ABSTR AC TPurpose Based on evaluation and examination results of students, a necessity for improvement of so far purely instructorbased radiological teaching at the local institution was determined. Aim of our study was to use one out of eight seminars to exemplify adaptation of the teaching concept according to learning theory knowledge, to determine the resulting effects and to interpret them. Materials and methodsThe institutional review board approved the prospective study of the seminar conversion, which was performed after the end of the winter semester 2015/2016. Didactically, this included a course split into online preparation, attendance phase and online follow-up with integration of interactive scaffolding, practice-oriented clinical teaching according to Stanford, Peyton skills transfer and extensive feedback into the attendance phase. At the beginning and at the end of each course, each student filled in identical, standardized questionnaires (n = 256 before and after conversion) using a 5-point Likert scale (1: very good; to 5: deficient) and additionally answered two randomly chosen written examination questions from a content-adapted questionnaire pool of the last five years. For statistical evaluation, the Mann-Whitney U-Test was used for evaluation data and Fisher's Exact test for exam questions.Results Before/after conversion, the subjective total evaluation score of students was 3.22 (mean value) ± 1.51 (standard deviation) / 1.66 ± 0.78 (p < 0.001) and the objective proportion of correctly answered examination questions in the respective cohort at the beginning of the seminar 37.7/ 53.9 % and at the end of the seminar 55.1/84.6 % (p < 0.001). ConclusionThe conversion of the test seminar resulted in both a better evaluation of the teaching unit by the students (evaluation) and a considerably higher rate of correctly answered examination questions from past state examinations (learning success). This supports transferring the concept to comparable teaching units. Ergebnisse Vor/nach Umstellung betrug die subjektive studentische Gesamtbewertung 3,22 (Mittelwert) ± 1,51 (Standardabweichung) / 1,66 ± 0,78 (p < 0,001) und der objektive Anteil korrekt beantworteter Prüfungsfragen in der jeweiligen Kohorte zu Beginn des Seminars 37,7/53,9 % sowie am Ende des Seminars 55,1/84,6 % (p jeweils < 0,001).

At CE-LDCT of the chest, delineation of mediastinal and hilar lymph node groups was superior to UN-LDCT and similar to CE-SDCT. CE-LDCT may be a promising alternative for patients with non-malignant lung disease, unclear chest X-ray findings, or the need for follow-up.

Up to six patients may be served per hour and per CT scanner by using a standard whole body CT polytrauma protocol. Dedicated CT triage protocols may even increase this number. The time portion until images were available at end points was relatively long. A solution has to be developed in order to avoid scenarios of patients being faster at end points than their images.

Although short in-house distances accelerated pretherapeutic treatment processes significantly, both sites remained clearly within the "golden hour". The strongest potential bottleneck was the time interval until images were available at the endpoints.

The diagnostic CT service was basically rendered as relatively inexpensive. In addition to a better financial result, changing the current ICA to DRG shares might also mean a chance for real revenues. However, the attractiveness considerably depends on how the DRG shares are distributed to the different radiation disciplines of one institution.