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Titolo:
Pulse inversion imaging of liver blood flow - Improved method for characterizing focal masses with microbubble contrast
Autore:
Burns, PN; Wilson, SR; Simpson, DH;
Indirizzi:
Univ Toronto, Dept Med Biophys, Toronto, ON, Canada Univ Toronto Toronto ON Canada to, Dept Med Biophys, Toronto, ON, Canada Sunnybrook & Womens Coll, Hlth Sci Ctr, Toronto, ON, Canada Sunnybrook & Womens Coll Toronto ON Canada Sci Ctr, Toronto, ON, Canada Univ Toronto, Dept Med Imaging, Toronto, ON, Canada Univ Toronto Toronto ON Canada to, Dept Med Imaging, Toronto, ON, Canada Toronto Gen Hosp, Univ Hlth Network, Toronto, ON, Canada Toronto Gen HospToronto ON Canada niv Hlth Network, Toronto, ON, Canada
Titolo Testata:
INVESTIGATIVE RADIOLOGY
fascicolo: 1, volume: 35, anno: 2000,
pagine: 58 - 71
SICI:
0020-9996(200001)35:1<58:PIIOLB>2.0.ZU;2-G
Fonte:
ISI
Lingua:
ENG
Soggetto:
MYOCARDIAL CONTRAST; ULTRASOUND;
Keywords:
harmonic imaging; pulse inversion imaging; ultrasound contrast agents; focal liver masses; liver blood flow;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Life Sciences
Citazioni:
13
Recensione:
Indirizzi per estratti:
Indirizzo: Burns, PN Sunnybrook Hlth Sci Ctr, 2075 Bayview Ave, Toronto, ON M4N 3M5, Canada Sunnybrook Hlth Sci Ctr 2075 Bayview Ave Toronto ON Canada M4N 3M5
Citazione:
P.N. Burns et al., "Pulse inversion imaging of liver blood flow - Improved method for characterizing focal masses with microbubble contrast", INV RADIOL, 35(1), 2000, pp. 58-71

Abstract

RATIONALE AND OBJECTIVES. TO create a microbubble contrast image of vessels that lie below the resolution of an ultrasound system, a technique is required that detects preferentially the agent echo, rejecting that from tissue. Harmonic imaging exploits the nonlinear behavior of microbubbles hut forces a compromise between image sensitivity and axial resolution, The authors describe and evaluate a new method that overcomes this compromise and improves contrast imaging performance: pulse inversion imaging. METHODS. Sequences of pulses of alternate phase are transmitted into tissue and their echoes summed. A prototype scanner equipped with pulse inversion was used to image phantoms and 16 patients with focal liver masses. RESULTS. Pulse inversion images show contrast sensitivity and resolution superior to that of harmonic images. Vessels can be imaged at an incident power sufficiently low to avoid destroying the agent, allowing unique visualization of tumor vasculature, Distinct patterns were seen in hemangiomas, metastases, and hepatocellular carcinomas. CONCLUSIONS. Pulse inversion imaging is an improved bubble-specific imaging method that extends the potential of contrast ultrasonography.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 12/07/20 alle ore 03:00:19