OBJECTIVE: To determine the role of transrectal ultrasound, especially in association with color Doppler, in the diagnosis of prostate cancer. MATERIALS AND METHODS: Eighty-four cases of patients who underwent transrectal biopsy were prospectively analyzed. In all patients, besides the traditional gray-scale sonogram, color Doppler study was performed in search of hypervascular foci. The result...

Using an ultrasonic dynamic flow imager that displays both soft tissues and color-coded flow in the same two-dimensional slice, we were able to display neovascularity in a rabbit VX2 carcinoma. Intravenous infusion of epinephrine altered the flow dynamics in two arteries, one within the tumor and one at the periphery. Further, we were also able to visualize areas of multidirectional flow presum...

Lower extremity's venous pathology was traditionally investigated by intravenous venography. Nowadays Color Doppler flow imaging is widely accepted as a well established, noninvasive method for the evaluation of deep pelvic and lower extremity's venous system. The vast majority of authors conclude that the method can safely replace diagnostic venography in all patients with venous thrombosis, t...

The patient was a 19-year-old man who was examined due to persistent penile erection, which appeared following a blow to the perineal region during work. Color Doppler ultrasonography of the corpora cavernosa revealed a cavity in one part of the cavernous artery that suggested a blood leak, and a diagnosis of high flow type priapism due to trauma was made. Bilateral internal pudendal arteriogra...

Trophoblastic diseases are mainly hydatidiform mole and choriocarcinoma, where the latter is usually the sequela of molar pregnancy and malignant systemic disease with general metastases destructing various tissues and organs till she die. High level urinary hCG, real-time B-mode and color Doppler imaging detect hydatidiform mole in early gestation, postmolar persistent trophoblastic disease is...

OBJECTIVES To observe the phenomenon of human ejaculation dynamically using color Doppler ultrasonography. METHODS Human ejaculation was observed using transrectal color Doppler ultrasonography in a healthy man and a patient with retrograde ejaculation. Ejaculation was induced manually with audiovisual sexual stimulation. The ejaculatory phenomenon was analyzed and compared with that of retro...