References
- Allen K. S., Jorkasky D. K., Arger P. H., et al. Renal allografts. Prospective analysis of Doppler sonography. Radiology 1988; 169: 371
- Chang T. C., Cheng H. H. Recent advances in the use of Doppler wave form indices in the antenatal assessment of intrauterine growth retardation. Aust. N Z J. Obstet. Gynaecol. 1994; 34: 8
- Genkins S. M., Sanfiloppio F. P., Carroll B. A. Duplex Doppler sonography of renal transplants. Lack of sensitivity and specificity in establishing pathologic diagnosis. AJR 1989; 152: 535
- Grant E. G., Tessler F. N., Perella R. R. Clinical Doppler imaging. AJR 1989; 152: 707
- Healy D. A., Neumyer M. M., Atnip R. G., Thiele B. L. Evaluation of celiac and mesenteric vascular diseases with Duplex ultrasonography. J. Ultrasound Med. 1992; 11: 481
- Huisman T. W.A., Stewardt P. A., Wladimiroff J. W., Stijnen T. Flow velocity wave forms in the ductus venosus, umbilical vein and inferior vena cava in normal human fetuses at 12–15 weeks of gestation. Ultrasound Med. Biol. 1993; 19: 441
- Hunink M. G. M., Polak J. F., Barlan M. M., O'Leary D. H. Detection and quantification of carotid artery stenosis. Efficacy of various Doppler velocity parameters. AJR 1993; 160: 619
- Kimme-Smith C., Hussain R., Duerinckx A., Tessler F., Grant E. Assurance of consistent peak-velocity measurements with a variety of duplex Doppler instruments. Radiology 1990; 177: 265
- Li S., Hoskins P. R., Anderson T., McDicken W. N. Measurement of mean velocity during pulsatile flow using time-averaged maximum frequency of Doppler ultrasound wave forms. Ultrasound Med. Biol. 1993; 19: 105
- Mikkonen R. H. M., Kreula J. M., Virkkunen P. J. Reproducibility of Doppler ultrasound measurements. Acta Radiol. 1996; 37: 545
- Mires G., Dempster J., Patel N. B., Crawford J. W. The effect of fetal heart rate on umbilical artery flow velocity wave forms. Br. J. Obstet. Gynaecol. 1987; 94: 665
- Moneta G. L., Taylor D. C., Helton W. S., Mulholland M. W., Strandness D. E. Duplex ultrasound measurement of postprandial intestinal blood flow. Effect of meal composition. Gastroenterology 1988; 95: 1294
- Mostbeck G. H., Gössinger H. D., Mallek R., Siostrzonek P., Schneider B., Tscholakoff D. Effect of heart rate on Doppler measurements of resistive index in renal arteries. Radiology 1990; 175: 511
- Nelson T. R., Pretorius D. H. The Doppler signal. Where does it come from and what does it mean?. AJR 1988; 151: 439
- Özbeck S. S., Aytac S. K., Erden M. I., Sandilek N. U. Intrarenal Doppler findings of upstream renal artery stenosis. A preliminary report. Ultrasound Med. Biol. 1993; 19: 3
- Pozniak M. A., Kelcz F., Stratta R. J., Oberley T. D. Extraneous factors affecting resistive index. Invest. Radiol. 1988; 23: 899
- Sabba C., Merkel C., Zoli M., et al. Interobserver and interequipment variability of echo-Doppler examination of the portal vein. Effect of a cooperative training program. Hepatology 1995; 21: 428
- Schwerk W. B., Restrepo I. K., Stellwaag M., Klose K. J., Schade-Brittinger C. Renal artery stenosis. Grading with image-directed Doppler US. Evaluation of renal resistance index. Radiology 1994; 190: 785
- Snedecor G. W., Cochran W. G. Statistical methods, 6th edn. The Iowa State University Press, Ames, 10, 260, 299, 342
- Tu E. S., Mailis A., Simons M. E. Effect of surgical sympathectomy on arterial blood flow in reflex sympathetic dystrophy. Doppler US assessment. Radiology 1994; 191: 833
- Van Der Woude H.-J., Bloem J. L., Schipper J., et al. Changes in tumor perfusion induced by chemotherapy in bone sarcomas. Color Doppler flow imaging compared with contrast-enhanced MR imaging and three-phase bone scintigraphy. Radiology 1994; 191: 421
- Yarlagadda P., Willoughby L., Maulik D. Effect of fetal heart rate on umbilical arterial Doppler indices. J. Ultrasound Med. 1989; 8: 215