Arterial imaging with a new forward-viewing intravascular ultrasound catheter, I: Initial studies

James L. Evans*, Kok Hwee Ng, Michael J. Vonesh, Barry L. Kramer, Sheridan N. Meyers, Terry A. Mills, Bonnie J. Kane, William N. Aldrich, Yue Teh Jang, Paul G. Yock, Michael D. Rold, Sanford I. Roth, David D. McPherson

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

43 Scopus citations


Background: Intravascular ultrasound (IVUS) of arteries is limited by the inability of current instruments to visualize beyond the catheter tip. We have developed a prototype 4-mm-diameter forward-viewing IVUS catheter (Cardiovascular Imaging Systems, Sunnyvale, Calif) that has the ability to provide B-mode cross-sectional ultrasound data for a distance of up to 2 cm distal to the catheter tip. Methods and Results: To study the utility of this device, a 20-MHz forward-viewing IVUS catheter was used to examine 13 arterial segments (5 human femoral arteries, 1 human carotid artery, 7 canine arteries) in vitro and 1 phantom. After imaging, all data were compared with histology (Histo). In all cases, the IVUS catheter provided forward-viewing images corresponding to the arterial geometry and demonstrated vascular landmarks and atherosclerotic lesions. There was a good correlation between Histo-determined luminal diameters (LD) and IVUS-determined diameters for a distance of 14 mm ahead of the catheter tip: IVUS LD=1.0 Histo LD+1.3 (r=.87). Conclusions: These preliminary data suggest that a forward-viewing IVUS catheter is feasible, accurate, and useful for evaluation of arterial geometry distal to the catheter tip.

Original languageEnglish (US)
Pages (from-to)712-717
Number of pages6
Issue number2
StatePublished - Feb 1994


  • catheters
  • imaging
  • ultrasonics

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine
  • Physiology (medical)


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