Assessment of ultrasound acoustic artifacts in patients with acute dyspnea: a multicenter study

Sperandeo, Marco; Varriale, Antonio; Scionti, Giuseppe; Polverino, Eva; Feragalli, Beatrice; Piattelli, M.L.; Maggi, Michele Maria; Palmieri, Vincenzo O.; Terracciano, Fulvia; Sio, Ilario de; Villella, Massimo; Copetti, Massimiliano; Pellegrini, Fabio; Vendemiale, Gianluigi; Cipriani, Cristiana

doi:10.1258/ar.2012.120340

Cited by 54 publications

(51 citation statements)

References 28 publications

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“…Overall Transducer Sperandeo et al compared the BLA examinations with low-medium frequency (3.5-5.0 MHz) convex probe and high-frequency (8-12.5 MHz) linear probe. Counts of BLA were higher when convex probes were used [29]. However, other more accepted studies performed with convex probe [24], linear probe [30], cardiac probe [31] and microconvex probe [32] showed similar findings on the visualization of BLA in a variety of settings and patients and by using different machines.…”

Section: Ultrasound Equipmentmentioning

confidence: 71%

Lung artefacts and their use

Dietrich

Mathis²,

Blaivas

et al. 2016

Med Ultrason

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IntroductionIn years gone by examination of patients with pulmonary disorders rested essentially on a clinician's bedside physical examination, of auscultation and percussion, complimented with blood gas analysis and X-ray imaging. Lung ultrasound has emerged into this context as a real-time bedside procedure, delivering information relevant to the clinician's differential diagnosis. A large part of sonographic lung examination involves the interpretation of artefacts, thus knowledge of the origin of typical artefacts is important. Although indirect sonographic signs, nonetheless reliable conclusions on the condition of the lung can be inferred. Particularly the of quantity and distribution of B-lines can establish important assessment of the cause and degree of fluid load within the interstitium.All focused ultrasound investigations, including bedside lung ultrasound, allow symptom evaluation considering multiple organ-systems yet with minimal time delay. Such integration of imaging with clinical assessment and treatment is called Point-of-Care Ultrasound (POCUS) and should be understood as an extension of the physical examination. POCUS offers a unique but crucial role, integrating clinical and other imaging findings, including cardiac ultrasound (echocardiography), chest radiography, and computed tomography (CT) scans is crucial, which alone may lack the required accuracy.The emergence of differences in approach to lung sonography, technique and nomenclature, provided the AbstractThe science of lung ultrasound has grown tremendously over the last two decades and lung ultrasound has not only entered the mainstream of point of care ultrasound but has become a dominant topic. Understanding lung ultrasound signs and artifacts is critical to being able to correlate findings with actual pathology and normal anatomy and physiology. Investigators have described multiple lung ultrasound artifacts and findings and it is important to understand both the physics and anatomic basis behind them. Additionally, ultrasound machine use and transducer selection can significantly affect results obtained on patient during an examination and the provider must carefully choose the correct settings. This manuscript describes the state of the art in ultrasound artifact recognition and correlation as well as management of ultrasound technology to optimize diagnostic success.Keywords: ultrasound, lung, artifacts, pathology, guidelines [2,[11][12][13][14][15] we discuss the prominent role of the particular artefacts of lung sonography answering differential-diagnostic questions in patients with cardio-pulmonary diseases. Lung artefacts

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Section: Ultrasound Equipmentmentioning

confidence: 71%

Lung artefacts and their use

Dietrich

Mathis²,

Blaivas

et al. 2016

Med Ultrason

View full text Add to dashboard Cite

show abstract

“…Some previous studies have determined that the presence of 3 or more B-lines in a single view is valid indication of the diagnosis of interstitial disease; however, other studies did not quantify the exact numbers of Blines, but rather noted a significantly greater number in pathological lungs compared with healthy lungs. 25,27,28 Studies in adults have suggested that the overall quantity of B-lines is less important than the spaces between the lines, which should be 7 mm unless they are coalescent B-lines, for which 3 mm is acceptable. 29,30 Although our study protocol defined interstitial disease as the presence of $3 B-lines on a still image or on a clip, 28 it is possible that there were fewer defined B-lines on the LUS images and more coalescent B-lines, which might have led to poorer agreement between raters.…”

Section: Discussionmentioning

confidence: 99%

Lung Ultrasonography: A Viable Alternative to Chest Radiography in Children with Suspected Pneumonia?

Ambroggio

Sucharew

Rattan

et al. 2016

The Journal of Pediatrics

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“…Previous studies have also documented B-lines in normal lung; isolated B-lines could be observed in healthy subjects (mean: 1.9 per scan) [29,] as could positive scans for multiple B-lines, mainly confined to laterobasal areas [30], and they are far from uncommon among the elderly [7]. …”

Section: Discussionmentioning

confidence: 99%

The Senile Lung as a Possible Source of Pitfalls on Chest Ultrasonography and Computed Tomography

Ciccarese¹,

Chiesa²,

Feletti

et al. 2015

Respiration

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Background: Age-associated changes in the pulmonary system could be detected with imaging techniques. Widespread use of lung ultrasonography (US) requires characterization of a normal pattern. Objectives: To compare US and computed tomography (CT) findings in healthy subjects undergoing both techniques (with CT as the gold standard). Methods: We prospectively selected 59 subjects undergoing chest CT and US on the same day, without a history of smoking, respiratory symptoms, or known pulmonary pathologies. There were 44 patients in group 1 (age =60 years - elderly) and 15 patients in group 2 (age =50 years - young). Lung US was performed with a convex and a linear probe, and 10 chest areas per patient were analyzed. Convex and linear probe agreement was evaluated by means of the Cohen κ statistic; Fisher's exact test was used to compare categorical variables between groups. Results: Isolated B-lines were frequent in both group 1 (54.5%) and group 2 (40.0%); the number of chest areas positive for B-lines increased with age (16.1% in group 1 vs. 5.3% in group 2, p = 0.0028). In group 2, we found that 37.5% of subjects with B-lines had at least 1 chest area with multiple B-lines, but only 2 subjects had 2 or more. Moreover, in group 1 the chest CT documented a reticular pattern (2.3%), areas of increased density (9.1%), ground glass (6.8%), cysts (2.3%), bronchiectasis (22.7%), and bronchial thickening (6.8%); in group 2, only cysts (6.7%) and bronchiectasis (6.7%) were found. Conclusions: The senile lung is characterized by mild changes on CT and US. Chest areas positive for B-lines increase with age, and focal multiple B-lines can be found. However, diffuse patterns, especially in symptomatic subjects, suggest a different diagnosis.

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Assessment of ultrasound acoustic artifacts in patients with acute dyspnea: a multicenter study

Cited by 54 publications

References 28 publications

Lung artefacts and their use

Lung artefacts and their use

Lung Ultrasonography: A Viable Alternative to Chest Radiography in Children with Suspected Pneumonia?

The Senile Lung as a Possible Source of Pitfalls on Chest Ultrasonography and Computed Tomography

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