The effectiveness of an intravenously injected ultrasound contrast agent (Levovist) to enhance Doppler signals from within and around breast masses will be evaluated. The procedure will be videotaped using a standard protocol, allowing for independent reading as well as intra- and inter- observer reliability measurements. Doppler pulsatility and resistive indices will be recorded as well as the peak systolic frequency and the minimum end diastolic frequency. The region of the breast mass will be examined with color and pulsed Doppler ultrasound, recording arc of vascularity within and around the visualiied mass. A dose of the ultrasound contrast agent will then be injected intravenously as a series of Doppler ultrasound recordings are taken from the mass and/or the adjacent normal portion of the breast. Since the agent lasts for up to six minutes, it will be possible to obtain information in both color and pulsed form, in both the normal and tumor regions. Contrast enhanced color harmonic imaging will also be performed. Specifically, the differences between the time of peak contrast enhancement and the washout of the contrast agent in benign and malignant masses will be measured. The hypothesis is that an ultrasound contrast agent will improve the ability to detect and differentiate tumors compared to images by x-ray mammography, conventional ultrasound and non-enhanced color Doppler. Surgical and pathological results will be used as a gold standard.

Agency
National Institute of Health (NIH)
Institute
National Cancer Institute (NCI)
Type
Research Project (R01)
Project #
5R01CA060854-03
Application #
2654121
Study Section
Diagnostic Radiology Study Section (RNM)
Program Officer
Menkens, Anne E
Project Start
1996-04-01
Project End
2001-01-31
Budget Start
1998-02-01
Budget End
1999-01-31
Support Year
3
Fiscal Year
1998
Total Cost
Indirect Cost
Name
Thomas Jefferson University
Department
Radiation-Diagnostic/Oncology
Type
Schools of Medicine
DUNS #
061197161
City
Philadelphia
State
PA
Country
United States
Zip Code
19107
Forsberg, Flemming; Kuruvilla, Babita; Pascua, Mark B et al. (2008) Comparing contrast-enhanced color flow imaging and pathological measures of breast lesion vascularity. Ultrasound Med Biol 34:1365-72
Forsberg, Flemming; Merton, Daniel A; Goldberg, Barry B (2006) In vivo destruction of ultrasound contrast microbubbles is independent of the mechanical index. J Ultrasound Med 25:143-4
Forsberg, Flemming; Goldberg, Barry B; Merritt, Christopher R B et al. (2004) Diagnosing breast lesions with contrast-enhanced 3-dimensional power Doppler imaging. J Ultrasound Med 23:173-82
Chaudhari, M H; Forsberg, F; Voodarla, A et al. (2000) Breast tumor vascularity identified by contrast enhanced ultrasound and pathology: initial results. Ultrasonics 38:105-9