Contrast-enhanced ultrasound versus conventional ultrasound in the diagnosis of polypoid lesion of gallbladder: A multi-center study of dynamic microvascularization

2013 ◽  
Vol 55 (3) ◽  
pp. 359-374 ◽  
Author(s):  
Shu-Guang Zheng ◽  
Hui-Xiong Xu ◽  
Lin-Na Liu ◽  
Ming-De Lu ◽  
Xiao-Yan Xie ◽  
...  
Keyword(s):  
Polypoid Lesion ◽  
Contrast Enhanced Ultrasound ◽  
Contrast Enhanced ◽  
Conventional Ultrasound ◽  
Multi Center Study ◽  
Center Study

scholarly journals Contrast-Enhanced Ultrasound (CEUS) in Non-Traumatic Abdominal Emergencies

2020 ◽  
Vol 06 (03) ◽  
pp. E76-E86
Author(s):  
Diletta Cozzi ◽  
Simone Agostini ◽  
Elena Bertelli ◽  
Michele Galluzzo ◽  
Emanuela Papa ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Ultrasound Imaging ◽  
Acute Inflammation ◽  
Emergency Setting ◽  
Contrast Enhanced Ultrasound ◽  
First Line ◽  
Additional Information ◽  
Contrast Enhanced ◽  
Conventional Ultrasound ◽  
Abdominal Emergencies

AbstractConventional ultrasound imaging (US) is the first-line investigation in acute non-traumatic abdominal emergencies, but sometimes it needs further examinations, such as computed tomography (CT), to reach a certain diagnosis. Contrast-enhanced ultrasound (CEUS), through injection of contrast medium, may provide the radiologist with additional information that could not be investigated with baseline US. It could help reach a diagnosis and rapidly determine the proper therapy in an emergency setting. The purpose of this review is to explain and illustrate the various possibilities and limitations of CEUS in acute non-traumatic abdominal diseases, in particular acute inflammation, parenchymal infarcts, and hemorrhages.

scholarly journals Abdominal Contrast Enhanced Ultrasound, A Practical Review

2019 ◽  
Vol 16 (6) ◽  
pp. 37-46
Author(s):  
Adina Cociorvei
Keyword(s):  
Severe Respiratory Failure ◽  
Contrast Enhanced Ultrasound ◽  
Peripheral Vein ◽  
Intravenous Contrast ◽  
Contrast Enhanced ◽  
Bowel Diseases ◽  
Conventional Ultrasound ◽  
Inflammatory Bowel ◽  
Hepatic Lesions ◽  
The One

AbstractAbdominal contrast enhanced ultrasound (CEUS) is a relatively new investigation method that combines conventional ultrasound with a small amount of intravenous contrast through a peripheral vein (usually the cubital vein). The contrast is made by very small gas microbubbles floating in a phospholipid suspension. The size of microbubbles are between 1-10 micrometers, being to large to go out of the vessels, but sufficiently small to stay into the capillaries, and this is the reason for they can be used as vascular tracers. So, it is possible to obtain images with microvessels inside of different organs in different vascular phases (arterial, portal, venous), images that are similar with the one obtained in CECT and CEMRI.The intravenous contrast used in CEUS eliminates trough the lungs, during expiration. These is the reason why the most important contraindication for using iv contrast is severe respiratory failure. Also, it is important that intravenous contrast is not allergenic, the percentage of allergic reaction being extremly small (0,001%).The most important advantages of CEUS are:• It can be safely used for the pacients that are allergic to intravenous contrast used in CECT and CEMRI;• It can be used in pacients with chronic kidney disease;Abdominal contrast enhanced ultrasound is used in day-to-day practice mainly for evaluation of hepatic lesions, but also for pancreatic, kidney, testis pathology, as well as for inflammatory bowel diseases.

Carotid artery vulnerable plaque model for cerebrovascular events by conventional ultrasound & contrast-enhanced ultrasound: A preliminary study

2021 ◽  
pp. 1-13
Author(s):  
Qin Wang ◽  
Yunqian Huang ◽  
Yuke Zhang ◽  
Yuqun Wang ◽  
Yanchun Xie ◽  
...  
Keyword(s):  
High Risk ◽  
Carotid Artery ◽  
Vulnerable Plaque ◽  
Cerebrovascular Event ◽  
Contrast Enhanced Ultrasound ◽  
Carotid Ultrasound ◽  
Test Set ◽  
Cerebrovascular Events ◽  
Contrast Enhanced ◽  
Conventional Ultrasound

BACKGROUND: Conventional ultrasound and contrast-enhanced ultrasound play an important role in the application of carotid plaque. AIMS: To establish carotid artery vulnerable plaques plaque model by conventional ultrasound combined with contrast-enhanced ultrasound, identify high-risk plaques that may lead to cerebrovascular events, and provide clinical risk warning of high-risk plaques of stroke. METHODS: 205 cases of patients selected in 5053 patients with symptoms from 2018 to 2019 who were verified carotid plaques by conventional ultrasound and contrast-enhanced ultrasound image characteristics, 147 cases as a training set, establishing the carotid artery plaque model, analyzing the characteristic of the plaques and the relationship between cerebrovascular event, with 58 cases as a test set, verify the model. Routine carotid ultrasound and contrast-enhanced carotid ultrasound were performed in all enrolled patients. RESULTS: The gray-level characteristics of conventional ultrasound in the training concentration showed statistical differences in plaque morphology, fibrous cap morphology, uniformity and calcification degree in cerebrovascular events. The contrast enhanced ultrasound characteristics of plaques showed statistical differences in neovascularization and perfusion mode in cerebrovascular events. In the test set, there were statistical differences in the above conventional gray scale features and CEUS features. CONCLUSION: The vulnerable plaque model established by conventional ultrasound combined with contrast-enhanced ultrasound has good diagnostic value for the characteristic plaque of carotid artery with cerebrovascular events.

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