Interventional radiology at the meetings of the German Radiological Society from 1998 to 2008: evaluation of structural changes and radiation issues.
OBJECTIVE
Evaluation of structural changes and the weight given to radiation exposure of interventional radiology (IR) contributions at the Congress of the German Radiological Association from 1998 to 2008.


METHODS
All IR abstracts were evaluated for type of contribution, design, imaging modality, and anatomic region. Weight given to radiation exposure was recorded as general statement, main topic and/or dose reduction. Statistical analysis included calculation of absolute/relative proportions of subgroups and ANOVA regression analyses.


RESULTS
Out of 9,436 abstracts, 1,728 (18%) were IR-related. IR abstracts significantly rose to a maximum of 200 (20%) in 2005 (P = 0.048). While absolute numbers of scientific contributions declined, educational contributions significantly increased (P = 0.003). Computed tomography (CT) and magnetic resonance imaging (MRI) were the main IR imaging modalities, with growing use of CT (P = 0.021). The main body regions were vessels (45%) and abdomen (31%). Radiation exposure was addressed as a general statement in 3% of abstracts, as a main topic in 2%, and for dose reduction in 1%, respectively. During the study interval a significant growth of dose reduction abstracts was observed (P = 0.016).


CONCLUSIONS
IR emerged as a growing specialty of radiology, with a significant increase in educational contributions. Radiation exposure was rarely in the focus of interest but contributions relating to dose reduction demonstrated a significant growth during the study period.                                                     Main Messages                                                  • Interventional radiology emerged as a growing specialty at the German radiological congress.                                                  • Significant increments of educational and prospective research contributions could be observed.                                                  • Despite a significant trend towards computed tomography, radiation exposure of IR was rarely in the focus of interest.                                                  • Contributions related to dose reduction demonstrated a significant growth during the study period.
Institute of Diagnostic Radiology, Interventional Radiology and Nuclear Medicine, Berufsgenossenschaftliches Universitätsklinikum Bergmannsheil GmbH, Ruhr-University of Bochum, Buerkle-de-la-Camp Platz 1, 44789, Bochum, Germany.
Stefan P
SP
Lemburg
Daniela
D
Roggenland
Volkmar
V
Nicolas
Christoph M
CM
Heyer