Spot the Best Frame: Towards Intelligent Automated Selection of the Optimal Frame for Initialisation of Focal Liver Lesion Candidates in Contrast-Enhanced Ultrasound Video Sequences

2013 ◽  
Author(s):  
Spyridon Bakas ◽  
Gordon Hunter ◽  
Dimitrios Makris ◽  
Celia Thiebaud
Keyword(s):  
Liver Lesion ◽  
Focal Liver Lesion ◽  
Video Sequences ◽  
Contrast Enhanced Ultrasound ◽  
Contrast Enhanced ◽  
Selection Of

scholarly journals Deep Neural Architectures for Contrast Enhanced Ultrasound (CEUS) Focal Liver Lesions Automated Diagnosis

Sensors ◽  
2021 ◽  
Vol 21 (12) ◽  
pp. 4126
Author(s):  
Cătălin Daniel Căleanu ◽  
Cristina Laura Sîrbu ◽  
Georgiana Simion
Keyword(s):  
Liver Lesion ◽  
Focal Liver Lesion ◽  
Evaluation Procedure ◽  
Focal Liver Lesions ◽  
Contrast Enhanced Ultrasound ◽  
Biomedical Image Processing ◽  
Biomedical Image ◽  
Cad System ◽  
Image Sensing ◽  
Contrast Enhanced

Computer vision, biomedical image processing and deep learning are related fields with a tremendous impact on the interpretation of medical images today. Among biomedical image sensing modalities, ultrasound (US) is one of the most widely used in practice, since it is noninvasive, accessible, and cheap. Its main drawback, compared to other imaging modalities, like computed tomography (CT) or magnetic resonance imaging (MRI), consists of the increased dependence on the human operator. One important step toward reducing this dependence is the implementation of a computer-aided diagnosis (CAD) system for US imaging. The aim of the paper is to examine the application of contrast enhanced ultrasound imaging (CEUS) to the problem of automated focal liver lesion (FLL) diagnosis using deep neural networks (DNN). Custom DNN designs are compared with state-of-the-art architectures, either pre-trained or trained from scratch. Our work improves on and broadens previous work in the field in several aspects, e.g., a novel leave-one-patient-out evaluation procedure, which further enabled us to formulate a hard-voting classification scheme. We show the effectiveness of our models, i.e., 88% accuracy reported against a higher number of liver lesion types: hepatocellular carcinomas (HCC), hypervascular metastases (HYPERM), hypovascular metastases (HYPOM), hemangiomas (HEM), and focal nodular hyperplasia (FNH).

scholarly journals Contrast-Enhanced Ultrasound LI-RADS LR-5 in Hepatic Tuberculosis: Case Report and Literature Review of Imaging Features

2021 ◽  
Vol 12 (1) ◽  
pp. 1-9
Author(s):  
Antonella Forgione ◽  
Francesco Tovoli ◽  
Matteo Ravaioli ◽  
Matteo Renzulli ◽  
Francesco Vasuri ◽  
...  
Keyword(s):  
Liver Lesion ◽  
Focal Liver Lesion ◽  
Focal Liver Lesions ◽  
Liver Imaging ◽  
Imaging Features ◽  
Contrast Enhanced Ultrasound ◽  
Mri Findings ◽  
Tuberculosis Case ◽  
Contrast Enhanced ◽  
Hepatic Tuberculosis

Background: The liver is involved in disseminated tuberculosis in more than 80% of cases while primary liver involvement is rare, representing <1% of all cases. Hepatic tuberculosis (TB) can be treated by conventional anti-TB therapy; however, diagnosing this disease remains a challenge. The diagnosis might be particularly difficult in patients with a single liver lesion that could be misdiagnosed as a tumor or other focal liver lesions. Although computed tomography (CT) and magnetic resonance imaging (MRI) findings have been described, there is a paucity of literature on contrast-enhanced ultrasound (CEUS) features of hepatic TB. Case Summary: herein, we describe a case of a patient with tuberculous lymphadenopathy and chronic Hepatitis C Virus (HCV)-related liver disease who developed a single macronodular hepatic TB lesion. Due to the finding of a hepatocellular carcinoma (HCC) highly suggestive CEUS pattern, specifically a LR5 category according to the Liver Imaging Reporting and Data System (LI-RADS), and a good response to antitubercular therapy, a non-invasive diagnosis of HCC was made, and the patient underwent liver resection. We also review the published literature on imaging features of hepatic TB and discuss the diagnostic challenge represented by hepatic TB when occurs as a single focal liver lesion. Conclusions: this report shows for the first time that the CEUS pattern of hepatic TB might be misinterpreted as HCC and specific imaging features are lacking. Personal history and epidemiological data are mandatory in interpreting CEUS findings of a focal liver lesion even when the imaging pattern is highly suggestive of HCC.

scholarly journals Evaluation of Indirect Methods for Motion Compensation in 2-D Focal Liver Lesion Contrast-Enhanced Ultrasound (CEUS) Imaging

2019 ◽  
Vol 45 (6) ◽  
pp. 1380-1396
Author(s):  
Spyridon Bakas ◽  
Matthaios Doulgerakis-Kontoudis ◽  
Gordon J.A. Hunter ◽  
Paul S. Sidhu ◽  
Dimitrios Makris ◽  
...  
Keyword(s):  
Motion Compensation ◽  
Liver Lesion ◽  
Focal Liver Lesion ◽  
Contrast Enhanced Ultrasound ◽  
Indirect Methods ◽  
Contrast Enhanced

Sa1007 The Role of Dynamic Contrast Enhanced Ultrasound in Focal Liver Lesion Characterization: Preliminary Results

2014 ◽  
Vol 146 (5) ◽  
pp. S-935
Author(s):  
Maria Elena Ainora ◽  
Matteo Garcovich ◽  
Brigida E. Annicchiarico ◽  
Gianluigi Caracciolo ◽  
Davide Roccarina ◽  
...  
Keyword(s):  
Liver Lesion ◽  
Focal Liver Lesion ◽  
Contrast Enhanced Ultrasound ◽  
Preliminary Results ◽  
Dynamic Contrast Enhanced ◽  
Contrast Enhanced ◽  
Lesion Characterization

scholarly journals Characterization of a hepatic haemangioma with contrast-enhanced ultrasound in an infant

Ultrasound ◽  
2017 ◽  
Vol 26 (3) ◽  
pp. 178-181 ◽  
Author(s):  
Marta Anna Piorkowska ◽  
Rok Dezman ◽  
Maria E Sellars ◽  
Annamaria Deganello ◽  
Paul S Sidhu
Keyword(s):  
Imaging Techniques ◽  
Paediatric Population ◽  
Liver Lesion ◽  
Focal Liver Lesion ◽  
Focal Liver Lesions ◽  
Contrast Enhanced Ultrasound ◽  
Safe Alternative ◽  
Contrast Enhanced ◽  
Hepatic Haemangioma

Focal liver lesions are uncommon in the paediatric population, majority are benign but need to be clearly identified as benign. Contrast-enhanced ultrasound has recently received approval for paediatric hepatic use and represents an inexpensive and safe alternative to computed tomography and magnetic resonance imaging for focal liver lesion characterization. We report a case of an incidental focal liver lesion in a four-month-old infant, indeterminate on B-mode ultrasound but successfully characterized with contrast-enhanced ultrasound as a haemangioma, without recourse to other imaging techniques, and with minimal patient discomfort.

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