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A focused ultrasonic transducer employing quarter wavelength matching technology is compared to one of conventional design. The effect of the 6 db improvement in signal‐to‐noise ratio is demonstrated.
Ultrasonograms of most pseudocysts have a typical appearance — sharply defined, smooth wall, ovoid, located in the region of the pancreas. However, in reviewing the sonographic appearance of pseudocysts, other ultrasonographic characteristics may occasionally be encountered. Eleven patients with...
Gray scale transrectal ultrasonography provides refined visualization of the texture of the prostate and other intrapelvic organs. Diagnostic accuracy of the transrectal scan has been successfully registered at 91% in benign prostatic hyperplasia, 85% in cancer, 89% in prostatitis, and 88% in...
We have been using a high resolution real time ultrasound mechanical sector scanner to visualize the carotid bifurcation. Twenty‐six patients were studied before carotid arteriography for transient ischemic attacks. One bifurcation was not adequately visualized. Of the remaining 51, plaques were...
Cysts arising from the spleen are much less common than those arising from other organs such as kidney, liver, and ovary (1). Hemorrhagic cysts of the spleen are rare (1), but we have encountered two patients with this entity. The ultrasonograms in each patient demonstrated gravity‐dependent...
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