Gray scale B scan characteristics of intra‐abdominal cystic masses

Hill, Michael C.; Sanders, Roger C.

doi:10.1002/jcu.1870060404

Cited by 27 publications

(3 citation statements)

References 13 publications

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“…Although the presence of some dependent echoes in these lesions is often seen, it is less common to see a definite fluid-fluid level. In the study by Hill and Sanders involving 119 intraabdominal cystic masses, they found well-defined , fluid-fluid levels only in abscesses and hematomas (2).…”

Section: Discussionmentioning

confidence: 98%

Echogenic fluid: A pitfall in the ultrasonographic diagnosis of cystic lesions

Thurber

Cooperberg

Clement

et al. 1979

J of Clinical Ultrasound

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Although it is well known that biliary sludge can produce fine diffuse echoes within the gallbladder, it is less commonly appreciated that other cystic structures may contain echogenic fluid and therefore be mistaken sonographically for solid lesions. In this article three cases of splenic cysts and one case each of pyrometrocolpos, hydroureter, and pyonephrosis presented with diffuse fine echoes in the fluid. Three of these cases were misinterpreted as a result of this echogenic appearance. These cases serve to emphasize the need for awareness of the echogenicity of some types of fluid and the value of other signs of cystic lesions besides absence of internal echoes.

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Section: Discussionmentioning

confidence: 98%

Echogenic fluid: A pitfall in the ultrasonographic diagnosis of cystic lesions

Thurber

Cooperberg

Clement

et al. 1979

J of Clinical Ultrasound

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“…As mentioned before, partly for this reason the 2.4‐mm objects were excluded in the present study. Furthermore, a study investigating the characteristics of intra‐abdominal cystic masses showed that a variation in the number of internal echoes could be found in all the cystic masses examined (21) . It is therefore an advantage to include a range of contrast levels when studying the ability of a system to reproduce low‐contrast details.…”

Section: Discussionmentioning

confidence: 99%

Comparison of the low‐contrast detectability of two ultrasound systems using a grayscale phantom

Lorentsson

Hosseini

Johansson

et al. 2016

J Applied Clin Med Phys

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The purpose of the present study was to use a commercially available grayscale phantom to compare two ultrasound systems regarding their ability to reproduce clinically relevant low‐contrast objects at different sizes and depths, taking into account human observer variability and other methodological issues related to observer performance studies. One high‐end and one general ultrasound scanner from the same manufacturer using the same probe were included. The study was intended to simulate the clinical situation where small low‐contrast objects are embedded in relatively homogeneous organs. Images containing 4 and 6.4 mm objects of four different contrasts were acquired from the grayscale phantom at different depths. Six observers participated in a 4‐alternative forced‐choice study based on 960 images. Case sample and human observer variabilities were taken into account using bootstrapping. At four of sixteen depth/size/contrast combinations, the visual performance of the high‐end scanner was significantly higher. Thus, it was possible to use a grayscale phantom to discriminate between the two evaluated ultrasound systems in terms of their ability to reproduce clinically relevant low‐contrast objects. However, the number of images and number of observers were larger than those usually used for constancy control.PACS number(s): 87.57.C‐, 87.63.dh

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“…In case 1, the evenly and diffusely distributed fine echoes probably represented debris from chronic infection or inflammation [4]; Echo-free spaces caused by pus occupied most of the mass in case 2; The high internal irregular echoes of the gauze were clearly shown in both cases [5]. Abscess, hematoma, and pancreatic pseudocysts may have similar ultrasonic appearance [6], but high internal irregular echoes are highly specific for retained gauzes.…”

Section: Discussionmentioning

confidence: 99%