Comparison of US and unenhanced multi-detector row CT in patients suspected of having acute appendicitis.

Purpose: To prospectively compare the diagnostic performance of ultrasonography (US) and unenhanced multi-detector row computed tomography (CT) in patients suspected of having acute appendicitis by using surgery or clinical follow-up as the reference standard.

Materials And Methods: The institutional review board approved the research protocol. Written informed consent was obtained from all patients or, for those who were adolescents, from their parents.

Acute appendicitis: comparison of low-dose and standard-dose unenhanced multi-detector row CT.

Purpose: To prospectively compare low- and standard-dose unenhanced multi-detector row computed tomography (CT) in patients suspected of having acute appendicitis.

Materials And Methods: Ninety-five consecutive patients underwent two unenhanced multi-detector row CT examinations with 4 x 2.5-mm collimation, 120 kVp, and 30 and 100 effective mAs.

Computed tomography and magnetic resonance imaging in the assessment of acute pancreatitis.

Background & Aims: This study aimed to compare the accuracy of magnetic resonance imaging (MRI) with computed tomography (CT) in assessing acute pancreatitis (AP) and to explore the correlation between MRI findings and clinical outcome.

Methods: Patients with AP were investigated by contrast-enhanced CT and MRI on admission and 7 and 30 days thereafter. MRI was performed with intravenous secretin and contrast medium.

[F-18] fluorodeoxyglucose positron emission tomography as a tool for early recognition of incomplete tumor destruction after radiofrequency ablation for liver metastases.

Background And Objectives: To assess the value of FDG positron emission tomography (PET) for early detection of incomplete tumor destruction after radiofrequency ablation (RFA) for liver metastasis.

Methods: Twenty-eight unresectable liver metastases in 17 patients were treated by RFA. Patients underwent computed tomography (CT) and FDG-PET preoperatively, at 1 week, 1 month, and 3 months postoperatively.

New considerations for an overall approach to treat hepatocellular carcinoma in cirrhotic patients.

Background: Increasing numbers of cases and organ shortage justify reconsidering the global therapeutic approach for hepatocelluar carcinoma in cirrhotic patients.

Methods: Recent literature was reviewed, focused on new therapeutic technologies such as radiofrequency.

Results: For small tumors, liver transplantation offers theoretically the best chance for cure.