Abstract
Purpose: To determine the axial and lateral resolution of a rotating intravascular ultrasound system and the diagnostic implications for the diagnosis of early artherosclerosis.
Methods: The resolution of a 20 MHz rotating transducer was tested in a specially designed high-resolution phantom and in five aortic autopsy specimens with varying degrees of early atherosclerosis.
Results: The best lateral resolution is at the minimal distance between transducer and object. Measurements in the wire phantom showed this to be better than 0.43 mm. This is less than the axial resolution which is better than 0.13 mm. Decreasing lateral resolution with increasing distance between transducer and object is manifested by arcing and overestimation of the extent of focal atherosclerotic lesions.
Conclusion: Axial resolution is significantly better than lateral resolution. Rapid deterioration of lateral resolution affects the diagnostic ability to characterize the extent of early atherosclerosis. Eccentric positioning of the transducer tip, particularly in larger vessels, will therefore influence diagnostic accuracy in vivo.
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References
Bom N, tenHoff H, Lancee CT, Gussenhoven WJ, Bosch JG (1989) Early and recent intraluminal ultrasound devices. Int J Card Imaging 4(2–4):79–88
Vihert AM (1976) Atherosclerosis of the aorta in five towns. Bull World Health Organ 53:501–508
White NW Jr, Yock PG (1989) Intravascular ultrasound: Catheter-based Doppler and two-dimensional imaging. Card Clinics 7(3):525–535
Tabbara M, White R, Cavaye D, Kopchok G (1991) In vivo human comparison of intravascular ultrasonography and angiography. J Vasc Surg 14(4):496–502
Gussenhoven WJ, Essed CE, Frietman P (1989) Intravascular echographic assessment of vessel wall characteristics: A correlation with histology. Int J Cardiovasc Imaging 4:105–116
Engeler CE, Yedlicka JW, Letourneau JG, Castañada-Zúñiga WR, Hunter DW, Amplatz K (1991) Intravascular sonography in the detection of atherosclerosis and evaluation of vascular interventional procedures. AJR 156:1087–1090
Yock PG, Fitzgerald PJ, Sudhir K, Linker DT, White NW, Ports A (1991) Intravascular ultrasound imaging for guidance of atherectomy and other plaque removal techniques. Int J Card Imaging 6:179–189
tenHoff H, Korbijn A, Smit TH, Klinkhamer JFF, Bom N (1989) Imaging artifacts in mechanically driven ultrasound catheters. Int J Card Imaging 4:195–199
St. Goar FG, Pinto FJ, Alderman EL, Fitzgerald PJ, Stinson EB, Billingham ME, Popp RL (1992) Detection of coronary atherosclerosis in young adult hearts using intravascular ultrasound. Circulation 86(3):756–763
Duda SH, Wehrmann M, Erdtmann B, Huppert PE, Claussen CD (1994) Intravascular ultrasound: Value of electronic and mechanical devices for quantifying mild to moderate atherosclerosis. Angiology 45(7):597–603
Crowley RJ, vanBehren PL, Couvillon LA Jr, Mai DE, Abele JE (1989) Optimized ultrasound imaging catheters for use in the ascular system. Int J Card Imaging 4:145–151
Meyer CR, Chiang EH, Fechner KP, Fitting DW, Williams DM, Buda AJ (1988) Feasibility of high-resolution, intravascular ultrasonic imaging catheters. Radiology 168:113–116
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Engeler, C.E., Russell Ritenour, E. & Amplatz, K. Axial and lateral resolution of rotational intravascular ultrasound: In vitro observations and diagnostic implications. Cardiovasc Intervent Radiol 18, 239–242 (1995). https://doi.org/10.1007/BF00239419
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DOI: https://doi.org/10.1007/BF00239419