scholarly journals Analysis on imaging features of mammography in computer radiography and investigation on gray scale transform and energy subtraction

2003 ◽  
Vol 30 (12) ◽  
pp. 3264-3264
Author(s):  
Shuli Feng
Keyword(s):  
Imaging Features ◽  
Gray Scale ◽  
Computer Radiography ◽  
Energy Subtraction

scholarly journals Effects of Gray-Scale Ultrasonography Immediate Post-Contrast on Characterization of Focal Liver Lesions

2015 ◽  
Vol 2015 ◽  
pp. 1-11
Author(s):  
Wei Yang ◽  
Min-Hua Chen ◽  
Wei Wu ◽  
Ying Dai ◽  
Zhi-Hui Fan
Keyword(s):  
Interventional Procedure ◽  
Hepatic Metastases ◽  
Focal Liver Lesions ◽  
Imaging Features ◽  
Liver Lesions ◽  
Gray Scale ◽  
Post Contrast ◽  
Contrast Enhanced ◽  
Before And After

This study compared the imaging features of conventional gray scale ultrasound (US) before and after contrast-enhanced ultrasound (CEUS) for focal liver lesions and 22 evaluated the role of US post-CEUS in characterizing liver lesions. 126 patients with 158 focal liver lesions underwent CEUS and US post-CEUS examination and entered this study. There were 74 hepatocellular carcinomas (HCC), 43 hepatic metastases, and 41 hemangiomas. Imaging features of US pre-CEUS and US post-CEUS were analyzed offsite by two blinded experienced radiologists to evaluate size, boundary, echogenicity, internal texture, posterior acoustic enhancement, spatial resolution, and contrast resolution. In the end with pathological and clinical evidence, the diagnostic accuracy rate of US pre-CEUS was 53.8% (85/158 lesions), lower than that of CEUS (88.0%, 139/158 lesions); with the complementation of US post-CEUS the rate rose to 93.0% (147/158 lesions). US post-CEUS could improve the visibility of typical structures of focal liver lesions and might provide important complementary information for CEUS diagnosis. It also increases the visibility of small liver lesions compared with US pre-CEUS and helps to guide local interventional procedure.

Relationship Between Flash Echo Gray Scale Imaging Features and Pathologic Findings in Hepatic Adenoma

2002 ◽  
Vol 21 (7) ◽  
pp. 821-824 ◽  
Author(s):  
Tsung-Ming Chen ◽  
Sheng-Nan Lu ◽  
Jing-Houng Wang ◽  
Chao-Hung Hung ◽  
Hung-Da Tung
Keyword(s):  
Imaging Features ◽  
Hepatic Adenoma ◽  
Gray Scale ◽  
Pathologic Findings

scholarly journals Contrast-Enhanced Ultrasound Findings of Hepatocellular Carcinoma with Neuroendocrine Carcinoma: Case Report and Review of the Literature

2020 ◽  
Author(s):  
Hong Wang ◽  
Dan Yang ◽  
Yan Luo ◽  
Yulan Peng ◽  
Wenwu Ling
Keyword(s):  
Hepatocellular Carcinoma ◽  
Case Report ◽  
Neuroendocrine Carcinoma ◽  
Ultrasound Image ◽  
Uneventful Recovery ◽  
Arterial Phase ◽  
Imaging Features ◽  
Contrast Enhanced Ultrasound ◽  
Gray Scale ◽  
Contrast Enhanced

Abstract Background: Hepatocellular carcinoma (HCC) with concurrent occurrence of primary hepatic neuroendocrine carcinoma (NEC) of the liver is very rare. Preoperative diagnosis of hepatocellular carcinoma with neuroendocrine carcinoma to be very difficult. Case presentation: A 33-year-old male was referred to our hospital due to liver space-occupying lesion. To further diagnosis, he received laboratory tests, gray-scale US, and contrast-enhanced ultrasound (CEUS). In this present study, ethical approval was not necessary, as this article is a case report, which is based on the clinical information of the patient. The patient gave his permission for publication of the case. Gray-scale abdominal ultrasound image demonstrated a mass at the inferior segment of the right posteriorr liver lobe with liver cirrhosis. In CEUS, the lesion was homogeneously hyper-enhanced in the arterial phase, heterogenous mild enhancement in the portal phase and hypo-enhanced in the parenchymal phase. The patient received middle hepatectomy, spleenectomy and cholecystectomy. He had an uneventful recovery from the procedure.Conclusions: We presented a case report with HCC with NEC, focusing on the ultrasound imaging features of this tumor, especially its enhancement pattern on CEUS. This is the first CEUS performance reported in association with HCC with NEC. CEUS provided helpful information for diagnosis. We should not simply diagnose such tumors as HCC, but think about the possibilities of HCC another type of cancer, especially in patients with the chronic liver disease.

Imaging Features of Nontumorous Conditions Involving the Trachea and Main-stem Bronchi

2002 ◽  
Vol 47 (3) ◽  
pp. 269
Author(s):  
Kyung Nyeo Jeon ◽  
Duk Sik Kang ◽  
Kyung Soo Bae
Keyword(s):  
Main Stem ◽  
Imaging Features

PEMBELAJARAN SIMULASI PENCITRAAN CT DENGAN MENGGUNAKAN PRINSIP REKONSTRUKSI CITRA DALAM SOFTWARE MATLAB

2015 ◽  
Vol 8 (3) ◽  
pp. 161
Author(s):  
Samuel Gideon
Keyword(s):  
Image Reconstruction ◽  
Ct Imaging ◽  
The Body ◽  
Reconstruction Technique ◽  
Imaging Features ◽  
Back Projection ◽  
Cross Sectional ◽  
Low Contrast ◽  
Image Reconstruction Technique ◽  
Imaging Algorithms

This research was conducted as a learning alternatives for study of CT (computed tomograpghy) imaging using image reconstruction technique which are inversion matrix, back projection and filtered back projection. CT imaging can produce images of objects that do not overlap. Objects more easily distinguishable although given the relatively low contrast. The image is generated on CT imaging is the result of reconstruction of the original object. Matlab allows us to create and write imaging algorithms easily, easy to undersand and gives applied and exciting other imaging features. In this study, an example cross-sectional image recon-struction performed on the body of prostate tumors using. With these methods, medical prac-titioner (such as oncology clinician, radiographer and medical physicist) allows to simulate the reconstruction of CT images which almost resembles the actual CT visualization techniques.Keywords : computed tomography (CT), image reconstruction, Matlab

Imaging features of children with growth hormone deficiency

2019 ◽  
Author(s):  
Tahri Abir ◽  
Abdellaoui Wahiba ◽  
Rouf Siham ◽  
Latrech Hanane
Keyword(s):  
Growth Hormone ◽  
Growth Hormone Deficiency ◽  
Hormone Deficiency ◽  
Imaging Features
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