)=11.03,t_(2.4)=10.58,t_(3,4)=7.65,P<0.05),and there was no statistically significant difference between group 2 and group 3(t_(2.3)=1.17,P>0.05);BF~(1/2) values for groupl to group 4 were (1.01±0.19)、(1.42±0.38)、(1.25±0.33)、(1.60±0.24)ml·kg~(-1).The differences in BF~(1/2) were statistically significant between every two groups (t_(1,2)=7.15,t_(1.3)=3.71, t_(1.4)=5.93,t_(2.3)=2.94,t_(2,4)=2.72,t_(3.4)=4.46,P<0.05 );PS~(1/2) values for groupl to group 4 were (1.70±0.37)、(3.63±0.95)、(4.29±1.30)、(5.69±1.03)ml·min~(-1)·kg~(-2).The differences in PS~(1/2) were statistically significant between every two groups(t_(1.2)=11.53,t_(1.3)=10.61,t_(1.4)=16.77,t_(2.3)=3.69, t_(2,4)=9.94,t_(3,4)=5.52,P<0.05).Conclusion Multi-slice helical CT perfusion imaging is very useful to evaluate tumor vessels of cerebral neoplasmas and it can provide information of incremental benefit in diagnosis,in staging of tumor grade,in the distinction of benign from maglignant cerebral neoplasmas and in differentiating intracerebral neoplasmas from extracerebral neoplasmas.

目的运用多层螺旋CT(MSCT)获取脑肿瘤的灌注图像,评估CT灌注成像对脑肿瘤的诊断价值。方法对38例脑肿瘤患者行MSCT灌注成像,采用电影模式(1 s/周),扫描层厚5 mm,共4层,80 kV,200 mA,重组层厚10 mm,共2层。采用高压注射器注射非离子型碘对比剂50 ml (300 mg I/ml),流率3.5 ml/s,延迟5 s,数据采集45 s。38例脑肿瘤包括9例Ⅰ~Ⅱ级星形细胞胶质瘤(组1),10例Ⅲ~Ⅳ级星形细胞胶质瘤(组2),9例转移瘤(组3),10例脑膜瘤(组4)。分别测量38例脑肿瘤的血流量(BF)、血容积(BV)、表面通透性(PS),并进行统计学分析。结果组1~4的(BF)~(1/2)分别为(5.99±1.03)、(7.55±1.57)、(7.72±2.02)、(11.40±2.13)ml·min~(-1)·kg~(-1);组1与组2比较t=6.89,组1与组3比较t=4.59,组1与组4比较t=11.03,组2与组4比较t=10.58,组3与组4比较t=7.65,P值均<0.05;组2与组3比较t=1.17,P>0.05。组1~4的(BV)~(1/2)分别为(1.01±0.1...

目的运用多层螺旋CT(MSCT)获取脑肿瘤的灌注图像,评估CT灌注成像对脑肿瘤的诊断价值。方法对38例脑肿瘤患者行MSCT灌注成像,采用电影模式(1 s/周),扫描层厚5 mm,共4层,80 kV,200 mA,重组层厚10 mm,共2层。采用高压注射器注射非离子型碘对比剂50 ml (300 mg I/ml),流率3.5 ml/s,延迟5 s,数据采集45 s。38例脑肿瘤包括9例Ⅰ~Ⅱ级星形细胞胶质瘤(组1),10例Ⅲ~Ⅳ级星形细胞胶质瘤(组2),9例转移瘤(组3),10例脑膜瘤(组4)。分别测量38例脑肿瘤的血流量(BF)、血容积(BV)、表面通透性(PS),并进行统计学分析。结果组1~4的(BF)~(1/2)分别为(5.99±1.03)、(7.55±1.57)、(7.72±2.02)、(11.40±2.13)ml·min~(-1)·kg~(-1);组1与组2比较t=6.89,组1与组3比较t=4.59,组1与组4比较t=11.03,组2与组4比较t=10.58,组3与组4比较t=7.65,P值均<0.05;组2与组3比较t=1.17,P>0.05。组1~4的(BV)~(1/2)分别为(1.01±0.19)、(1.42±0.38)、(1.25±0.33)、(1.60±0.24)ml·kg~(-1);组1与组2比较t=7.15,组1与组3比较t=3.71,组1与组4比较t=5.93,组2与组3比较t=2.94,组2与组4比较t=2.72,组3与组4比较t=4.46,P值均<0.05。组1~4的(PS)~(1/2)分别为(1.70±0.37)、(3.63±0.95)、(4.29±1.30)、(5.69±1.03)ml·min~(-1)·kg~(-1);组1与组2比较t=11.53,组1与组3比较t=10.61,组1与组4比较t=16.77,组2与组3比较t=3.69,组2与组4比较t=9.94,组3与组4比较t=5.52,P值均<0.05。结论MSCT脑灌注成像能科学地量化脑肿瘤的血液动力学改变,并有助于肿瘤的术前分级、原发与转移性恶性肿瘤的判断以及脑内与脑外肿瘤的鉴别诊断。

 
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