Detection of pulmonary nodules with scoutless fixed-dose ultra-low-dose CT: a prospective study.

Objectives: To determine the accuracy of scoutless, fixed-dose ultra-low-dose (ULD) CT compared to standard-dose (SD) CT for pulmonary nodule detection and semi-automated nodule measurement, across different patient sizes.

Methods: Sixty-three patients underwent ULD and SD CT. Two readers examined all studies visually and with computer-aided detection (CAD).

Accuracy of whole-body diffusion-weighted MRI (WB-DWI/MRI) in diagnosis, staging and follow-up of gastric cancer, in comparison to CT: a pilot study.

Background: Accurate staging of patients with gastric cancer is necessary for selection of the most appropriate and personalized therapy. Computed tomography (CT) is currently used as primary staging tool, being widely available with a relatively high accuracy for the detection of parenchymal metastases, but with low sensitivity for the detection of peritoneal metastases. Magnetic resonance imaging (MRI) with diffusion-weighted imaging (DWI) has a very high contrast resolution, suggesting a higher diagnostic performance in the detection of small peritoneal lesions.

Whole-body diffusion-weighted MRI for operability assessment in patients with colorectal cancer and peritoneal metastases.

Background: Correct staging of patients with colorectal cancer is of utmost importance for the prediction of operability. Although computed tomography (CT) has a good overall performance, estimation of peritoneal cancer spread is a known weakness, a problem that cannot always be overcome by Fluorine-18 fluorodeoxyglucose positron emission tomography/computed tomography (F-FDG-PET/CT); especially in infiltrative and miliary disease spread. Due to its high spatial and contrast resolution magnetic resonance imaging (MRI) with diffusion-weighted imaging (DWI) might have a better performance.

Sinochoanal polyp and its variant, the angiomatous polyp: MRI findings.

The angiomatous polyp corresponds to the vascular compromised nasochoanal part of a sinochoanal polyp. We describe the MRI characteristics of such lesions in four patients. All patients had an angiomatous polyp, in three cases as part of an antrochoanal polyp, and in one case as part of a sphenochoanal polyp.

CT findings in laryngeal chondroradionecrosis.

The progressive CT features of the laryngeal framework and soft tissues in a case of laryngeal chondroradionecrosis are described. The differential diagnosis with tumor recurrence was at first uneasy, but the protracted history evolution of the tissue changes on CT eventually allowed correct diagnosis.

Appendicitis after appendectomy: CT diagnosis.

This article presents a case of appendicitis 7 years after open appendectomy. Together with the apparent CT findings we discuss the current literature of this issue.

Intrahepatic splenosis: imaging features.

We report a patient who presented with asymptomatic focal liver lesions and in whom a diagnosis of intrahepatic splenosis was made. This rare condition mostly occurs in patients who previously underwent splenic trauma or surgery. Magnetic resonance imaging (MRI) characteristics suggesting this diagnosis are described.

Extraorbital inflammatory pseudotumor of the head and neck: CT and MR findings in three patients.

We review the clinical history and imaging (CT and/or MR) studies in three patients with histologically proved extraorbital inflammatory pseudotumor of the head and neck. The imaging findings in all three cases were nonspecific, mimicking a malignant tumor or granulomatous disease.

Squamous cell carcinoma of the sinonasal cavities.

Squamous cell carcinoma of the sinonasal cavity is an uncommon neoplasm. The symptoms of this tumor are aspecific, and the diagnosis is often made in an advanced stage of disease. Imaging is necessary for evaluating paranasal extension and possible intracranial spread, orbital involvement, infratemporal extension, spread to the nasopharynx, oropharynx, or oral cavity, and spread along neurovascular bundles or perineural spread.

Computed tomography of laryngeal carcinoma: technique, imaging findings and implications for radiation therapy.

Optimal radiological visualisation of laryngeal carcinoma demands for a tailored imaging technique. The technique for computed tomography of the larynx is reviewed, and imaging findings in laryngeal carcinoma are described. The application of CT-findings for selection of patients into the favourable group for radiation therapy is discussed.

Orbital fat edema in anorexia nervosa: a reversible finding.

Orbital fat edema was found in a patient with long-standing severe anorexia nervosa. The changes disappeared after the patient gained weight. The underlying mechanisms remains unexplained, but the changes most likely coincide with the disappearance of fat tissue and the appearance of edema following disturbance of the electrolyte/fluid balance.