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IMAGE INFORMATION VALUE OF VARIATION ANALYSIS VALUE SENSITIVIY ENCHODING (SENSE) USING T2 WEIGHTED TURBO BALANCE FIELD ECHO (BTFE) SEQUENCE IN THE MRCP IN RADIOLOGICAL INSTALLATION SILOAM HOSPITAL SURABAYA 利用t2加权涡轮平衡场回波序列(btfe)在泗水西罗亚医院放射设施MRCP中进行变异分析值敏感性嵌入(sense)的图像信息价值
Pub Date : 2018-07-01 DOI: 10.31983/JIMED.V4I2.3994
Ary Indra Wicaksono, E. Murniati, Siti Masrochah
Background : MRCP is an examination used to evaluate the system billiary, pancreas and gall bladder with channel because of the possible presence of stones, tumors and other diseases. To diagnose the MRCP examination,one sequence in use is T2 weighted Turbo Field Echo Balance (T2W BTFE) which in its parameters No Sensitivity Enchoding (SENSE). The purpose of this study was to determine the Information analysis Anatomical differences with variation of Sensitivity Encoding (SENSE) on T2-weighted sequences BTFE the MRCP examination, And to investigate value Sensitivity Encoding (SENSE) optimal T2-weighted sequences BTFE the MRCP examination. Methods : The method of this research is experimental with approach quasi-experimental design with control. This research is done in Siloam Hospital Surabaya. MRCP image data in the form of axial 40 of the 10 patients with 4 variation of Sensitivity Encoding (SENSE), which are 1.4, 1.6, 1.8, and 2. Assessment of information image data done by 3 respondents. Analysing process done with Friedman test. Results : The results showed that there MRCP image information differences with variation in sensitivity encoding (SENSE) on T2-weighted sequences BTFE with a significance level of p value <0.001. Differences in image information occurs in liver, Gall Blader, Pancreas and CBD (Common Bile Duct). The use value Sensitivity Encoding (SENSE) on T2-weighted sequences for optimal BTFE MRCP is a 1.8 with a mean rank 3.85. Conclusion : The optimal use value Sensitivity Encoding (SENSE) on T2-weighted sequences for optimal BTFE MRCP is a 1.8.
背景:MRCP是由于可能存在结石、肿瘤等疾病而对胆道、胰腺、胆囊等系统进行评估的检查。为了诊断MRCP检查,使用的一个序列是T2加权Turbo Field Echo Balance (T2W BTFE),其参数为No Sensitivity Enchoding (SENSE)。本研究的目的是确定不同灵敏度编码(SENSE)的t2加权序列在MRCP检查中的信息分析解剖差异,并探讨灵敏度编码(SENSE)的最佳t2加权序列在MRCP检查中的价值。方法:采用有对照的准实验设计方法进行实验研究。这项研究是在泗水西罗亚医院完成的。10例患者的MRCP图像数据以轴40的形式呈现,有4个灵敏度编码(SENSE)变异,分别为1.4、1.6、1.8和2。3名受访者对信息图像数据进行评估。分析过程用弗里德曼测试完成。结果:t2加权序列BTFE的MRCP图像信息随灵敏度编码(SENSE)的变化存在差异,显著性水平p值<0.001。肝脏、胆囊、胰腺和总胆管的图像信息存在差异。灵敏度编码(SENSE)对t2加权序列的使用值为1.8,平均秩为3.85。结论:t2加权序列的最优使用价值敏感性编码(SENSE)为1.8。
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引用次数: 0
EFFECT OF RECEIVE BANDWIDTH’S VARIATION TO SIGNAL TO NOISE RATIO (SNR) AND CONTRAST TO NOISE RATIO (CNR) ON MRI EXAMINATION OF CERVICAL WITH T2 WEIGHTED FAST SPIN ECHO SEQUENC HERNIA NUCKLEUS PULPOSUS (HNP) CASE 接收带宽变化对t2加权快速自旋超声序列颈髓核疝(hnp)的信噪比(snr)和比噪比(cnr)的影响
Pub Date : 2018-07-01 DOI: 10.31983/jimed.v4i2.4009
Muhammad Raizal Rais, Bagus Abimanyu, D. Darmini
Background : The received bandwidth parameter is a parameter that can affect the value of SNR and CNR. The use of bandwidth value on the MRI 1.5 Tesla for cervical MRI examination with T2 Weighted Fast Spin Echo sequence axial used a value of 27.87Hz/px. By doing the variation of bandwidth , the quality of SNR and CNR image is different. The purpose of this study is to determine the effect of bandwidth variation on SNR and CNR. To know the optimal value of receive bandwidth variation on cervical MRI examination with T2 Weighted Fast Spin Echo sequence in Herniated Nuckleus Pulposus (HNP) case. Methods : This type of research is qualitative research with experimental approach. This study was conducted using MRI GE 1.5 Tesla at Bethesda Hospital Yogyakarta. Data in the form of 10 images of cervical MRI T2 FSE axial slice of 10 patients with 3 received bandwidth variation (20.83Hz / px, 27.87Hz / px and 31.25Hz / px). To determine SNR and CNR values, Region of Interest (ROI) with size 1mm 2 were placed on Discus Intervertebralis, Cerebrospinal Fluid, Spinal Cord and Ligament Flavum . And to get the average value of the signal then the averageof signal was divided by the standard deviation from the background. The analysis was done by linear regression test and friedman mean rank test . Results : The result of research shows that there is influence between receive bandwidth variation on SNR and CNR cervical. The value of 20,83Hz/px receive bandwidth variation in cervical MRI examination with T2 Weighted Fast Spin Echo sequence result in optimal SNR and CNR value. Conclusion : There was the effect of the receive bandwidth of the SNR and CNR on MRI cervical sequences T2 WI FSE axial. Receive Bandwidth optimum value in MRI cervical T2 WI FSE axial is 20,83Hz/px.
背景信息:接收带宽是一个会影响信噪比和信噪比的参数。在MRI 1.5 Tesla上使用带宽值进行颈椎MRI检查,T2加权快速自旋回波序列轴向使用27.87Hz/px值。由于带宽的变化,信噪比和信噪比图像的质量是不同的。本研究的目的是确定带宽变化对信噪比和信噪比的影响。探讨髓核突出症(HNP)颈椎MRI T2加权快速自旋回波序列接收带宽变化的最佳值。方法:采用实验方法进行定性研究。本研究在日惹Bethesda医院使用MRI GE 1.5 Tesla进行。数据为10例患者的10张颈椎MRI T2 FSE轴位片,其中3例接受带宽变化(20.83Hz / px, 27.87Hz / px和31.25Hz / px)。在铁饼椎间、脑脊液、脊髓和黄韧带上放置1mm2的感兴趣区(ROI)以测定信噪比和CNR值。为了得到信号的平均值然后用信号的平均值除以与背景的标准差。采用线性回归检验和friedman平均秩检验进行分析。结果:研究结果表明,接收带宽的变化对信噪比和信噪比颈有影响。采用T2加权快速自旋回波序列进行颈椎MRI检查时,20,83hz /px的接收带宽变化值可获得最佳的信噪比和CNR值。结论:接收带宽的SNR和CNR对颈椎MRI序列T2 WI FSE轴向有影响。MRI颈椎T2 WI FSE轴位接收带宽最佳值为20,83hz /px。
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引用次数: 1
INFORMATION DIFFERENCES OF CORATAL ANATOMI MAGNETIC RESONANCE IMAGE ANTHOMY MAGNETIC RESONANCE (MRCP) IN T2 FRFSE (FAST RECOVERY FAST SPIN ECHO) SELECTION BETWEEN USE OF ARC WITH NO ARC 冠状动脉解剖磁共振成像(mrcp)在t2 frfse(快速恢复快速自旋回波)选择中使用弧线与不使用弧线之间的信息差异
Pub Date : 2018-07-01 DOI: 10.31983/JIMED.V4I2.4010
Y. Kartikasari, Jeffry Ardiyanto, Ary Lasminar Firdani
Background : MRCP is a biliary tract and pancreatic duct imaging technique, one technique that uses a breath hold. The technique speeds up acquisition time by using the Parallel Imaging ARC method so that it reduces the encoding phase on K-Space to reduce breath hold. Therefore it can increase image sharpness and reduce blurring image. The purpose of this study was to determine the differences in anatomical image information between using ARC and without using ARC on MRCP examination of coronal T2 FRFSE sequence pieces and to find better anatomical image information between using ARC and without using ARC on MRCP examination of FRFSE T2 sequences. Method : The type of research conducted by the author is quantitative research with an experimental approach. This research was carried out with 1.5 T MRI at Santo Borromeus Hospital, Bandung. Data in the form of 16 MRCP anatomical images of coronal chunks of T2 FRFSE sequences from 8 patients using ARC and without using ARC. Scores on the image are carried out in the gallbladder, cystic duct, common hepatic duct, intra-hepatic duct, common bile duct and pancreatic duct using questionnaires to 3 radiology specialists (respondents). The results of the respondents were analyzed using Wilcoxon statistical test to find out the differences in MRCP anatomical information on FR2E T2 sequences between using ARC and without using ARC and to find better anatomical image information from the two sequences seen from the mean rank value. Result : The results showed that there were significant differences in MRCP anatomical image information of coronal T2 FRFSE sequences between the use of ARC and without using ARC with a significance value of <0.05. Based on mean rank results, MRCP information on T2 FRFSE sequence coronal pieces using ARC has a mean rank value of 4.50 while MRCP T2 FRFSE coronal sequence sequences using without ARC have a mean rank value of 0.00, meaning FRFSE T2 sequences using ARC have better image information than FRFSE T2 without using ARC. Conclusion : Suggestion, the parallel imaging technique of the ARC method was applied on the MRCP examination of T2 FRFSE sequences and the data from this study could be used as baseline data to add ARC as the operational standard of the MRCP examination procedure.
背景:MRCP是一种胆道和胰管成像技术,一种使用屏气的技术。该技术利用并行成像ARC方法加快了采集时间,减少了k空间上的编码相位,减少了憋气现象。因此,它可以提高图像的清晰度,减少模糊图像。本研究的目的是确定使用ARC和不使用ARC对冠状T2 FRFSE序列片进行MRCP检查时解剖图像信息的差异,并寻找使用ARC和不使用ARC对FRFSE T2序列进行MRCP检查时更好的解剖图像信息。方法:作者进行的研究类型是定量研究与实验方法。这项研究是在万隆Santo Borromeus医院用1.5 T MRI进行的。数据来自8例使用ARC和未使用ARC的患者的T2 FRFSE序列的冠状块的16幅MRCP解剖图像。通过对3名放射学专家(受访者)的问卷调查,对胆囊、胆囊管、肝总管、肝内管、胆总管和胰管进行图像评分。使用Wilcoxon统计检验对应答者的结果进行分析,找出使用ARC与不使用ARC在FR2E T2序列上MRCP解剖信息的差异,并从平均秩值中找到两组序列更好的解剖图像信息。结果:结果显示,使用ARC与未使用ARC时,冠状T2 FRFSE序列的MRCP解剖图像信息存在显著差异,显著值<0.05。从平均排名结果来看,使用ARC的T2 FRFSE序列冠状片MRCP信息的平均排名值为4.50,而未使用ARC的MRCP T2 FRFSE冠状片MRCP信息的平均排名值为0.00,即使用ARC的FRFSE T2序列的图像信息优于未使用ARC的FRFSE T2序列。结论:建议将ARC方法的平行成像技术应用于T2 FRFSE序列的MRCP检查,本研究数据可作为基线数据,增加ARC作为MRCP检查程序的操作标准。
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引用次数: 0
DESIGN OF MODIFICATION EQUIPMENT TOOLS INVESTIGATION MAGNETIC RESONANCE CHOLANGIOPANCREATOGRAPHY PEDIATRIC PATIENTS IN HOSPITAL SANTO BORROMEUS BANDUNG 磁共振胆管造影在医院小儿患者中的应用
Pub Date : 2018-07-01 DOI: 10.31983/jimed.v4i2.3998
Feni Try Sabdo, F. Fatimah, D. Darmini
Background : On examination MRCP patient pediatric in Radiology Hospital Santo Borromeus using tools made of PVC. But the use of such aids has a deficiency, ie the size is too large so that there is a distance between objects to be checked with body coils that can reducing value of the signal generated. The purpose of this research is to know the design of equipment tools investigation MRCP pediatric examination, difference of image quality and anatomical information resulting from the use of standard hospital aids and modification aids. Methods : This research is a quantitative research with experimental approach to design of modification aids in water phantom and patient pediatric examination MRCP sequence T2 FRFSE axial. The test was performed on image quality that was statistically analyzed by paired T test using SPSS 22. Beside that, the test was also conducted on anatomy information which was assessed by 2 radiologists with qualitative assessment. Results : The results of this study there are significant differences in SNR between the use of standard hospital aids and modification tools with p value 0.001. CNR differences were also significant between the use of standard hospital aids and modification aids with p value 0.001 (p <0.05). Conclusion : The results of image quality and anatomical information showed the best results in the use of tools modifications.
背景:对Santo Borromeus放射医院的MRCP患儿使用PVC制成的工具进行检查。但使用这种辅助装置有一个缺点,即尺寸太大,使被检物体与体线圈之间有一定距离,从而降低了产生的信号值。本研究的目的是了解MRCP儿童检查设备工具的设计,以及使用标准医院辅助设备和改装辅助设备所产生的图像质量和解剖信息的差异。方法:本研究采用实验方法设计水影修饰辅助装置和患儿检查MRCP序列T2 FRFSE轴向进行定量研究。图像质量检验采用SPSS 22进行配对T检验。除此之外,还对解剖信息进行了测试,由2名放射科医师进行定性评估。结果:本研究结果显示,使用标准医院辅助工具和改良工具的信噪比有显著差异,p值为0.001。使用标准医院辅助器具与改良辅助器具的CNR差异也显著,p值为0.001 (p <0.05)。结论:图像质量和解剖信息显示使用工具修饰效果最好。
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引用次数: 0
OPTIMALIZATION OF WINDOW WIDTH AND WINDOW LEVEL ON LUNG WINDOW FOR ANATOMIC INFORMATION CT SCAN THORAX OF LUNG TUMORS CASE IN RSUD TUGUREJO PROVINCE OF CENTRAL JAVA 中爪哇图古列霍省肺肿瘤ct扫描胸腔解剖信息窗宽窗位优化
Pub Date : 2018-07-01 DOI: 10.31983/JIMED.V4I2.3993
S AnggrainiDwi, Rasyid Rasyid, D. Darmini
Background : Settings for Window Width and Window Levels used in CT Scan Thorax tumor cases vary. On Seimens 128 Slice plane there are standard settings for lung window thorax is with Window Width 2200 HU and Window Level -200 HU while according to window width theory is 1000- 2000 HU value range and window level -200--800 HU. The purpose of this research is to know the difference of variation setting Window Width and Window Level on Lung Window and Window Width and Window Level optimum in producing anatomical information CT scan thoraks in case of lung tumor. Method : The type of research conducted in the writing of this final task is quantitative research using experimental approach. Data were collected on 5 patients suspected of lung tumor, then variation of setting window width and window level. The result of variation of window width and window level setting was then evaluated by 2 observers to obtain anatomical information of CT Scan Thorax in lung tumor case then analyzed by using Friedman Test different from spss version 16.0. Result : The result of the research resulted the difference of Window Width and Window Level was assessed from p value <α (0.05). the value of significance p value 0.001 which means there is a difference. Highest mean mean value with value 8.25 in window width 1800 HU and window level -200 HU. The use of the most optimal setting variation is the Window Width 1800 HU and Window Level -200 HU because it can provide anatomical image information of CT Scan Thoraks optimal lung tumor cases where the anatomy of the pulmonary, broncus, trachea, aortic mass, pulmonary and chest lung par clearly visible and bordered on axial pieces.
背景:胸腔肿瘤CT扫描中窗宽和窗位的设置各不相同。在Seimens 128切片平面上,肺窗的标准设置为胸廓窗宽为2200 HU,窗位为-200 HU,而根据窗宽理论,肺窗的取值范围为1000- 2000 HU,窗位为-200- 800 HU。本研究的目的是了解肺窗窗宽度和窗位的变异设置与最佳窗宽和窗位在肺肿瘤CT扫描胸廓产生解剖信息时的差异。方法:在这个最终任务的写作中进行的研究类型是使用实验方法的定量研究。收集5例疑似肺肿瘤患者的资料,分析设置窗宽和窗位的变化情况。然后由2名观察者对窗宽和窗位设置的变化结果进行评估,获得肺肿瘤病例CT扫描胸廓的解剖信息,并使用spss 16.0版不同版本的Friedman Test进行分析。结果:研究结果以p <α(0.05)评价窗宽和窗水平的差异。显著性p值为0.001,表示存在差异。在窗宽1800 HU和窗位-200 HU时,最高平均值为8.25。使用的最佳设置变量为窗宽1800 HU和窗高-200 HU,因为它可以提供CT扫描肺肿瘤的解剖图像信息,其中肺、支气管、气管、主动脉肿块、肺和胸肺的解剖清晰可见,并在轴向片上有边界。
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引用次数: 0
PERFOMANCE TEST OF MRI MACHINES IN THE PROVINCE OF BALI mri机器在巴厘岛的性能测试
Pub Date : 2018-07-01 DOI: 10.31983/JIMED.V4I2.4000
Gusti Bagus Yudhi Jaya Putra Atmaja, G. M. Wibowo, Bagus Abimanyu
Backgroud: The research of performance test of MRI machines were done by doing performance test of nine different parameters in three hospitals in the province of Bali, where in two of these three hospitals are having troubled MRI machines which directly affected the image quality and therefore this research is also aimed to find out the performance of MRI machines in some hospitals in the province of Bali and intended as a baseline data if there will another test. Methods: This research is a quantitative study with survey approach. The tools and materials for this research were three MRI machines, which was consisted of two 1,5 Tesla machines and a 0,3 Tesla machine, phantom ACR, and MRI head coil. The data were collected by doing nine MRI performance testing procedures with ACR (2015) as a guideline and then the data were analyzed using international standards issued by ACR (2015). Results: Visual checklist test result of all the hospitals get 12 pass every day from the first day to the twentieth day. SNR test in Badung Regional General Hospital obtain measurement results of 268.17 and in The Board Of Tabanan General Hospital at 15.78 and at Sanglah Central General Hospital of 2.4. To test the artifact analysis only in The Board Of Tabanan General Hospital only found one type of artifact is the artifact geometric distortion. In testing the high contrast resolution in Sanglah Central General Hospital and Badung Regional General Hospital get the same result, namely insert a separate resolution of up to a third group, and the The Board Of Tabanan General Hospital insert a separate resolution to the second group. The test results in low contrast resolution Sanglah Central General Hospital and Badung Regional General Hospital get the same result, namely that there are 10 spokes are visible, then the The Board Of Tabanan General Hospital number of spokes that appear are 9 spokes. In testing the slice thickness accuracy in Sanglah Central General Hospital get the standard deviation of measurement of 5.12mm and in Badung Regional General Hospital get the standard deviation and the measurement of 0.64mm in The Board Of Tabanan General Hospital get the standard deviation of measurement of 0.48mm. Results of the geometric accuracy test in The Board Of Tabanan General Hospital has a difference measurement of 4.2mm X axis, Y-axis of 1.3mm, and has no difference in the Z-axis, in Badung Regional General Hospital has a difference of X-axis measurement of -3.1mm, have no difference in the Y axis the Z axis of 2mm, in Sanglah Central General Hospital has a difference measurement of 1.36mm X axis, Y-axis and Z-axis of 0.39mm for -3.53mm. The test results slice position accuracy in Sanglah Central General Hospital get the standard deviation measurements for -1.33mm, in The Board Of Tabanan General Hospital of 0.85mm, and in Badung Regional General Hospital of -0.3mm. For the test setup and table position accuracy throughout the hospital to get the same measuremen
背景:MRI机器性能测试的研究是通过在巴厘岛省的三家医院进行九种不同参数的性能测试来完成的,这三家医院中的两家都有问题的MRI机器,直接影响了图像质量,因此本研究也旨在找出巴厘岛省一些医院的MRI机器的性能,并打算作为基线数据,如果有另一个测试。方法:采用问卷调查法进行定量研究。本研究使用的工具和材料为3台核磁共振成像仪(两台1,5 Tesla和一台0,3 Tesla)、幻影ACR和MRI头线圈。以ACR(2015)为指导,通过9个MRI性能测试程序收集数据,然后使用ACR(2015)发布的国际标准对数据进行分析。结果:自第1天至第20天,各医院视觉检查表检测结果每天通过12次。巴东地区总医院的信噪比测试的测量结果为268.17,塔巴南总医院董事会的信噪比为15.78,桑格拉中心总医院的信噪比为2.4。仅在塔巴南总医院的板检中发现一种类型的人工制品是几何畸变的人工制品。在桑格拉中央总医院和巴东地区总医院测试高对比度分辨率时,得到了相同的结果,即插入最多第三组的单独分辨率,塔巴南总医院董事会在第二组插入单独分辨率。在低对比度分辨率下Sanglah Central General Hospital和Badung Regional General Hospital的测试结果相同,即有10条辐条可见,那么Tabanan Board General Hospital出现的辐条数是9条。桑拉市中心总医院对切片厚度精度的测量标准差为5.12mm,巴东地区总医院对切片厚度精度的测量标准差为0.64mm,塔巴南市总医院对切片厚度精度的测量标准差为0.48mm。结果塔巴南总医院的几何精度检测结果在X轴差值为4.2mm, Y轴差值为1.3mm, Z轴差值无差异,在巴东地区总医院的X轴差值为-3.1mm, Y轴差值为- Z轴差值为2mm,在桑格拉中心总医院的X轴差值为1.36mm, Y轴差值为-3.53mm, Z轴差值为0.39mm。测试结果:桑格拉中心总医院切片定位精度的标准差测量值为-1.33mm,塔巴南总医院为0.85mm,巴东地区总医院为-0.3mm。对于测试设置和工作台位置的精度在整个医院得到相同的测量是5mm。结论:在测试的9个参数中,所有医院只有高对比度分辨率测试、低对比度分辨率测试、切片位置精度测试、设置和工作台位置精度测试4个参数符合国际标准,而所有医院在几何精度测试中均未达到国际标准。有2家医院的信噪比测试不符合国际标准,1家医院的伪影分析测试和切片厚度精度测试不符合国际标准。
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引用次数: 0
DIFFERENCES OFACCELERATION FACTOR APPLICATION TOWARD CHARACTERISTICS OF DIAGNOSTIC IMAGE T2WI FSE IN MRI LUMBAL HERNIATED NUCLEUS PULOSUS (HNP)CASE 磁共振腰椎间盘突出症(hnp)加速因子应用对诊断影像特征的差异
Pub Date : 2018-07-01 DOI: 10.31983/JIMED.V4I2.4005
I. Maulidya, G. M. Wibowo, E. Murniati
Background : Patients with HNP cases have a bigger chance to do a movement during MRI examination, and it causes poor MRI image. Quick time of MRI examination is needed to produce an optimal image. The technique of parallel imaging is a technique that can increase the speed of MRI data acquisition by passing through several lines of phase encoding in k-space. The GRAPPA technique is one of the methods used to reconstruct data on MRI parallel imaging techniques with better overall image quality. The technique of parallel imaging has a special parameter called acceleration factor. Acceleration factor (R-factor) will affect scan time. The purpose of this research is to know the difference of diagnostic image characteristic which is resulted in applying acceleration factor 2, 3 and 4 in parallel imaging of GRAPPA method and know the optimal acceleration factor to obtain MRI image of lumbar HNP case. Methods : This research type is quantitative research with descriptive approach. The study was conducted by MRI Siemens 3 T in RSUD Dr. Soedono Madiun. The data were 30 MRI images of lumbar sagittal of HNP cases on T2WI FSE with acceleration factor 2, 3 and 4 GRAPPA methods Result : The results of this study indicate that there are differences in diagnostic image characteristics in the application of acceleration factor 2 and 4, 3 and 4 with VGA test. Acceleration factor value optimal with VGC test known is acceleration factor 2 and 3 Conclusion : Based on the result there was differencediagnostic image characteristics of MRI Lumbar in sagital plane Fast Spin Echo (FSE)sequence with variation acceleration factor 2, 3 and 4 parallel imaging GRAPPA methode in case Herniated Nucleus Pulposus (HN0). Optimal value of variation acceleration factor value for MRI Lumbar examination of Heniated Nucleus Pulposus (HNP) is 2 dan 3.
背景:HNP患者在MRI检查时有较大的机会做运动,导致MRI图像较差。为了获得最佳图像,需要快速的MRI检查时间。并行成像技术是一种在k空间中通过多行相位编码来提高MRI数据采集速度的技术。GRAPPA技术是MRI并行成像技术中用于数据重建的方法之一,具有较好的整体图像质量。平行成像技术有一个特殊的参数叫做加速度因子。加速因子(r因子)会影响扫描时间。本研究的目的是了解在GRAPPA方法并行成像中应用加速因子2、3、4所导致的诊断图像特征的差异,并了解获得腰椎HNP病例MRI图像的最佳加速因子。方法:本研究为定量研究,采用描述性研究方法。这项研究是通过磁共振西门子3t在RSUD Soedono Madiun博士进行的。结果:本研究结果表明,加速因子2、4、3和4与VGA测试应用加速因子2、4、3和4在诊断HNP病例的影像特征上存在差异。结论:基于此结果,快速自旋回波(FSE)序列与加速因子2、3、4变化的平行成像GRAPPA方法对髓核突出(HN0)的诊断图像特征存在差异。髓核缺失(HNP) MRI腰椎检查变异加速因子值的最佳值为2 ~ 3。
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引用次数: 0
DIFFERENCES IMAGE QUALITY OF SIGNAL TO NOISE RATIO (SNR) IN SENSITIVITY ENCODING (SENSE) APPLIED ON MAGNETIC RESONANCE CHOLANGIOPANCREATOGRAPHY (MRCP) EXAMINATION SEQUENCES TSE T2 CORONAL 磁共振胰胆管造影(mrcp) t2冠状面检查序列的灵敏度编码中信噪比(snr)的图像质量差异
Pub Date : 2018-07-01 DOI: 10.31983/jimed.v4i2.4003
Hengky Saefulloh, Siti Masrochah, F. Fatimah
Background : Magnetic Resonance Cholangiopancreatography (MRCP) is a non invasive imaging examinations, which are used to evaluate the tractus billiaris, pancreatic ducts and gall bladder. In the last decade, one way to lower the scan time is with the method of parallel imaging. Parallel imaging has a basic function is the reduction of the time of the scan, as well as maintain the contrast of the image without the need for a system of higher performance gradients. Reduction of scan time in parallel imaging has some benefits. First, it is very useful for sequences that depends on the scanning time is short as a single breath hold. Second, the overall inspection time can be reduced, especially in patients with complaints of pain are great at certain positions such as pain when lying down, in patients of children or in cases of civil defence emergency. Breath hold itself has the purpose to avoid the image of the blur of movement organs. When breathing there is movement of the thoracic and abdominal organs in the cavum. However, the characteristics of each person has different breath hold. When the patient's breath hold insufficient at the time scanning takes place then the resulting image results become less than optimal and may cause artifacts in the picture. The scanning time on the MRCP examination sequences long enough to cause patients to press the emergency buzzer, this caused the patient to feel less comfortable at the time of the examination to take place, and the resulting examination in repeated from the beginning. Therefore researchers wanted to apply the technique of parallel imaging in examination of MRCP on T2 Coronal because of parallel imaging has benefits that are very useful for sequences that depends on the scanning time is short like a breath hold. Methods : This type of research is research experiments. This research was conducted on MRI 1.5 Tesla in Hospitals Tarakan from Jakarta and carried out in 8 volunteers. The results of the performed image ROI value to get SNR, ROI was performed on the area of the right hepatic duct, left hepatic duct, gall bladder, common bile duct and cystic duct so the obtained average value for signal compared to the ROI on background (standard deviation noise). Data analysis was done by using different test with a test of T-test to tell the difference between the use of SENSE against SNR. Results : The results of the calculation of the value of the average SNR of image sequence, MRCP Sequences TSE T2 Coronal without the SENSE on the anatomy of the right hepatic ductus 54.49; left hepatic ductus 55.54; gall bladder 91.07; the common bile duct 68.94 and cystic duct 60.46. While the value of SNR in image sequence, MRCP Sequences TSE T2 Coronal TSE that use the SENSE on the anatomy of the right hepatic duct 45.77; left duct heatic 46.88; gall bladder 77.87; the common bile duct 60.72 and cystic duct 50.58 Scan time difference that is the average value of the scan time on Coronal T2 TSE piece sequences w
背景:磁共振胆管造影(MRCP)是一种用于评估胆管束、胰管和胆囊的无创影像学检查。近十年来,降低扫描时间的一种方法是采用并行成像方法。并行成像的一个基本功能是减少扫描时间,以及保持图像的对比度,而不需要系统的更高性能梯度。在并行成像中减少扫描时间有一些好处。首先,它对于依赖于扫描时间短如单次屏气的序列非常有用。第二,可以减少整体检查时间,特别是在某些位置疼痛严重的患者,如躺着时疼痛,儿童患者或民防紧急情况下。屏气本身就有避免运动器官形象模糊的目的。呼吸时,胸腔和腹部器官在腔内运动。然而,每个人的特点有不同的屏气。当患者在扫描时屏气不足时,所得到的图像结果就会变得不那么理想,并可能导致图像中的伪影。MRCP检查序列上的扫描时间足够长,导致患者按下紧急蜂鸣器,这导致患者在检查发生时感觉不太舒服,由此导致的检查从一开始就重复进行。因此,研究人员希望将平行成像技术应用于T2冠状位的MRCP检查,因为平行成像对依赖于扫描时间短(如屏息)的序列非常有用。方法:这类研究为研究性实验。本研究在雅加达塔拉干医院的MRI 1.5特斯拉上进行,并在8名志愿者中进行。所得图像ROI值为获得信噪比,分别对右肝管、左肝管、胆囊、胆总管和胆囊管区域进行ROI,将所得信号的平均值与背景(标准差噪声)下的ROI进行比较。数据分析采用不同的检验,采用t检验来区分使用SENSE和信噪比之间的差异。结果:计算图像序列的平均信噪比值,MRCP序列TSE T2冠状面不带SENSE对右肝管的解剖结果为54.49;左肝管55.54;胆囊91.07;总胆管68.94,胆囊管60.46。而图像序列的信噪比值,MRCP序列的TSE T2冠状位TSE对右肝管解剖的意义为45.77;左管肝46.88;胆囊77.87;总胆管60.72,胆囊管50.58扫描时差,即无SENSE的冠状T2 TSE片序列1分32秒的扫描时间与有SENSE的冠状T2 TSE片序列49秒的扫描时间的平均值,或在MRCP T2冠状面与无SENSE的序列TSE标准相比减少46.7%。结论:根据本研究结果说明,MRCP检查T2冠状位TSE序列中SENSE与SNR的使用存在差异,其总体显著性最高水平p值< 0.05。与不使用SENSE相比,使用SENSE后信噪比下降,但扫描时间缩短46.7%
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引用次数: 0
THE ANALYSIS OF RADIATION DOSE ON REPRODUCTIVE ORGAN IN ANTEROPOSTERIOR PROJECTION ABDOMEN RADIOGRAPHY USING 10 kV RULES METHOD 应用10kv规则法分析腹部正位投影摄影中生殖器官的辐射剂量
Pub Date : 1900-01-01 DOI: 10.31983/JIMED.V5I1.4012
B. D. Handoko, Mohammad Alif Nurfathoni, Akhmad Haris Sulistyadi
Background: Abdomen radiography is a radiographic examination procedure in the abdominal area to show abnormalities that occur in the tractus digestivus / gastrointestinal. Radiographic examination of the abdomen is directly related to the reproductive organs that are sensitive to radiation. The purpose of this study was to find out the optimization technique of AP projection radiographic Abdomen examination with the 10 kV rule method, knowing the radiation dose received by the reproductive organs using the 10 kV rule method, knowing the quality of radiographs produced on AP projection radiographic examination using the 10 kV rule method. Methods : Jenis penelitian yang digunakan adalah penelitian Pre Eksperimental yaitu dengan melakukan pengukuran terhadap kualitas hasil radiograf dengan metode kenaikan 10 kVrule disertai penurunan mAs 50%. Pengukuran dosis radiasi dengan menggunakan alat ukur radiasi ray safe X-2, sedangkan untuk pengukuran kualitas dilakukan secara kuantitatif nilai pixel value dan visual citra. Method: The type of research used in this study is Pre Experimental research, namely by measuring the quality of the results of the radiograph by increasing the method of 10 kV rule with a decrease of 50% mAs. Results : The results of radiation dose measurements received by the AP projection reproductive organs with standard exposure factors (1) are kV 70 and mAs 32 is 8.33 mGy. In the exposure factor (2) kV 80 and mAs 16 is 5.50 mGy. Exposure factor (3) with kV 90 and mAs 8 radiation doses received at reproductive organs are 3.47 mGy and exposure factor (4) with kV 90 and mAs 4 produce radiation doses of 1.18 mGy. The highest contrast value (Δ pixel value) of each exposure factor is the exposure factor (2) kV 80 mAs 16, then the exposure factor (3) kV 90 mAs 8. The lowest Contrast value ((pixel value) is the exposure factor. (4) kV 100 mAs 4. The results of radiographic quality assessment on Abdomen examination of AP projection show that by visual assessment of radiographic specialists showed that the exposure factor that produced the most optimal Abdomen radiography was exposure factor 3 at kV 90 and mAs 8. Conclusion : Optimal abdominal radiographic examination with a low radiation dose can use exposure factors of kV 80 mAs 16 and kV 90 mAs 8.
背景:腹部x线摄影是一种在腹部区域显示消化道/胃肠道异常的影像学检查程序。腹部放射检查与生殖器官直接相关,生殖器官对辐射敏感。本研究的目的是探讨10kv规则法AP投影x线摄影腹部检查的优化技术,了解10kv规则法生殖器官接受的辐射剂量,了解10kv规则法AP投影x线摄影检查所产生的x线片质量。方法:实验前期:yitu dengan melakukan penguins terhadap kualitas hasil radigragradengan metekenaikan 10 kVrule disertai penuran mAs 50%。企鹅放射学X-2射线安全,企鹅放射学X-2射线安全,企鹅放射学X-2射线安全。方法:本研究采用的研究类型为Pre - Experimental研究,即通过增加10kv规则的方法,降低50% ma来测量x线片结果的质量。结果:AP投射生殖器官在标准暴露因子(1)下接受的辐射剂量测量结果为kV 70, mAs 32为8.33 mGy。在暴露系数(2)中,kV 80和mAs 16为5.50 mGy。kV 90和mmas 8的暴露因子(3)对生殖器官的辐射剂量为3.47 mGy, kV 90和mmas 4的暴露因子(4)对生殖器官的辐射剂量为1.18 mGy。各曝光因子的最高对比度值(Δ像素值)是曝光因子(2)kV 80 mAs 16,其次是曝光因子(3)kV 90 mAs 8。最低对比度值(像素值)是曝光系数。(4) kV 100mas腹部AP投影检查x线片质量评价结果显示,经影像学专家目视评价,产生最佳腹部x线片的暴露因子为kV 90、mAs 8时的暴露因子3。结论:低辐射剂量的最佳腹部x线检查可采用kV 80mas 16和kV 90mas 8照射因子。
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引用次数: 0
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Jurnal Imejing Diagnostik (JImeD)
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