Methods Forty-five patients were either examined on a first, second, or third generation DSCT in an ultra-high-resolution (UHR) temporal bone-imaging mode. On the third generation DSCT system, the tighter focal spot of 0.2 mm(2) removesthe necessity for an additional z-axis-filter, leading to an improved z-axis radiation dose efficiency. Images of 0.4 mm were reconstructed using standard filtered-back-projection or iterative reconstruction (IR) technique for previous generations of DSCT and
a novel IR algorithm for the third generation DSCT. Radiation dose and image quality were compared between the three DSCT systems. Results The statistically significantly highest subjective and objective image quality was evaluated for the third generation DSCT when compared to the first or second generation DSCT systems (all p smaller than 0.05). Total effective dose was 63 %/39 % lower for Saracatinib the third generation examination as compared to the first and second generation DSCT. Conclusions Temporal bone imaging without z-axis-UHR-filter and a novel third generation IR algorithm allows for significantly higher image quality while lowering effective dose JQ-EZ-05 when compared to the first two generations of DSCTs.”
“We investigated the anatomical organization of glomeruli in the antennal lobes
(ALs) of male silkmoths. We reconstructed 10 different ALs and established an identification procedure for individual glomeruli by using size, shape, and position relative to anatomical landmarks. Quantitative analysis of these morphological characteristics supported the validity of our identification strategy. The glomerular organization of the ALs was roughly conserved between different ALs. However, we found individual variations that were reproducibly observed. The combination of a digital atlas with other experimental techniques, such as electrophysiology, optical imaging, selleck screening library and genetics, should facilitate a more in-depth analysis of sensory information processing in silkmoth ALs.”
“Recent studies suggest trends toward more mastectomies for
primary breast cancer treatment. We assessed survival after mastectomy and breast-conserving surgery (BCS) with radiation for early-stage breast cancer among non-selected populations of women and among women similar to those in clinical trials. Using population-based data from Surveillance Epidemiology, and End Results cancer registries linked with Medicare administrative data from 1992 to 2005, we conducted propensity score analysis of survival following primary therapy for early-stage breast cancer, including BCS with radiation, BCS without radiation, mastectomy with radiation, and mastectomy without radiation. Adjusted survival was greatest among women who had BCS with radiation (median survival = 10.98 years).