scholarly journals Analisis Informasi Citra Anatomi Fase Late Artery dengan Variasi Time Scan Delay pada Pemeriksaan MSCT Abdomen

2017 ◽  
Vol 3 (1) ◽  
pp. 213-219
Author(s):  
Bagus Abimanyu ◽  
Luthfi Rusyadi ◽  
Taufiq Taufiq
Keyword(s):  
Abdominal Mass ◽  
Late Phase ◽  
Optimal Time ◽  
Arterial Phase ◽  
P Value ◽  
Outer Cortex ◽  
Image Information ◽  
Anatomical Image ◽  
Time Scan ◽  
Delay Variation

Background: MSCT Abdomen late arterial phase is a radiological examination to evaluated enhancement in hypervascular lesions, stomach, bowel, pancreas parenchyma, spleen and kidney outer cortex. All the structures get bloodsupply of the artery will show an optimal increase (Smithuis, 2014). Smithuis (2014) used time scan delay 15-20 seconds. However in the Abdomen MSCT examination in the late arterial phase of Radiology Hospital Dr. Kanujoso Djatiwibowo Balikpapan used  the different time scan delay. This study aimed to determine differences in contrast enhancement with time scan delay variation of contrast media and to determine the optimal time scan delay in the examination of the Abdomen  MSCT late arterial phase.Methods: The research type is quantitative experimental approach. Data are taken in October and November 2016. The research population of abdomen MSCT examination clinical intra-abdominal mass cases. Total sample are 18 people with a predetermined inclusion criteria. Time scan delay variation used  are 10 seconds, 15 seconds, 20 seconds. evaluated with  respondents the  data is processed with statistic analysis by using different test Kruskal-Wallis followed by post hock Mann-Whitney and to get the most optimal assessment visits of mean rank the Kruskal-Wallis test.Result: The results obtained p value 0,001 (p 0,05), there are  shown significant differences between time scan delay 10 seconds, 15 seconds, 20 seconds at Abdomen  MSCT examination in the late arterial phase of Radiology Dr. Kanujoso Djatiwibowo Balikpapan Hospital. An optimal time scan delay on Abdomen MSCT examination late arterial phase is 10 seconds premises ROI tracking on descenden aorta. From the results of tests conducted using the Kruskal-Wallis test values mean rank at the time scan delay of 10 seconds is 84,75.Conclusison: There is a difference significant anatomical image information between the time scan delay 10 seconds, 15 seconds, 20 seconds. on MSCT Abdomen examination artery in the late phase of Radiology  Dr. Kanujoso Djatiwibowo Balikpapan Hospital. assessment results are tested using the Kruskal-Wallis test followed Mann-Whitney post hock obtained p value 0.001 (p 0.05), meaning that there is a difference between the third anatomical image information  with time scan delay variations. Time delay optimal scan on  Abdomen MSCT examination late artery phase that time scan delay 10 seconds by tracking ROI on descenden aorta. From the results of tests conducted using the Kruskal-Wallis test values mean rank at the time scan delay of 10 seconds 84.75, 56.62 ie 15 seconds, 20 seconds, namely 22.12.

Analisis Informasi Citra Anatomi Vaskular dengan Multi Planar Reformating (MPR) dan Maximum Intensity Projection (MIP) pada Fase Early Arteri Pemeriksaan MSCT Abdomen

2017 ◽  
Vol 3 (2) ◽  
pp. 240-244
Author(s):  
Ratna Istiningrum ◽  
Fatimah Fatimah ◽  
Tri Wulanhandarini
Keyword(s):  
Maximum Intensity Projection ◽  
Arterial Phase ◽  
P Value ◽  
Post Processing ◽  
Test Analysis ◽  
Vascular Abnormalities ◽  
Kappa Test ◽  
Anatomical Image ◽  
Parametric Statistical Test ◽  
Early Arterial Phase

Background: The development in the field of image reconstruction is growing rapidly along with the development of  CT Scan. In  the early stages of  MSCT abdominal artery is usually found  various kinds of vascular abnormalities such as stenosis, aneurism and others. Post processing image techniques commonly used include MPR and MIP. The purpose of this study is to determine whether there is a difference between MPR and MIP techniques and to know which one is better between the two.Methods: This  research was  quantitative study with experimental approach. The study was conducted at Bhakti Dharma Husada Surabaya Hospital  with 15 samples by performing reconstruction on vascular anatomical image of coronal examination of  abdominal MSCT. Assessment of anatomical information data is done by 2 respondents. Data analysis was done by kappa test followed by Wilcoxon sign rank test.Result : The results showed the difference between the post-processing of MIP and MPR on the coronal stages of the early arterial phase of the abdominal MSCT examination, based on the results of  non-parametric statistical test analysis (Wilcoxon) showed  a significant value of p value = 0.001. The result of MIP mean rank value (8,46) is higher than the mean rank value of MPR (1,50), it can be known that post proceeding MIP technique on coronal phase cuts early arterial examination of abdominal MSCT produces better anatomical image information.Conclusion: On examination of abdominal MSCT in the early arterial phase should be at the time of processing the image is also done by using post-processing MIP because more clearly than the MPR.

scholarly journals ANALISIS INFORMASI CITRA ANATOMI MSCT THORAX DENGAN KASUS EFUSI PLEURA KANKER PARU PADA WINDOW MEDIASTINUM POST KONTRAS MENGGUNAKAN VARIASI NILAI WINDOW WIDTH

2020 ◽  
Vol 6 (1) ◽  
pp. 28-35
Author(s):  
Tri Puji Hastuti ◽  
Yeti Kartikasari ◽  
Bagus Abimanyu ◽  
Nanang Sulaksono
Keyword(s):  
Lung Cancer ◽  
Pleural Effusion ◽  
P Value ◽  
Post Contrast ◽  
Image Information ◽  
Significance Level ◽  
Window Width ◽  
Quasi Experimental ◽  
Anatomical Image ◽  
Anatomical Information

Background: Malignancy of lung cancer is the biggest cause of pleural effusion. To diagnose lung cancer pleural effusion, a thorax MSCT can be examined. The MSCT parameter that affects image contrast is window width. The purpose of this study was to determine the differences in the anatomical information of thorax MSCT images in the post contrast mediastinal window to the use of window width range 350-600 HU values in cases of lung cancer pleural effusion, and to determine the appropriate window width value to obtain optimal anatomic image information on Thorax MSCT in cases of lung cancer pleural effusion.Methods: This type of research is quasi experimental. The research was conducted at the Radiology Installation of the Dr. Moewardi Hospital. The data were 60 images of the post contrast mediastinal window thorax MSCT axial slice from 10 patients with 6 window width variations (350 HU, 400 HU, 450 HU, 500 HU, 550 HU, 600 HU). An image assessment was conducted by 3 respondents regarding the resulting of 5 anatomical information. Data analysis used Friedman statistical test.Results: The results showed that there was a difference in the anatomical information of the thorax MSCT in the post contrast mediastinal window to the window width variation in cases of lung cancer pleural effusion with a significance level of p value 0,000 (ρ 0.05). Differences in anatomical image information occur in the anatomy of the aorta, limits of pleural effusion with lesions and clarity of lesions, where as there is no difference in anatomy of the right and left primary bronchus. The optimal use of the window width value for thorax MSCT in the post contrast mediastinal window cases of lung cancer pleural effusion is WW 350 HU with a rank value of 4.61.Conclusions: This study shows that the use of 350 HU window width produces better anatomical image information than the use of other window widths in the case of pleural effusion of lung cancer.

scholarly journals Analisis Informasi Citra Anatomi Antara Penggunaan Aplikasi Constance Level Appearance (CLEAR) dan Non CLEAR Pada Pemeriksaan MRI Cervical Irisan Sagital T2WI FSE Kasus HNP

2015 ◽  
Vol 1 (2) ◽  
pp. 82-85
Author(s):  
Dea Febri Mardiyanti ◽  
Sugiyanto Sugiyanto ◽  
Yeti Kartikasari
Keyword(s):  
Quantitative Research ◽  
Experimental Approach ◽  
Wilcoxon Test ◽  
Rank Test ◽  
P Value ◽  
Image Information ◽  
Mri Examination ◽  
Anatomical Image

Background: This study aims to determine the anatomical image information between using CLEAR aplication and without CLEAR (Non CLEAR) aplication on cervical MRI examination with T2WI FSE sagital HNP case and to determine which is the best image between using CLEAR aplication and Non CLEAR aplication on cervical MRI examination with T2WI FSE sagital HNP case.Methods: This research was a quantitative research with an experimental approach Subjects of this study were eight patients in Siloam Lippo Village Hospital. Images resulted was assessed by radiology physician using questionnairs. Data were analyzed using Wilcoxon test to determine differences of image information and using mean rank test to determine the best image between using CLEAR application and without CLEAR aplication.Results: This study showed that there were differences anatomical image information between using CLEAR application and without CLEAR aplication on cervical MRI examination with T2WI FSE sagital HNP case, with p = 0,000 (p value 0,05). Cervical MRI examination with CLEAR aplication T2WI FSE produced the best image with the sum of the rank was 300,00 on the negative rank which showed that the image information without CLEAR aplication T2WI FSE lower than  image information with CLEAR aplication T2WI FSE.Conclusion: There were differences the anatomical image information between using CLEAR application and without CLEAR aplication on cervical MRI examination with T2WI FSE sagital HNP case.

scholarly journals Noninvasive Diagnosis of Hepatocellular Carcinoma on Sonazoid-Enhanced US: Value of the Kupffer Phase

Diagnostics ◽  
2022 ◽  
Vol 12 (1) ◽  
pp. 141
Author(s):  
Hiroshi Takahashi ◽  
Katsutoshi Sugimoto ◽  
Naohisa Kamiyama ◽  
Kentaro Sakamaki ◽  
Tatsuya Kakegawa ◽  
...  
Keyword(s):  
Hepatocellular Carcinoma ◽  
Diagnostic Performance ◽  
Late Phase ◽  
Imaging Feature ◽  
Arterial Phase ◽  
Liver Imaging ◽  
Noninvasive Diagnosis ◽  
Contrast Enhanced ◽  
Treatment Naïve ◽  
Hepatic Lesions

The aim of this study was to compare the diagnostic performance of Contrast-Enhanced US Liver Imaging Reporting and Data System (CEUS LI-RADS) version 2017, which includes portal- and late-phase washout as a major imaging feature, with that of modified CEUS LI-RADS, which includes Kupffer-phase findings as a major imaging feature. Participants at risk of hepatocellular carcinoma (HCC) with treatment-naïve hepatic lesions (≥1 cm) were recruited and underwent Sonazoid-enhanced US. Arterial phase hyperenhancement (APHE), washout time, and echogenicity in the Kupffer phase were evaluated using both criteria. The diagnostic performance of both criteria was analyzed using the McNemar test. The evaluation was performed on 102 participants with 102 lesions (HCCs (n = 52), non-HCC malignancies (n = 36), and benign (n = 14)). Among 52 HCCs, non-rim APHE was observed in 92.3% (48 of 52). By 5 min, 73.1% (38 of 52) of HCCs showed mild washout, while by 10 min or in the Kupffer phase, 90.4% (47 of 52) of HCCs showed hypoenhancement. The sensitivity (67.3%; 35 of 52; 95% CI: 52.9%, 79.7%) of modified CEUS LI-RADS criteria was higher than that of CEUS LI-RADS criteria (51.9%; 27 of 52; 95% CI: 37.6%, 66.0%) (p = 0.0047). In conclusion, non-rim APHE with hypoenhancement in the Kupffer phase on Sonazoid-enhanced US is a feasible criterion for diagnosing HCC.

Tips and Tricks in Contrast-Enhanced Ultrasound (CEUS) for the Characterization and Detection of Liver Malignancies

2019 ◽  
Vol 40 (04) ◽  
pp. 404-424 ◽  
Author(s):  
Barbara Schellhaas ◽  
Deike Strobel
Keyword(s):  
Liver Cirrhosis ◽  
Contrast Enhancement ◽  
Late Phase ◽  
Therapeutic Monitoring ◽  
Arterial Phase ◽  
Focal Liver Lesions ◽  
Liver Lesions ◽  
Contrast Enhanced Ultrasound ◽  
Liver Malignancies ◽  
Contrast Enhanced

AbstractContrast-enhanced ultrasound (CEUS) has a high diagnostic accuracy in the assessment of focal liver lesions. Clinical context (presence of liver cirrhosis, history of other malignancy versus incidental finding) is crucial for the correct interpretation of CEUS findings. CEUS has to be preceded by structured anamnesis and clinical examination as well as accurate B-mode sonography. Metastases are the most common malignant liver lesions in a non-cirrhotic liver. According to their contrast enhancement in the arterial phase, metastases are categorized as hyper- and hypo-vascular metastases. A common feature of all metastatic lesions is washout of the contrast agent in the portal venous or late phase. In the context of liver cirrhosis, > 95 % of focal liver lesions are hepatocellular carcinomas (HCCs). HCCs typically show arterial phase hyperenhancement, followed by mild and gradual contrast washout occurring very late in the late phase. For intrahepatic cholangiocellular carcinoma (ICC), the pattern of contrast enhancement in the arterial phase can vary. However, all ICCs typically show early and pronounced washout. Other liver malignancies like lymphoma, angiosarcoma, epithelioid hemangioendothelioma and others are very rare. Except for the contrast washout seen in all liver malignancies, they do not display pathognomonic enhancement patterns upon CEUS. Thus, biopsy is indispensable for definite diagnosis of the tumor entity. Furthermore, CEUS is used for the detection of metastases and therapeutic monitoring after local ablative procedures. The examination procedure differs slightly depending on the specific indication (characterization, detection).

In Search of Imprints Left by the Impairment of Nephrogenesis

2019 ◽  
Vol 207 (2) ◽  
pp. 69-82 ◽  
Author(s):  
Will W. Minuth
Keyword(s):  
Late Phase ◽  
Human Kidney ◽  
Late Gestation ◽  
Clinical Aspects ◽  
Pathological Findings ◽  
Fetal Kidney ◽  
Outer Cortex ◽  
Low Birth Weight Babies ◽  
Fetal Human Kidney ◽  
Nephrogenic Zone

Clinical aspects dealing with the impairment of nephrogenesis in preterm and low birth weight babies were intensely researched. In this context it was shown that quite different noxae can harm nephron formation, and that the morphological damage in the fetal kidney is rather complex. Some pathological findings show that the impairment leads to changes in developing glomeruli that are restricted to the maturation zone of the outer cortex in the fetal human kidney. Other data show also imprints on the stages of nephron anlage including the niche, the pretubular aggregate, the renal vesicle, and comma- and S-shaped bodies located in the overlying nephrogenic zone of the rodent and human kidneys. During our investigations it was noticed that the stages of nephron anlage in the fetal human kidney during the phase of late gestation have not been described in detail. To contribute, these stages were recorded along with corresponding images. The initial nephron formation in the rodent kidney served as a reference. Finally, the known imprints left by the impairment in both specimens were listed and discussed. In sum, the relatively paucity of data on nephron formation in the fetal human kidney during the late phase of gestation is a call to start with intense research so that concepts for a therapeutic prolongation of nephrogenesis can be designed.

Functioning islet cell tumor of the pancreas

1997 ◽  
Vol 38 (1) ◽  
pp. 135-138 ◽  
Author(s):  
M. J. Chung ◽  
B. I. Choi ◽  
J. K. Han ◽  
J. W. Chung ◽  
M. C. Han ◽  
...  
Keyword(s):  
Islet Cell ◽  
Late Phase ◽  
Islet Cell Tumor ◽  
Ct Scanning ◽  
Spiral Ct ◽  
Arterial Phase ◽  
Islet Cell Tumors ◽  
Contrast Enhanced ◽  
Projection Images ◽  
Detection And Localization

Purpose: The purpose of this study was to evaluate the usefulness of dynamic spiral CT, including multidimensional reformation, in the detection and localization of islet cell tumors of the pancreas. Material and Methods: Seven patients with histopathologically proven functioning islet cell tumors of the pancreas were studied with 2-phase contrast-enhanced spiral CT. Scanning of the arterial phase and late phase was started 30 s and 180 s, respectively, after injection of 100 ml of contrast medium at a rate of 3 ml/s. Results: Axial images in the arterial phase depicted the lesions in 5 patients, but in the late phase in only one patient. Multiplanar reformatted images of the arterial phase depicted the lesions in all 7 patients. Maximal intensity projection images demonstrated all lesions with information of their relationship to the vascular structure. Conclusion: Dynamic spiral CT with scanning during the arterial phase and retrospective multidimensional reformation is useful for preoperative detection and localization of small islet cell tumors of the pancreas.

scholarly journals Conspicuity of Malignant Pleural Mesothelioma in Contrast Enhanced MDCT – Arterial Phase or Late Phase?

2021 ◽  
Author(s):  
Lukas Luerken ◽  
Philipp Laurin Thurn ◽  
Florian Zeman ◽  
Christian Stroszczynski ◽  
Okka Wilkea Hamer
Keyword(s):  
Multiple Regression ◽  
Late Phase ◽  
Objective Analysis ◽  
Surrounding Tissue ◽  
Arterial Phase ◽  
Subjective Analysis ◽  
Portal Venous Phase ◽  
Contrast Enhanced ◽  
Venous Phase ◽  
Phase Scan

Abstract Background: To compare two different contrast phases intraindividually regarding conspicuity of MPM in chest MDCT. Methods: 28 patients with MPM were included in this retrospective study. For all patients, chest CT in standard arterial phase and abdominal CT in portal venous phase (scan delay ca. 70 s) was performed. First, subjective analysis of tumor conspicuity was done independently by two radiologists. Second, objective analysis was done by measuring Hounsfield units (HU) in tumor lesions and in the surrounding tissue in identical locations in both phases. Differences of absolute HUs in tumor lesions between phases and differences of contrast (HU in lesion – HU in surrounding tissue) between phases were determined. HU measurements were compared using paired t-test for related samples. Potential confounding effects by different technical and epidemiological parameters between phases were evaluated performing a multiple regression analysis.Results: Subjective analysis: In all 28 patients and for both readers conspicuity of MPM was better on late phase compared to arterial phase. Objective analysis: MPM showed a significantly higher absolute HU in late phase (75.4 vs 56.7 HU, p < 0.001). Contrast to surrounding tissue was also significantly higher in late phase (difference of contrast between phases 18.5 HU, SD 10.6 HU, p < 0.001). Multiple regression analysis revealed contrast phase and tube voltage to be the only significant independent predictors for tumor contrast.Conclusions: In contrast enhanced chest-MDCT for MPM late phase scanning seems to provide better conspicuity and higher contrast to surrounding tissue compared to standard arterial phase scans.

scholarly journals PERBEDAAN INFORMASI CITRA ANATOMI SEKUEN DIFFUSION WEIGHTED IMAGING (DWI) ANTARA PENGGUNAAN PROPELLER DENGAN TANPA PROPELLER PADA PEMERIKSAAN MRI BRAIN DENGAN KASUS STROKE

2020 ◽  
Vol 6 (1) ◽  
pp. 36-43
Author(s):  
Yeti Kartikasari ◽  
M. Irwan Kartili ◽  
Dwi Rochmayanti ◽  
Nindya Aprilia
Keyword(s):  
Diffusion Weighted Imaging ◽  
Quantitative Research ◽  
Wilcoxon Test ◽  
Image Information ◽  
Mri Brain ◽  
Diffusion Weighted ◽  
Significant Difference ◽  
Anatomical Image ◽  
The Difference

Background: Stroke is a brain disease where an acute nerve function is occurred due to the cerebral vascular disorders. To establish a diagnosis the stroke, it can be identified by employing the Diffusion Weighted Imaging (DWI) sequence in the MRI examination. Artifacts still exist on the MRI image which in turn reduce the resolution when using the DWI sequence. Adding the PROPELLER data acquisition method in the DWI sequence possibly improves the quality of brain images. The purpose of this study is to know the difference on the quality of anatomical image information between the DWI sequences with PROPELLER and without PROPELLER methods, and to determine adequate anatomical image appearance that created in amongst of the two methods, specifically for the stroke disease.Methods: this research is quantitative research with experimental approach. This study was conducted using MRI 1.5 T at Bethesda Hospital Yogyakarta. Data were 16 images from 8 patients using DWI sequences using PROPELLER without PROPELLER on MRI Brain examination with stroke. The results of the image were evaluated on 7 criteria: cortex cerebri, basal ganglia, thalamus, pons, cerebellum, stroke (infarction) and artifacts using questionnaires given to 3 respondents. Data analysis was done by Wilcoxon test to know the difference of anatomical image information on DWI sequence using PROPELLER without PROPELLER and to know better anatomical image information from both sequences seen from mean rank value.Results: The results shown, there is a significant difference on the quality of anatomical image information and the artifacts between the use of DWI sequence with and without PROPELLER methods ( 0.05). Based on the mean rank results, the DWI PROPELLER sequence has a higher mean rank value 4.50 compared to the DWI sequence without PROPELLER 0.00.Conclusions: The DWI PROPELLER sequence has better image results compared to the DWI sequence without PROPELLER.

scholarly journals Size measurements of hepatocellular carcinoma: comparisons between contrast and two-dimensional ultrasound

2020 ◽  
Author(s):  
Fei Chen ◽  
Fei Wang ◽  
Mei Zhu ◽  
Si Sun ◽  
Zheng Liu
Keyword(s):  
Hepatocellular Carcinoma ◽  
Late Phase ◽  
Size Difference ◽  
Arterial Phase ◽  
Two Dimensional ◽  
Test Results ◽  
Contrast Enhanced ◽  
2D Imaging ◽  
The Mean ◽  
Longitudinal Diameter

Abstract Background Ultrasound (US) imaging is known to underestimate tumor size in clinical. This study is aimed to compare the size measurements of hepatocellular carcinoma (HCC) in three US imaging modalities, i.e. two-dimensional (2D) imaging, the arterial phase (AP) and the late phase (LP) imaging of contrast-enhanced US (CEUS). Methods Fifty-eight clinically proved HCC patients were included. The 2D and CEUS imaging were performed with Siemens S2000, Philips iu22 and BioSound Twice. 2.5 mL of SonoVue® was injected for every CEUS performance. Two physicians measured the maximal longitudinal and the transverse diameters of the tumors in 2D, the AP and the LP of CEUS from one image section. The three measurements were compared by paired t test. Results The mean longitudinal diameter of HCC appeared to be maximal in the AP (4.73 ± 2.04 cm) of CEUS and minimal in the LP (3.98 ± 1.99 cm) of CEUS. The 2D diameter (4.26 ± 2.07 cm) was in the middle between two CEUS measurements. There were significant differences between any two measurements. Conclusion There is size difference between the three kinds of HCC measurement. It appeared to be maximal in the AP of CEUS and minimal in the LP. The 2D diameter was in the middle.

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