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Titolo:
Tissue harmonic imaging: Is it a benefit for bile duct sonography?
Autore:
Ortega, D; Burns, PN; Simpson, DH; Wilson, SR;
Indirizzi:
Toronto Gen Hosp, Dept Med Imaging, Univ Hlth Network, Toronto, ON M5G 2C4, Canada Toronto Gen Hosp Toronto ON Canada M5G 2C4 k, Toronto, ON M5G 2C4, Canada Univ Chile, Hosp Clin, Serv Radiol, Santiago, Chile Univ Chile Santiago Chile hile, Hosp Clin, Serv Radiol, Santiago, Chile Univ Toronto, Dept Med Biophys, Sunnybrook & Womens Coll Hlth Sci Ctr, Toronto, ON M5G 2C4, Canada Univ Toronto Toronto ON Canada M5G 2C4 i Ctr, Toronto, ON M5G 2C4, Canada
Titolo Testata:
AMERICAN JOURNAL OF ROENTGENOLOGY
fascicolo: 3, volume: 176, anno: 2001,
pagine: 653 - 659
SICI:
0361-803X(200103)176:3<653:THIIIA>2.0.ZU;2-3
Fonte:
ISI
Lingua:
ENG
Soggetto:
OBSTRUCTIVE-JAUNDICE; US; CHOLANGIOCARCINOMA; ULTRASOUND; ACCURACY; LEVEL;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Life Sciences
Citazioni:
16
Recensione:
Indirizzi per estratti:
Indirizzo: Ortega, D Toronto Gen Hosp, Dept Med Imaging, Univ Hlth Network, 200 Elizabeth St, Toronto, ON M5G 2C4, Canada Toronto Gen Hosp 200 Elizabeth St Toronto ON Canada M5G 2C4 nada
Citazione:
D. Ortega et al., "Tissue harmonic imaging: Is it a benefit for bile duct sonography?", AM J ROENTG, 176(3), 2001, pp. 653-659

Abstract

OBJECTIVE. Our purpose was to compare tissue harmonic imaging with conventional sonography of the biliary tract. SUBJECTS AND METHODS. Eighty patients with suspect biliary disease had conventional sonography and tissue harmonic imaging with an ATL 3000 or 5000 scanner in a 6-month interval. Final diagnoses included malignant biliary obstruction (n = 30), choledocholithiasis (n = 16), sclerosing cholangitis (n= 4), normal or nonobstructed ducts (n = 16), and miscellaneous conditions(n = 14). Similar images were taken with each technique in terms of projection, field of view, focal zone selection, and evidence of disease. Two separate observers blinded to patient data and technique reviewed and graded images individually for the appearance of the lumen of the bile ducts. the length of the visible duct, the appearance of the duct wall, the presence ofany intraluminal masses, and the appearance of associated acoustic shadows. Images were graded from zero to 3, with 3 being the best. RESULTS. The median of the 546 tissue harmonic images was one grade higherthan the median for the corresponding conventional images (p < 0.0001). Improvements with tissue harmonic imaging included better sharpness of the duct walls (p < 0.01). a clearer lumen (p < 0.0001), identification of a longer length of the common bile duct (p < 0.0001), and improved detection of intraluminal masses (p < 0.006). Acoustic shadows were better defined and blacker with tissue harmonic imaging (p < 0.007). CONCLUSION. Improvement in contrast and reduction of side lobe artifacts with tissue harmonic imaging enhance visualization of the biliary ducts. Tissue harmonic imaging is now our routine technique for bile duct examination.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 02/07/20 alle ore 21:33:37