Trends in 3-D CT Postprocessing.

PURPOSE: The increasing number of multidetector CT scanners in radiology departments has intensified demand for 3-D imaging. This study sought to reveal the frequency and type of postprocessing tasks being performed by computed tomography (CT) technologists by discussing the longitudinal results of the American Registry of Radiologic Technologists (ARRT) CT practice analysis surveys from 1993 to 2007. METHOD: In 1993, 2001 and 2007, the ARRT mailed CT job analysis surveys to a national randomized sample of 1000 radiologic technologists per year who were employed full time in CT, for a combined total of 3000. A usable sample of 1476 responses from the 3 surveys revealed technologists' level of responsibility for a variety of CT tasks, including 3-D imaging. RESULTS: The proportion of respondents responsible for 3-D imaging increased from 47% in 1993 to 74% in 2001 and to 82% in 2007 (P< .001). This increase occurred in all employment settings (P < .001) and department sizes (P < .001), including small departments. Daily frequency of occurrence grew from 4% in 1993 to 11% in 2001 and 53% in 2007 (P< .001). CONCLUSION: Routine 3-D postprocessing has become typical practice in radiology CT departments across all employment settings.

Emerging technology and practice: characteristics of PET-CT technologists.

PURPOSE: The purpose of this study was to determine how many and which computed tomography (CT) scans are performed by technologists on positron emission tomography (PET)/CT fusion scanners. MATERIALS AND METHODS: A survey of registrants was conducted by the American Registry of Radiologic Technologists (ARRT). The sample was selected on the basis of disciplines of employment, including nuclear medicine technology (NMT), CT, and fusion. Of 676 technologists with appropriate characteristics (eg, staff technologists), a random sample of 400 was selected. A total of 173 surveys were returned (43%), and 56 respondents were identified as PET-CT technologists. RESULTS: Among PET-CT respondents (n = 56), 52% worked in community or university hospitals, 38% in free-standing centers, and 10% in mobile units. On the basis of the percentage of time (mean = 54%) and the number of patients per week (mean = 25), respondents spent most of their time in PET-CT or NMT. Of 53 CT-only procedures that form the ARRT's CT clinical experience requirements, 18 were identified as requirements respondents could fulfill (ie, they could be performed 3 to 5 times within a 24-month period). The average frequency of performance was at least 1 time in the past 6 months. Quality assurance procedures had higher endorsement rates (mean = 70%) and higher frequencies (mean = 1.7 times in 6 months). More than 35% of respondents could fulfill current CT clinical experience requirements. CONCLUSIONS: Positron emission tomography/CT technologists are mainly performing fusion scans; CT-only scans are not widely performed by PET-CT technologists on fusion scanners; PET-only scans are also rare. Most of the CT-only tasks performed are quality assurance.