Derrick R Siebert

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A new method for trace analysis of gases, based on the pulsed photoacoustic Raman spectroscopy (PARS) technique, is described. The method has been applied to the analysis of mixtures of CH(4) in N(2), CO(2) in N(2), and N(2)O in N(2) at concentrations near 1 ppm. The apparatus used is described in some detail. Means of improving the method's sensitivity as(More)
PURPOSE The aim of this report is to provide a five-year summary of the Minnesota Radiological Society's initiative to send first-year radiology residents to the ACR at the AMCLC. The authors provide an update of the survey data for the first five years (2009-2013) and a report of the ACR membership status of the original 2009 cohort (class of 2012) five(More)
because the image processor usually accommodates their presence. The operator briefly saw the marker wire at the start of the procedure and was able to avoid irradiating the marked area during the intervention by working at different gantry angles. Because no clinical image of the marker was saved, its appearance was recreated using the same fluoroscope and(More)
PURPOSE This study was designed to determine if first-year radiology resident attendance at the ACR AMCLC over a period of 3 years from 2009 to 2011 led to increased resident knowledge regarding the ACR and Minnesota Radiological Society (MRS), and whether resident involvement in the conference would influence their decisions to participate in the ACR and(More)
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