Diffusion weighted imaging in cystic fibrosis disease: beyond morphological imaging.

Objectives: To explore the feasibility of diffusion-weighted imaging (DWI) to assess inflammatory lung changes in patients with Cystic Fibrosis (CF) METHODS: CF patients referred for their annual check-up had spirometry, chest-CT and MRI on the same day. MRI was performed in a 1.5 T scanner with BLADE and EPI-DWI sequences (b = 0-600 s/mm).

Motion artefacts in cone beam CT: an in vitro study about the effects on the images.

Objective: In cone beam CT (CBCT), imperfect patient immobility, caused by involuntary movements, is one of the most important causes of artefacts and image quality degradation. Various works in literature address this topic, but seldom is the nature of the movement correlated with the type of artefact and the image degradation in a systematic manner, and the correlation analyzed and explained.

Methods: All three types of movements that can occur during a scan-nodding, tilting and rolling-were applied to a dry skull, in various manners from abrupt to gradual through the entire scan, at different times and angles, over a wide range of displacements.

Metal and motion artifacts by cone beam computed tomography (CBCT) in dental and maxillofacial study.

Objectives: This study aimed at evaluating incidence/degree of metal/motion artifacts and CT-dose-index in oral/maxillofacial examinations using Cone-Beam-CT.

Methods: Interferences caused by metal and motion artifacts were evaluated in 500 patients aged from 6 to 81 years, in dental arches, maxillofacial and splanchocranium Cone-Beam-CT exams. The interferences was divided into four progressive degrees (G0-G3) related to the possibility to answer the clinical query.

Rectal tumour volume (GTV) delineation using T2-weighted and diffusion-weighted MRI: Implications for radiotherapy planning.

Purpose: To compare the rectal tumour gross target volume (GTV) delineated on T2 weighted (T2W MRI) and diffusion weighted MRI (DWI) images by two different observers and to assess if agreement is improved by DWI.

Material And Methods: 27 consecutive patients (15 male, range 27.1-88.

Bile leak after elective laparoscopic cholecystectomy: role of MR imaging.

Increasing hepatobiliary laparoscopic surgeries have lead to a rise in injury to the biliary tree and other complications like bile leak. Ultrasonography (US) and computed tomography (CT) cannot reliably distinguish bile from other postoperative fluid collections. Magnetic resonance (MR) imaging with hepatobiliary agents and MR cholangiopancreatography provide anatomic and functional information that allows for prompt diagnosis and excludes any other concomitant complications.

Self-directed deliberate practice with virtual fiberoptic intubation improves initial skills for anesthesia residents.

Background: Fiberoptic intubation is a core skill in anesthesiology. However, this complex psychomotor skill is challenging to learn in the clinical setting. The goal of this study was to evaluate the Virtual Fiberoptic Intubation (VFI) software as an adjunct to the traditional fibreoptic intubation teaching.