Background/Objectives: To evaluate the influence of different DIXON contrasts on the quality of subtraction images in dynamic breast MRI using maximum intensity projections (MIPs). Methods: This retrospective study included n = 40 women (median age: 53.5 years, range 23–83) undergoing clinically indicated breast MRI (3T). For each MRI examination, two independent readers individually evaluated GBCA-enhanced subtraction MIPS for different timepoints (n = 5) and DIXON contrasts (n = 4) per breast, resulting in a total of 800 individual evaluations. Evaluations comprised (a) qualitative measures, using Likert-scores for artefact strength, breast parenchyma visibility, lesion visibility and reading confidence; and (b) signal intensity, measured in three regions of interest with the apparent signal-to-noise ratio (aSNR) and apparent contrast-to-noise ratio (aCNR) calculated. The evaluation results were analysed to identify differences between DIXON contrasts. Results: The “only water” DIXON contrast at ~120s after GBCA injection achieved the highest lesion conspicuity and reading confidence scores and lowest artefact scores; however, its performance was not statistically significant (p > 0.05) compared to the “in-phase” and “opposed-phase” subtractions. The aCNR at the second timepoint was slightly, but not significantly (p > 0.05), lower than the first timepoint, whilst aSNR increased significantly from the first to second timepoint in all contrasts. Conclusions: Subtraction MIPs derived from the “only water” DIXON contrast achieved the highest qualitative scoring for lesion conspicuity and confidence, with the aSNR increasing and aCNR decreasing between the first and second timepoints.
Die extrakranielle Carotisstenose (Verengung der Halsschlagader) gilt mit weltweit über einer Milliarde Betroffenen als Volkskrankheit, wobei in Deutschland etwa 30
Die Behandlung des abdominalen Aortenaneurysmas (AAA) unterliegt in Deutschland einer intensiven Regulierung durch Strukturreformen, Mindestmengenempfehlungen und Qualitätssicherungsrichtlinien. Ziel dieses Berichts ist es, einen geschlechter- und indikationsstratifizierten Einblick in die bundesweite Versorgungsrealität des Jahres 2024 zu geben. Deskriptive Registerstudie zur invasiven Versorgung des AAA mittels endovaskulärer (EVAR) oder offen-chirurgischer Behandlung (OAR) im Zeitraum vom 01.01.2024 bis 31.12.2024. Eingeschlossen wurden Daten aus 166 teilnehmenden Zentren für insgesamt 5207 Patient:innen (14,5
