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Studies on the differential diagnosis of tumors by 2D color Doppler imaging: Basic studies on flow assessment analysis and clinical studies on color Doppler findings on breast tumors



Studies on the differential diagnosis of tumors by 2D color Doppler imaging: Basic studies on flow assessment analysis and clinical studies on color Doppler findings on breast tumors



Sapporo Medical Journal 61(5-6): 313-324



Two-dimensional colorflow Doppler imaging shows abdominal and peripheral circulations, which is a valuable sign for diagnosis of tumors. The authors examined the performance of the Acuson 128/XP 10 fitted with the 7 MHz linear array probe. A Dansk Dopplerfantom and ATS Urethan-based Phantom confirmed the general accuracy of the Acuson 128/XP 10; flow velocity determinations were more accurate in pulsed Doppler mode than colorflow mode, though it consistently showed speeds some 20% higher than indicated by the Doppler fantom. Maximum arterial velocity (V-max) was higher (p lt 0.001) in malignant (n=39) than in benign (n=22) breast tumors. The resistance index (R.I.) of all was generally higher in malignant masses; V-min/V-max wa not significant. The color signal ratio, the area of the color indicating the blood flow divided by the cross-sectional area of the mass, was higher in malignant masses. Striking correlations were obtained between pathohistologic findings and Doppler data in all types of breast tumors. Scirrhous carcinomas showing abundant color signals invariably contained increased amounts of fresh interstitial elements, suggesting active growth. Tumors with lower-intensity color signals or without any color signals had few fresh interstitial elements and only contained proprietary connective tissue. In summary, 2D color Doppler sonography is a sensitive method for observation of blood flow in tumors. The excellent correlation of computed sonography findings with pathohistologic findings suggest great promise for this method in the differential diagnosis of tumors.

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