scholarly journals Novel automatic detection of pleura and B-lines (comet-tail artifacts) on in vivo lung ultrasound scans

2016 ◽  
Author(s):  
Ramin Moshavegh ◽  
Kristoffer Lindskov Hansen ◽  
Hasse Møller Sørensen ◽  
Martin Christian Hemmsen ◽  
Caroline Ewertsen ◽  
...  
Keyword(s):  
Lung Ultrasound ◽  
Automatic Detection ◽  
Comet Tail ◽  
B Lines

scholarly journals Automatic Detection of B-Lines in $In Vivo$ Lung Ultrasound

2019 ◽  
Vol 66 (2) ◽  
pp. 309-317 ◽  
Author(s):  
Ramin Moshavegh ◽  
Kristoffer Lindskov Hansen ◽  
Hasse Moller-Sorensen ◽  
Michael Bachmann Nielsen ◽  
Jorgen Arendt Jensen
Keyword(s):  
Lung Ultrasound ◽  
Automatic Detection ◽  
B Lines

scholarly journals Lung Ultrasound B-lines as a Surrogate Marker for High Left Ventricular Diastolic Pressures; a bed-side Diagnostic tool

2021 ◽  
Vol 4 (18) ◽  
pp. 01-11
Author(s):  
Abdulaziz Aboshahba ◽  
Alsayed Ali Abdou Almarghany ◽  
Moaz Atef Elshahat Abdel ati
Keyword(s):  
Heart Failure ◽  
Cost Efficiency ◽  
Lung Ultrasound ◽  
Surrogate Marker ◽  
Left Ventricular ◽  
University Hospital ◽  
Emergency Setting ◽  
Comet Tail ◽  
Chest Ultrasound ◽  
B Lines

Background: We studied the diagnostic accuracy of B-lines (comet-tail sign) on bedside lung US, NT-proBNP, E/e` on ECHO in differentiation of the causes of acute dyspnea in the emergency setting. Major advantages include bedside availability, no radiation, high feasibility and reproducibility, and cost efficiency. Methods: Our prospective study was performed at the alazhar university hospital, Cairo, Egypt, between July 2019 and March 2020. All patients underwent lung ultrasound examinations, along with TTE, laboratory testing, including rapid NT-proBNP testing. Results: The median E/e’ levels in patients with B-profile were 18, compared with a median of 7.4 in the subjects with A-profile (P =< 0.0001 CI = -9.649 to -7.044). It was found that the sensitivity and the specificity of detecting B-profile on ultrasound is high when E/e’ > 15.5 (95.0% and 83.0% consecutively), which concluded the high correlation between finding B profile on U/S chest and elevated left ventricle filling pressure in a patient presenting with picture of suggestive of heart failure Conclusion: Chest ultrasound can be used as screening test for the evaluation of patients with suspicion of heart failure with excellent sensitivity and good specificity.

scholarly journals A common misunderstanding in lung ultrasound: the comet tail artefact

2018 ◽  
Vol 20 (3) ◽  
pp. 379 ◽  
Author(s):  
Francis Chun Yue Lee ◽  
Christian Jenssen ◽  
Christoph F Dietrich
Keyword(s):  
Clinical Significance ◽  
Lung Ultrasound ◽  
Generation Mechanism ◽  
Current Understanding ◽  
Comet Tail ◽  
B Lines ◽  
Common Misunderstanding

The comet tail artefact is probably one of the most commonly and imprecisely used to describe vertical artefacts found in lung ultrasound. Two distinct artefacts are commonly observed: the lung comets and the B-lines. Both artefacts differ with regard to generation mechanism and clinical significance. This review explores the current understanding and use of these two artefacts in lung ultrasound and suggests how to avoid the pitfalls related to confusing comet tail artefacts with other vertical artefacts.

The impact of B-lines' frequency characterization on lung ultrasound imaging, in vitro- and in vivo study

2020 ◽  
Vol 148 (4) ◽  
pp. 2692-2692
Author(s):  
Federico Mento ◽  
Gino Soldati ◽  
Renato Prediletto ◽  
Marcello Demi ◽  
Libertario Demi
Keyword(s):  
Ultrasound Imaging ◽  
Lung Ultrasound ◽  
In Vivo Study ◽  
The Impact ◽  
B Lines

scholarly journals Optimizing B-lines on lung ultrasound: an in-vitro to in-vivo pilot study with clinical implications

2019 ◽  
Vol 34 (2) ◽  
pp. 277-284
Author(s):  
Christopher N. Schmickl ◽  
Aravind Ajakumar Menon ◽  
Rajanigandha Dhokarh ◽  
Bhavna Seth ◽  
Frank Schembri
Keyword(s):  
Pilot Study ◽  
Lung Ultrasound ◽  
Clinical Implications ◽  
B Lines

scholarly journals Automatic Detection of B-lines in Lung Ultrasound Videos from Severe Dengue Patients

2021 ◽  
Author(s):  
Hamideh Kerdegari ◽  
Phung Tran Huy Nhat ◽  
Angela McBride ◽  
Reza Razavi ◽  
Nguyen Van Hao ◽  
...  
Keyword(s):  
Lung Ultrasound ◽  
Automatic Detection ◽  
Severe Dengue ◽  
B Lines

scholarly journals POS0842 LUNG ULTRASOUND TO ASSESS THE SEVERITY OF INTERSTITIAL LUNG DISEASE IN SYSTEMIC SCLEROSIS

2021 ◽  
Vol 80 (Suppl 1) ◽  
pp. 675.1-675
Author(s):  
C. Bruni ◽  
L. Mattolini ◽  
L. Tofani ◽  
L. Gargani ◽  
N. Landini ◽  
...  
Keyword(s):  
Systemic Sclerosis ◽  
Interstitial Lung Disease ◽  
Lung Disease ◽  
Quantitative Methods ◽  
Lung Ultrasound ◽  
Significant Negative Correlation ◽  
High Resolution Computed Tomography ◽  
Quantitative Score ◽  
Quantitative Scoring ◽  
B Lines

Background:Interstitial lung disease (ILD) is one of the most common complications and one of the main causes of morbidity and mortality in Systemic Sclerosis (SSc). High-resolution computed tomography (HRCT) is the gold standard for the diagnosis of ILD and it allows its quantification. Among semi-quantitative methods, Goh et al proposed a semi-quantitative scoring system to visually quantify ILD extent, with categorical cut-off of 20% to distinguish limited and extensive parenchymal involvement with prognostic implications. More recently, the use of radiomics has allowed the objective quantification of ILD through the use of dedicated software, which calculate different parameters of lung density.Given the exposure to ionizing radiation that the procedure entails, other methods of ILD evaluation are being studied, among which lung ultrasound (LUS) identifies the B-lines as a main feature of ILD. So far, different evidences have proposed the use of LUS for the screening of ILD, even in the early phases of the disease and in subclinical lung involvement.Objectives:the aim of this study is to test the role of LUS in quantifying the severity of SSc-ILD, evaluated with both semi-quantitative visual radiological and quantitative radiomic scores.Methods:Adult SSc patients classified according to the ACR/EULAR 2013 criteria patients were assessed with pulmonary function test (PFTs), lung ultrasound and HRCT over 60 days. CT images were analysed qualitatively (by presence/absence of ILD), semi-quantitatively (categorical Goh score <20% vs> 20% of extent and the continuous extent Goh score made from 5 levels’ assessment– 0 to 100%) and quantitatively [with the densitometric radiomic data obtained through the Horos software - Mean lung attenuation (MLA), Standard Deviation (SD), Kurtosis, Skewness and Lung volume (LV)]. LUS was used to quantify the B-lines detected in each patient by scanning a total of 13 intercostal spaces, on both anterior and posterior chest wall.Results:Among 59 SSc patients (81% women, mean age 48±14 years, 45% anti-Scl70 positive), 23 (39%) presented ILD on HRCT, of which 14 limited and 9 extensive. The mean visual semi-quantitative score was 6%, ranging from 0 to 66%. Our data showed a significantly different number of B-Lines in ILD vs non-ILD patients (median 38 vs 9, p <.005), a result which was further confirmed among non-ILD vs ILD> 20% (median 47 vs 9, p=.001) and ILD <20% (median 36 vs 9, p=.001) patients. Conversely, the number of B-lines was not statistically different between patients with ILD <20% and >20% (median 47 vs 36, p=.78). We observed a significant negative correlation between the number of B-lines and FVC (r=-.472, p<.05) TLC (r=-.436, p=.003), DLco (r=-.515, p<.001), DLCO/VA (r=.-306, p=.03). Finally, the number of B-lines showed a statistically significant correlation with the Goh score on 5 levels (r=.437, p=.001), MLA (r=.571, p<.001), kurtosis (r=-.285, p=.028), skewness (r=-.370, p = .004) and LV (r=-.277, p=.033). All data were confirmed analysing anterior and posterior B-Lines separately.Conclusion:Our study confirms that LUS represents a useful tool for the identification of SSc-ILD. In addition, we showed that LUS may be useful also for the quantification of the severity of SSc-ILD, by correlating with PFT parameters, radiomics parameters and visual radiological evaluation. Together with the PFTs, LUS could be used to increase the accuracy of the screening and, potentially, of the follow-up of SSc-ILD patients.Disclosure of Interests:Cosimo Bruni: None declared, Lavinia Mattolini: None declared, Lorenzo Tofani: None declared, Luna Gargani Consultant of: GE Healthcare, Philips Healthcare and Caption Health, Nicholas Landini: None declared, Gemma Lepri: None declared, Martina Orlandi: None declared, Serena Guiducci: None declared, Silvia Bellando Randone: None declared, Marco Matucci-Cerinic: None declared

scholarly journals Patients in intensive care unit for COVID-19 pneumonia: the lung ultrasound patterns at admission and discharge. An observational pilot study

2021 ◽  
Vol 13 (1) ◽  
Author(s):  
Persona Paolo ◽  
Valeri Ilaria ◽  
Zarantonello Francesco ◽  
Forin Edoardo ◽  
Sella Nicolò ◽  
...  
Keyword(s):  
Intensive Care ◽  
Lung Ultrasound ◽  
Low Cost ◽  
Low Frequency ◽  
Specific Pattern ◽  
University Hospital ◽  
Left Hemithorax ◽  
Significant Difference ◽  
The Right ◽  
B Lines

Abstract Background During COVID-19 pandemic, optimization of the diagnostic resources is essential. Lung Ultrasound (LUS) is a rapid, easy-to-perform, low cost tool which allows bedside investigation of patients with COVID-19 pneumonia. We aimed to investigate the typical ultrasound patterns of COVID-19 pneumonia and their evolution at different stages of the disease. Methods We performed LUS in twenty-eight consecutive COVID-19 patients at both admission to and discharge from one of the Padua University Hospital Intensive Care Units (ICU). LUS was performed using a low frequency probe on six different areas per each hemithorax. A specific pattern for each area was assigned, depending on the prevalence of A-lines (A), non-coalescent B-lines (B1), coalescent B-lines (B2), consolidations (C). A LUS score (LUSS) was calculated after assigning to each area a defined pattern. Results Out of 28 patients, 18 survived, were stabilized and then referred to other units. The prevalence of C pattern was 58.9% on admission and 61.3% at discharge. Type B2 (19.3%) and B1 (6.5%) patterns were found in 25.8% of the videos recorded on admission and 27.1% (17.3% B2; 9.8% B1) on discharge. The A pattern was prevalent in the anterosuperior regions and was present in 15.2% of videos on admission and 11.6% at discharge. The median LUSS on admission was 27.5 [21–32.25], while on discharge was 31 [17.5–32.75] and 30.5 [27–32.75] in respectively survived and non-survived patients. On admission the median LUSS was equally distributed on the right hemithorax (13; 10.75–16) and the left hemithorax (15; 10.75–17). Conclusions LUS collected in COVID-19 patients with acute respiratory failure at ICU admission and discharge appears to be characterized by predominantly lateral and posterior non-translobar C pattern and B2 pattern. The calculated LUSS remained elevated at discharge without significant difference from admission in both groups of survived and non-survived patients.

scholarly journals 19 Automated Quantification Of B-Lines in Lung Ultrasound On COVID-19 Patients

2021 ◽  
Vol 78 (2) ◽  
pp. S9-S10
Author(s):  
C. Baloescu ◽  
A. Chen ◽  
B. Raju ◽  
N. Evans ◽  
C.L. Moore
Keyword(s):  
Lung Ultrasound ◽  
Automated Quantification ◽  
B Lines
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