 Data Collection Use of CTPEs for each physician was calculated using the number of completed CTPE examinations and the total number of patients seen during the quarter. Yield of CTPEs for acute PE was determined using a previously validated natural language processing tool and reported as a percentage of total CTPEs completed. Adherence to EBG was determined by applying the Wells Criteria and reviewing the serum D-dimer levels if obtained. The discrete criteria making up the Wells Criteria were prospectively documented in the investigators computerized order entry CPOE system at the time of order entry, as previously reported. 