Ultrasonic appearance of metallic foreign bodies in parenchymal organs

Wendell, Benjamin A.; Athey, Patricia A.

doi:10.1002/jcu.1870090307

Cited by 30 publications

(13 citation statements)

References 3 publications

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“…A hyperechoic comet-tail artifact secondary to reverberations inside the dense echogenic foreign body was visualized in three cases (Figs. 2 and 3) [3,4]. In seven cases a surrounding hypoechoic mass ranging from 1 .2 to 3 cm in diameter correlated well with inflammatory changes found at surgery (Fig.…”

Section: Eight Foreignsupporting

confidence: 63%

Sonographic diagnosis of foreign bodies of the distal extremities

Fornage

Schernberg

1986

American Journal of Roentgenology

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Section: Eight Foreignsupporting

confidence: 63%

Sonographic diagnosis of foreign bodies of the distal extremities

Fornage

Schernberg

1986

American Journal of Roentgenology

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“…Comet-tail artifacts were first described by Wendell and Athey [11] and later studied in depth by Thickmann and Ziskin [12]. They are high-amplitude echoes that fan out from their source along the US beam like the tail of a comet.…”

Section: Discussionmentioning

confidence: 99%

Characterization of the normal pulmonary surface and pneumonectomy space by reflected ultrasound

Sperandeo

Varriale

Scionti

et al. 2011

Journal of Ultrasound

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KEYWORDSTransthoracic; Normal pleuropulmonary; Pneumonectomy space; Ultrasound artifacts.Abstract Interest has been increasing in the use of transthoracic ultrasound for the study of the pleuropulmonary disease. US imaging depends mainly on the physical interactions between ultrasound waves and the tissues being examined. In the thoracic region, the prescence of the chest wall and the air-containing pulmonary tissues cause various artifacts that strongly influence the resulting images. At the interface between tissues and air, the ultrasound beam is totally reflected and produces simple reverberation, comet-tail artifacts, and ring-down artifacts. We report the findings of transthoracic ultrasound in normal healthy subjects and in those who had undergone pneumonectomy.This experience shows that, in terms of the ultrasound artifacts mentioned above, the postpneumonectomy cavity is not significantly different from the healthy lung.Sommario SommarioL'interesse nell'utilità dell'ecografia del torace si è di recente accresciuto specialmente nello studio delle malattie pleuro-polmonari. L'immagine ecografica dipende prevalentemente dalle interazioni fisiche tra gli ultrasuoni e i tessuti esaminati; pertanto nello studio del torace la presenza della gabbia toracica e del tessuto polmonare contenente aria influenza fortemente le immagini generando molteplici artefatti. Il fascio ultrasonoro passando attraverso l'interfaccia tessuti/aria è quasi totalmente riflesso, producendo semplici riverberazioni (artefatti orizzontali), "comet-tail" e "ring-down" (artefatti verticali). Riportiamo gli effetti fisici implicati nella formazione di artefatti durante l'ecografia del torace in soggetti normali confrontati con lo spazio residuo post-pneumonectomia. In tutti i soggetti sani esaminati così come nella cavità residua dopo pneumonectomia abbiamo rilevato tutti gli artefatti descritti in accordo con i principi fisici degli ultrasuoni. ª

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“…The PCL could be localized on the sonogram via the comet tail artifact produced by the metal hook. 10 After the normal PCL was identified on longitudinal scans, its thickness was measured at a distance of 2.0 cm from the insertion of the distal PCL onto the tibia, corresponding to the mid-portion of the ligament ( Figure 3). Transverse scans were not obtained.…”

Section: Methodsmentioning

confidence: 99%

Ultrasonographic examination of the normal and injured posterior cruciate ligament

Hsu

Tsai

Chen

et al. 2005

J. Clin. Ultrasound

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Purpose. The purpose of the study was to determine the echogenicity and thickness of both the normal and injured posterior cruciate ligament (PCL).Methods. Eight patients with anterior cruciate ligament injury received ultrasonographic evaluation during arthroscopic examination. With the aid of the comet-tail artifact produced by the metal hook during arthroscopic examination, the normal PCL was located on sonograms. Thereafter, 11 patients with PCL injury were examined. In all subjects, the PCL thickness was measured at 2.0 cm proximal from posterior end of the distal PCL inserting onto the tibia.Results. The normal PCL was located just posterior to the posterior tibial intercondylar area. It was hypoechoic and was thickened proximally and tapered distally. The mean thickness of the injured PCL was 0.71 ± 0.12 cm, which was significantly (p < 0.05) greater than that of the normal ligament (0.52 ± 0.08 cm). Different appearances could be observed, including ligamental rupture and avulsion fracture of the tibial insertion of the PCL.Conclusions. The normal PCL appears on longitudinal sonograms as a hypoechoic fan-shape structure.

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Ultrasonic appearance of metallic foreign bodies in parenchymal organs

Cited by 30 publications

References 3 publications

Sonographic diagnosis of foreign bodies of the distal extremities

Sonographic diagnosis of foreign bodies of the distal extremities

Characterization of the normal pulmonary surface and pneumonectomy space by reflected ultrasound

Ultrasonographic examination of the normal and injured posterior cruciate ligament

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