Optimized Schlieren imaging for real-time visualization of high-intensity focused ultrasound waves.

Objectives: This article presents an low-cost experimental setup for visualizing refraction anomalies caused by high-intensity focused ultrasound (HIFU). The technique is based on Schlieren imaging, commonly used to visualize temperature and pressure differences in a medium. With this setup, double images of the Schlieren or their shadows to be investigated occur, so that the experimental setup is modified to avoid these double image artifacts.

Monitoring of tumor burden in vivo by optical imaging in a xenograft SCID mouse model: evaluation of two fluorescent proteins of the GFP-superfamily.

Background: Mouse models of human-malignant-melanoma (MM) are important tools to study tumor dynamics. The enhanced green fluorescent protein (EGFP) is widely used in molecular imaging approaches, together with optical scanners, and fluorescence imaging.

Purpose: Currently, there are no data available as to whether other fluorescent proteins are more suitable.

[Radiological knowledge management with the help of departmental wikis].

In times of RIS (radiology information system) and KIS (hospital information system) systems, patient-related data are at the radiologist's disposal at the push of a button. However, this is not the case for other important data. The increasing complexity of modern medicine demands that up-to-date information like protocols, SOPs (Standards of Practice), news and modifications are constantly accessible to all employees.

[Imaging in intensive care].

The application of imaging methods in patients that are highly dependent on medical support is limited. Ultrasound has a prominent impact due to its flexibility, bedside availability, rapid results, and cost-effectiveness - especially in the assessment of cardiovascular and abdominal diseases. Ultrasound artifacts at the pleura-air interface play an emerging role in the diagnosis of thoracic disease.