Conventional echotomography and duplex Doppler ultrasonography are noninvasive imaging techniques in measurement of hepatic blood flow. In the period from February 2002 to March 2004, 29,086 patients underwent ultrasound examination at the Institute of Radiology in Novi Sad, and 17,503 presented with symptoms of gastroenterology diseases and/or hepatobiliary tract diseases. 984 patients underwent duplex Doppler sonography. This prospective study included 50 patients with suspected or confirmed diagnosis of portal hypertension. All patients were examined using Siemens Versa Pro (3.5 MHz convex probe: B-mode, color and pulse Doppler). The following parameters were evaluated: Doppler sonoscore, congestion index and portal vein thrombosis. By analyzing gathered data, the diagnosis of portal hypertension was confirmed in 10% of patients at baseline, and in 6% of patients at last follow-up, six months later. Results of this investigation demonstrate the importance of duplex Doppler ultrasonography as an excellent noninvasive diagnostic method used for visualization of the direction and velocity of blood flow, as well as presence of portal vein thrombosis. This imaging modality is used as an initial diagnostic tool in the evaluation of the portohepatic circulation, especially in portal hypertension syndrome and in suspected portal vein thrombosis.

Atherosclerotic disease of extracranial part of carotid arteries primarily affects population of middle-aged and elderly, showing more associated risk factors. Sensitivity and specificity of CDU and MSCTA regarding plaque composition, the degree of stenosis and plaque localization are almost the same. These results and the fact that there are no adverse effects (high radiation dose) compared to MSCTA indicate that CDU should be the initial method in diagnostic algorythm for carotid arteries.

Color Doppler is an extremely valuable diagnostic method in detecting pathology of the lower limb arteries. With high reliability level arterial insufficiency and pathological arterial segments are diagnosed by a duplex-Doppler.

Acute flank pain is commonly caused by urolithiasis. This paper discusses advantages and disadvantages of procedures used for evaluation of acute flank pain. In our institution, the diagnostic algorithm includes ultrasonography and plain film radiography, and unenhanced spiral CT in equivocal cases.

Introduction In everyday gynecological clinical practice imaging modalities are becoming more and more important. Depending on the site of pathology itself, CT and MR have certain advantages and disadvantages, which are important to know in order to choose adequate diagnostic procedure. Diagnosis of gynecological diseases Benign conditions such as myomas, inflammatory processes and genital tract abnormalities are major indications for MR imaging. In oncology, it is necessary to perform staging of the disease by imaging modalities. Tumors of the vagina and vulva are diagnosed by clinical examination and imaging modalities are used for staging. In cervical carcinoma it is very important to define stages of the disease and invasion of the surrounding structures which is better seen on MR, but invasion of parametria can be visualized by CT as well. For endometrial cancer MR imaging is a modality of choice. For ovarian cancer both modalities are in use, CT is less expensive and gives enough information. New possibilities with MR imaging using an endovaginal coil in diagnosis of stress incontinence are also discussed.