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Article type: Research Article
Authors: Jung, E.M.a | Jung, F.b; * | Stroszczynski, C.a | Wiesinger, I.a
Affiliations: [a] Department of Radiology, University Medical Center Regensburg, Germany | [b] Institute of Biotechnology, Molecular Cell Biology, Brandenburg University of Technology, Senftenberg, Germany
Correspondence: [*] Corresponding author: Friedrich Jung, Institute of Biotechnology, Molecular Cell Biology, Brandenburg University of Technology, Senftenberg, Germany. E-mail: dihkf@saarmail.de.
Note: [1] Presented on the 3rd Joint Meeting of ESCHM-ISCH-ISB in Fukuoka, Japan.
Abstract: AIM:To evaluate the additive clinical value of endoluminal contrast enhanced ultrasound (CEUS) after interventional placement of drainages in abdominal fluid collections. MATERIAL/METHOD:Examination of 30 patients using a 1–6 MHz convex probe (Resona 7, Mindray) to locate the fluid collection in B-Mode. Additionally, dynamic endoluminal CEUS with 1 ml sulphur-hexafluoride microbubbles was performed to measure the extent of the percutaneously drained abscesses. Independent assessment of dynamically stored images in PACS in DICOM format. Correlation to reference imaging using computed tomography (CT). RESULTS:A total of 30 patients were examined (17 m, 19–78 years, mean 56.1 years). Drainages were positioned in the liver in 15 cases, in the pelvis after kidney transplantation in 4 cases, close to the spleen in 1 case, and in the abdomen in 10 cases. In all cases abscesses showed marginal hyperaemia with reactive septations in CEUS. The drainage position was assessed by means of B-mode in all cases first and then by CEUS. In 4 cases CEUS showed a fistula to the pleura, in 5 cases to the peritoneum, in 2 cases to the intestine, in 5 cases to the biliary tract, corresponding to the CT. In 2 cases there was a hint of an anastomotic leakage after intestinal anastomosis, which was reliably detected by CT. The drainage was removed in 11 cases within a period of 2 to 5 days after CEUS control, in 9 cases within a period of 5 to 10 days. Another operation was necessary in 3 cases. A new drainage was placed in 2 cases. The required amount of ultrasound contrast medium is 1 ml endoluminally diluted to 9 ml sodium chloride. CONCLUSION:CEUS facilitates the exact localization and characterization of inflammatory abdominal fluid collections. Furthermore, possible fistulas can be detected that cannot be seen with conventional ultrasound.
Keywords: Contrast enhanced ultrasound (CEUS), abdominal drainage, abdominal infections, fluid collection, computed tomography (CT), endoluminal CEUS
DOI: 10.3233/CH-211370
Journal: Clinical Hemorheology and Microcirculation, vol. 80, no. 2, pp. 49-59, 2022
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