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Real-Time Temporal Maximum-Intensity-Projection Imaging of Hepatic Lesions with Contrast-Enhanced Sonography

¹ Department of Medical Imaging, Toronto General Hospital, University of Toronto, Toronto, Ontario, Canada.
² Present address: Diagnostic Imaging, Foothills Medical Centre, 1403 29 St. NW, Calgary, Alberta T2R 1M5, Canada.
³ Present address: Department of Medicine, Hyogo University, Hyogo, Japan.
⁴ Toshiba Medical Systems, Tokyo, Japan.
⁵ Departments of Medical Biophysics and Medical Imaging, University of Toronto, and Imaging Research, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada.

OBJECTIVE. We sought to perform a preliminary evaluation of temporal maximum intensity projection (MIP) of focal hepatic masses in selected patients. The technique processes real-time contrast-enhanced sonography images by integrating the path of moving bubbles to depict vascular morphology. Following a high-intensity ultrasound pulse that disrupts bubbles within the scan plane, MIP images the trajectories of fresh bubbles replenishing the plane and revealing their course.

CONCLUSION. Vascular morphology is depicted at a level or detail not seen before with sonography. High-frame-rate sequences of less than one second uniquely show arterial structure in liver lesions.

Keywords: contrast agents • liver tumors • maximum intensity projection • microflow imaging • sonography

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				S. R. Wilson, L. D. Greenbaum, and B. B. Goldberg Contrast-Enhanced Ultrasound: What Is the Evidence and What Are the Obstacles? Am. J. Roentgenol., July 1, 2009; 193(1): 55 - 60. [Abstract] [Full Text] [PDF]