Accuracy of computed tomographic colonography in a nationwide multicentre trial, and its relation to radiologist expertise.

Objective: Reports on the accuracy of computed tomographic colonography (CTC) mainly involve series from expert institutions. The aims of this study were to assess CTC accuracy in a nationwide population and to relate it to radiologist performance in their initial training.

Design: Nationwide multicentre trial.

Usefulness of noninvasive tests in nodular regenerative hyperplasia of the liver.

Background: The only way to diagnose nodular regenerative hyperplasia (NRH) is liver biopsy.

Aim: To evaluate in a prospective study the performance of noninvasive liver investigations in patients with NRH.

Methods: All consecutive patients with NRH who were being followed up in our unit from 2004 to 2007 were included.

[Real-time contrast-enhanced ultrasound in the evaluation of focal liver lesions: diagnostic efficacy and economical issues from a French multicentric study].

The recent introduction of high-end ultrasound equipment combined with recent contrast agents provides marked improvements in the characterization of focal liver lesions as previously reported by monocentric studies. The aim of the present study was to evaluate the diagnostic performance of Contrast-Enhanced Ultrasonography (CEUS) using SonoVue as well as its medico-economic value for characterization of focal liver lesions. These nodules were not characterized on previous CT or conventional sonography.

Acute knee trauma: role of ultrasound.

The purpose of this study was to determine the diagnostic accuracy of high spatial resolution ultrasonography (US) in the detection of lipohemarthrosis of the knee and to evaluate this sign as criteria of intra-articular fracture. Forty-eight patients with clinical suspicion of knee fracture were prospectively examined by conventional radiography, sonography examination and computed tomography (CT) within 48 h after trauma in order to depict direct (fracture line) and indirect (lipohemarthrosis) signs of intra-articular fracture. Lipohemarthrosis was defined as a multi-layered collection in the subquadricipital recess.

Fetal extradural hematoma: prenatal diagnosis and postmortem examination.

We report the 1st confirmed case of an extradural hematoma diagnosed in utero by ultrasonography and magnetic resonance imaging at 31 weeks' gestation. No signs of intracranial hemorrhage were found. During pregnancy, the expecting mother suffered from sustained cough, and a blood sample test revealed acute pertussis.