[Project Report: Evaluation of the Practical Year (PY) at the Charité Medical School, University Medicine Berlin].

Background: In Germany, the final year of medical school consists of a series of clinical externships termed "Practical Year" (PY). Logbooks have been introduced to document the clinical experience and the value of the teaching program (First Ordinance amending the Licensing Regulations for Physicians, July 14, 2012). However, little is known about how PY education is experienced by students, what problems they face, what support they seek to manage their problems, and how the logbooks contribute to training.

Radiation and Brain Tumors: An Overview.

The use of radiation is an essential part of both modern cancer diagnostic assessment and treatment. Next-generation imaging devices create 3D visualizations, allowing for better diagnoses and improved planning of precision treatment. This is particularly important for primary brain cancers such as diffuse intrinsic pontine glioma or the most common primary brain tumor, glioblastoma, because radiotherapy is often the only treatment modality that offers a significant improvement in survival and quality of life.

Observation of an optical spring with a beam splitter.

We present the experimental observation of an optical spring without the use of an optical cavity. The optical spring is produced by interference at a beam splitter and, in principle, does not have the damping force associated with optical springs created in detuned cavities. The experiment consists of a Michelson-Sagnac interferometer (with no recycling cavities) with a partially reflective GaAs microresonator as the beam splitter that produces the optical spring.

Dual Energy CT - a Novel Technique for Diagnostic Testing of Fragility Fractures of the Pelvis.

The incidence of fragility fractures of the pelvis is increasing. Established methods to diagnose this condition include X-rays, computed tomography (CT) and magnetic resonance imaging (MRI). Dual energy CT (DECT) is a modern technology for the imaging of bone oedema/bruises and has been used in injuries of the extremities and spine.

[A rare case of coecal volvulus after colonoskopy due to a mobile coekum - diagnosis, surgical therapy and postoperative complications].

Colonoscopy, either performed as screening or as a therapeutic proceedure, is, in general, very safe with only a few cases of serious complications. Most cases of bleeding after endoscopic polypectomy can be safely managed endoscopically. The rare cases of colonic perforations still have to be managed by surgical intervention.