Assessment of Contrast-Enhanced Ultrasound (CEUS) and Computed Tomography (CT) diagnostic accuracy in the evaluation of challenging cystic renal masses.

Purpose: To assess the diagnostic accuracy of contrast-enhanced ultrasound (CEUS) and computed tomography (CT) within Bosniak IIF/III categories.

Methods: After cystic renal mass diagnosis by contrast-enhanced CT, all patients with Bosniak score ≥ II also underwent CEUS between March 2017 and March 2019. Their exams were retrospectively analyzed.

Multislice CT fluoroscopy: technical principles, clinical applications and dosimetry.

Purpose: The aim of this study is describing fluoroscopic techniques with multislice CT during interventional procedures. We emphasize the technical principles of the multislice CT fluoroscopy and the relative advantages in clinical application, in comparison to single slice fluoroCT and conventional CT guided procedures. Other topics are dosimetry and patient's and operator's radioprotection.

Changes of renal resistive index in response to hydration and diuretic administration in normal subjects and in patients with small ureteral stone.

The renal resistive index has been measured before and after hydration and administration of diuretics in persons with normal kidneys and in kidneys with small ureteral stone, either obstructing or nonobstructing, to assess induced flow changes and to identify features differentiating obstructing from nonobstructing stones. In normal kidneys the resistive index was normal (mean, 0.62+/-0.

Ultrasound and Doppler features of accessory spleens and splenic grafts.

16 splenic grafts and 24 accessory spleens were evaluated with ultrasound, colour Doppler and power Doppler imaging, in order to compare the features of splenic grafts and accessory spleens. 12 splenic grafts (11 surgically implanted, 1 islet of splenosis) were detected in eight patients following splenectomy 6-12 months previously. Four of the surgically implanted splenic grafts were found in three patients following splenectomy 16-18 days previously.

Noninvasive in vivo quantitative assessment of fat content in human liver.

Background/aims: Since the introduction of ultrasonography, liver steatosis has become an increasingly frequent diagnosis. Both ultrasonography (US) and computerized tomography (CT) provide qualitative rather than quantitative assessment of fatty infiltration. The objective of this study was to develop a noninvasive method for the quantification of the hepatic fat content in vivo.