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Titolo:
Real-time compound imaging: Improved visibility of biopsy needles and localization wires as compared to single-line ultrasonography
Autore:
Saleh, A; Ernst, S; Grust, A; Furst, G; Dall, P; Modder, U;
Indirizzi:
Univ Dusseldorf, Inst Diagnost Radiol, D-40225 Dusseldorf, Germany Univ Dusseldorf Dusseldorf Germany D-40225 , D-40225 Dusseldorf, Germany Univ Dusseldorf, Frauenklin, D-40225 Dusseldorf, Germany Univ Dusseldorf Dusseldorf Germany D-40225 , D-40225 Dusseldorf, Germany
Titolo Testata:
ROFO-FORTSCHRITTE AUF DEM GEBIET DER RONTGENSTRAHLEN UND DER BILDGEBENDEN VERFAHREN
fascicolo: 4, volume: 173, anno: 2001,
pagine: 368 - 372
SICI:
1438-9029(200104)173:4<368:RCIIVO>2.0.ZU;2-V
Fonte:
ISI
Lingua:
GER
Soggetto:
INTERVENTIONS; VISUALIZATION; SONOGRAPHY;
Keywords:
ultrasound, guidance; interventional procedures; biopsies; needles; echo; real-time compound;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Citazioni:
20
Recensione:
Indirizzi per estratti:
Indirizzo: Saleh, A Univ Dusseldorf, Inst Diagnost Radiol, Moorenstr 5, D-40225 Dusseldorf, Germany Univ Dusseldorf Moorenstr 5 Dusseldorf Germany D-40225 , Germany
Citazione:
A. Saleh et al., "Real-time compound imaging: Improved visibility of biopsy needles and localization wires as compared to single-line ultrasonography", ROFO-F RONT, 173(4), 2001, pp. 368-372

Abstract

Aim: To compare the visibility of biopsy needles and localization wires using real-time compound imaging (SonoCT (TM)) and single-line ultrasound (SLU). Methods: 14-18G biopsy needles and 5 different localization wires with and without puncture needle were placed into cadaverous muscle in 4 different angulations (0, 12, 18 and 25 degrees). Sonography was performed with anATL HDI 5000 sonography device with a 5-12 MHz linear array using single-line ultrasound and compound imaging with 3 and 9 frames (Comp3 and Comp9) from different viewing angles. Images of the needles were obtained in the longitudinal plane without changing depth, focus position, and gain settings between the measurements. The mean grey values of the needle (gv_n) and of the background (gv_b) were obtained from histograms. Contrast was calculated using the equation (gv_n-gv_b)/gv_b + gv_n). Mean contrast in single-lineand compound images was compared for each angulation using a Student t-test. Results: The mean contrast at 0 was 0.686 in single-line ultrasound. This was significantly higher than in Comp3 (0.62) and Comp9 (0.633) (p<0.05) images. At 12 no significant differences could be observed. At 18<degrees> image contrast was significantly higher in compound images with 0.493 (Comp3) and 0.498 (Comp9), compared to SLU (0.433) (p<0.05). At 25<degrees> the difference between compound images (Comp3: 0.394; Comp9: 0.402) and SLU (0.306) was greatest (p < 0.0001). Conclusion: At 0<degrees> and 12 degrees visibility is very good For all tested materials. For steeper angulations contrast was partly critical in SLU and significantly enhanced with compound imaging. Thus, SonoCT (TM) may be useful to increase precision of ultrasound-guided percutaneous interventions.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 21/01/20 alle ore 06:54:34