scholarly journals Focal Pancreatic Lesions: Role of Contrast-Enhanced Ultrasonography

Diagnostics ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 957
Author(s):  
Tommaso Vincenzo Bartolotta ◽  
Angelo Randazzo ◽  
Eleonora Bruno ◽  
Pierpaolo Alongi ◽  
Adele Taibbi
Keyword(s):  
Personal Experience ◽  
Blood Pool ◽  
Focal Lesions ◽  
Dynamic Information ◽  
Blood Pool Contrast Agent ◽  
Contrast Enhanced ◽  
Contrast Enhanced Ultrasonography ◽  
Cystic Pancreatic Lesions

The introduction of contrast-enhanced ultrasonography (CEUS) has led to a significant improvement in the diagnostic accuracy of ultrasound in the characterization of a pancreatic mass. CEUS, by using a blood pool contrast agent, can provide dynamic information concerning macro- and micro-circulation of focal lesions and of normal parenchyma, without the use of ionizing radiation. On the basis of personal experience and literature data, the purpose of this article is to describe and discuss CEUS imaging findings of the main solid and cystic pancreatic lesions with varying prevalence.

scholarly journals Characterization of focal liver lesions using sulphur hexafluoride (SF6) microbubble contrast-enhanced ultrasonography

2021 ◽  
Vol 52 (1) ◽  
Author(s):  
Mohamed Gamal El-Din Mansour ◽  
Mona Hussein Abdel Kader ◽  
Hanan Mahmoud Arafa ◽  
Susan Adil Ali
Keyword(s):  
Positive Predictive Value ◽  
Predictive Value ◽  
Focal Liver Lesions ◽  
Liver Lesions ◽  
Focal Lesions ◽  
Contrast Enhanced ◽  
Conventional Ultrasound ◽  
Contrast Enhanced Ultrasonography ◽  
Hepatic Lesions

Abstract Background Focal hepatic lesions incidentally detected during ultrasound usually need further step for proper characterization. The aim of this study was to highlight the efficacy of microbubble contrast-enhanced ultrasonography (CEUS) in characterization of focal liver lesions. This prospective study was conducted on 60 patients presented with hepatic focal lesions in the period from January 2019 to June 2020. CEUS studies were performed after a baseline conventional ultrasound with the same machine by the same operator. The ultrasound contrast agent used is second-generation US contrast agent. The enhancement patterns of the hepatic lesions were studied during the vascular phases up to 5 min and the data were correlated with histopathology, triphasic contrast-enhanced CT, and clinical follow-up. Results CEUS demonstrated a sensitivity of 94.2%, specificity of 88.9%, positive predictive value of 91%, negative predictive value of 94.1%, and accuracy of 92.3% for characterization of hepatic focal lesions, compared to a sensitivity of 100%, specificity of 81.8%, positive predictive value of 84%, negative predictive value of 100%, and accuracy of 90.7% for triphasic CT. Conclusion CEUS is an effective tool in characterization of HFLs and recommended as a second diagnostic step after conventional ultrasound to immediately establish the diagnosis especially in patients with contraindications to CECT.

scholarly journals Oral and IV Contrast Enhanced Ultrasonography of the digestive tract – a useful completion of the B-mode examination: a literature review and an exhaustive illustration through images

2015 ◽  
Vol 17 (1) ◽  
pp. 62 ◽  
Author(s):  
Cristian Neciu ◽  
Radu Badea ◽  
Liliana Chiorean ◽  
Alexandru Florin Badea ◽  
Iulian Opincaru
Keyword(s):  
Digestive Tract ◽  
Personal Experience ◽  
Clinical Context ◽  
Lesion Area ◽  
Qualitative And Quantitative ◽  
Grey Scale ◽  
Contrast Enhanced ◽  
The Us ◽  
Contrast Enhanced Ultrasonography

Contrast enhanced ultrasonography, using IV and/or oral/rectal contrast agents, represents a technical development of the US method, which has proved its applicability in the qualitative and quantitative assessment of the normal and pathological circulatory bed, as well as of the digestive lumen. The use of microbubbles and harmonics opens a new horizon in the detection and characterization of the inflammatory and tumoral conditions of the digestive tract. The interpretation of the data requires corroboration with the grey scale aspect of the examined lesion/area, as well as with the clinical context of the case and the results of other diagnosis techniques. The purpose of this paper is to review the main applications of CEUS in digestive tract pathology by analyzing the significant literature and guidelines in the light of our personal experience and demonstrating it through suggestive images.

scholarly journals Application of artificial intelligence in pancreaticobiliary diseases

2021 ◽  
Vol 14 ◽  
pp. 263177452199305
Author(s):  
Hemant Goyal ◽  
Rupinder Mann ◽  
Zainab Gandhi ◽  
Abhilash Perisetti ◽  
Zhongheng Zhang ◽  
...  
Keyword(s):  
Artificial Intelligence ◽  
Response To Treatment ◽  
Endoscopic Retrograde ◽  
Artificial Intelligence Techniques ◽  
Computer Aided ◽  
Rapid Pace ◽  
Cystic Pancreatic Lesions ◽  
Aided Diagnosis

The role of artificial intelligence and its applications has been increasing at a rapid pace in the field of gastroenterology. The application of artificial intelligence in gastroenterology ranges from colon cancer screening and characterization of dysplastic and neoplastic polyps to the endoscopic ultrasonographic evaluation of pancreatic diseases. Artificial intelligence has been found to be useful in the evaluation and enhancement of the quality measure for endoscopic retrograde cholangiopancreatography. Similarly, artificial intelligence techniques like artificial neural networks and faster region-based convolution network are showing promising results in early and accurate diagnosis of pancreatic cancer and its differentiation from chronic pancreatitis. Other artificial intelligence techniques like radiomics-based computer-aided diagnosis systems could help to differentiate between various types of cystic pancreatic lesions. Artificial intelligence and computer-aided systems also showing promising results in the diagnosis of cholangiocarcinoma and the prediction of choledocholithiasis. In this review, we discuss the role of artificial intelligence in establishing diagnosis, prognosis, predicting response to treatment, and guiding therapeutics in the pancreaticobiliary system.

MO226A NEW DIAGNOSTIC TOOL FOR CKD PATIENTS: CONTRAST-ENHANCED ULTRASONOGRAPHY. A SINGLE CENTER EXPERIENCE

2021 ◽  
Vol 36 (Supplement_1) ◽  
Author(s):  
Mirela Liana Gliga ◽  
Cristian Chirila ◽  
Paula Chirila ◽  
Adriana Gomotarceanu ◽  
Imola Torok ◽  
...  
Keyword(s):  
Diagnostic Tool ◽  
Final Diagnosis ◽  
Medical System ◽  
Focal Lesions ◽  
Non Invasive ◽  
Single Center Experience ◽  
Contrast Enhanced ◽  
Contrast Enhanced Ultrasonography ◽  
Malignant Lesions ◽  
Guidelines And Recommendations

Abstract Background and Aims Contrast-enhanced ultrasonography (CEUS) is a minimally invasive diagnostic tool available for diagnosing microvascular disturbances in tumors and many vascular pathologies. Unlike other radiological contrast agents, it is completely harmless for CKD patients and therefore it is used for the safe diagnosis of many diffuse or focal pathologies. Method We used CEUS examination in 50 CKD patients for the following pathologies: 10 atypical cysts, 15 liver focal lesions, 2 splenic focal lesions, 3 renal infarcts, 12 kidney focal lesions and 8 other organ involvements. Examination was made using a VOLUSON E8 machine (GE Medical System Kreztechnik GmbH Tiefenbach 15, Austria) with a 3.5 MHz convex array abdominal transducer. 2.4 ml of microbubble contrast-agent was administered intravenously and recording of the results were made for 3-5 minutes after injection. Results Depending on the organ vascular characteristics, contrast enhancement and/or wash-out were suggestive for the final diagnosis. In liver lesions there are three phases and in kidneys, spleen, gallbladder, adenopathies there are two vascular phases. We obtained a very good positive predictive value and sensitivity in detecting malignant lesions. Conclusion According to The EFSUMB Guidelines and Recommendations for the Clinical Practice of Contrast-Enhanced Ultrasound they are used both for hepatic and Non-Hepatic Applications. Being non-invasive and non-irradiating it could be the main diagnostic examination in CKD population in the future.

scholarly journals Use of Contrast-Enhanced Ultrasonography for the Characterization of Tumor Thrombi in Seven Dogs

Animals ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 1613
Author(s):  
Alessia Cordella ◽  
Pascaline Pey ◽  
Nikolina Linta ◽  
Manuela Quinci ◽  
Marco Baron Toaldo ◽  
...  
Keyword(s):  
Color Doppler ◽  
Case Series ◽  
Arterial Phase ◽  
Retrospective Case ◽  
Primary Tumors ◽  
Contrast Enhanced ◽  
Venous Phase ◽  
Contrast Enhanced Ultrasonography ◽  
Tumor Thrombi

Tumors of adrenal and thyroid glands have been associated with vascular invasions—so-called tumor thrombi, both in humans and dogs. The detection and characterization of venous thrombi is an important diagnostic step in patients with primary tumors for both surgical planning and prognosis. The aim of this study was to describe the use of contrast-enhanced ultrasonography (CEUS) for the characterization of tumor thrombi. Dogs with tumor thrombus who underwent bi-dimensional ultrasound (B-mode US) and CEUS were included. Seven dogs were enrolled in this retrospective case series. On B-mode US, all thrombi were visualized, and vascular distension and thrombus-tumor continuity were seen in three and two cases, respectively. On color Doppler examination, all thrombi were identified, seemed non-occlusive and only two presented vascularity. On CEUS, arterial-phase enhancement and washout in the venous phase were observed in all cases. Non-enhancing areas were identified in the tumor thrombi most likely representing non-vascularized tissue that could potentially be embolized in the lungs after fragmentation of the tumor thrombi. On the basis of these preliminary study, CEUS appeared to be useful for the characterization of malignant intravascular invasion.

scholarly journals Role of contrast enhanced ultrasound in characterization of focal liver lesions

2014 ◽  
Vol 45 (1) ◽  
pp. 7-17 ◽  
Author(s):  
Shruti Thakur ◽  
Anupam Jhobta ◽  
D.S. Dhiman ◽  
R.G. Sood ◽  
Arun Chauhan ◽  
...  
Keyword(s):  
Focal Liver Lesions ◽  
Liver Lesions ◽  
Contrast Enhanced Ultrasound ◽  
Contrast Enhanced
Sign in / Sign up

Export Citation Format

Share Document