Diagnosing Pulmonary Embolism With Computed Tomography Pulmonary Angiography: Diagnostic Accuracy of a Reduced Scan Range.

PURPOSE: Computed tomography pulmonary angiography (CT-PA) is frequently used in the diagnostic workup of pulmonary embolism (PE), even in highly radiosensitive patient populations. This study aims to assess CT-PA with reduced z -axis coverage (compared with a standard scan range covering the entire lung) for its sensitivity for detecting PE and its potential to reduce the radiation dose. MATERIALS AND METHODS: We retrospectively analyzed 602 consecutive CT-PA scans with definite or possible PE reported. A reduced scan range was defined based on the topogram, where the cranial slice was set at the top of the aortic arch and the caudal slice at the top of the lower hemidiaphragm. Locations of emboli in relation to the reduced scan range were recorded. RESULTS: We included 513 CT-PA scans with definite acute PE in statistical analysis. Patients' median age was 66 (52 to 77) years, 46% were female. Median dose length product was 270.8 (111.3 to 503.9) mGy*cm. Comparing the original and reduced scan ranges, the mean scan length was significantly reduced by 48.0±8.6% (26.8±3.0 vs. 13.9±2.6 cm, P <0.001). Single emboli outside the reduced range in addition to emboli within were found in 15 scans (2.9%), while only 1 scan (0.2%) had an embolus outside the reduced range and none within it. The resulting sensitivity of CT-PA with reduced scan range was 99.81% (95% confidence interval: 98.74%-99.99%) for detecting any PE. CONCLUSION: A reduced scan length in CT-PA, as defined above, would substantially decrease radiation dose while maintaining diagnostic accuracy for detecting PE.

Health-related quality of life: a population based study from Slovenia.

OBJECTIVES: Health status is represented by people's subjective assessment of their sense of well-being and ability to perform social roles and has been well accepted as a health indicator of different populations. The aim of this study was to determine health-related quality of life in Slovenian population. METHODS: We performed a cross-sectional postal survey in a random stratified sample of 1,000 adult Slovenian inhabitants. The questionnaire consisted of the respondents' demographic data (sex, age, education level, employment status, living environment), self-reported chronic conditions, self-reported use of health services and EQ-5D instrument for measuring quality of life. RESULTS: The response rate was 41% (53.1% men, mean age 51.5 years). Respondents reported most problems in the pain dimension of EQ-5D (59.3%), following by mobility (30.4%), anxiety/depression (30.3%), daily activities (29.8%) and self-care (9.0%). At least one moderate problem was reported by 272 (66.3%) respondents. Independent factors, associated with problems in any EQ-5D dimension were primary and vocational education, older age, high blood pressure, rheumatic diseases, back problems, anxiety/depression, a visit to the emergency department in the past year, and a house visit from a family doctor in the past year. CONCLUSIONS: The present study showed that the health-related quality of life of the Slovenian inhabitants is lower than the one found in some other European countries. This finding is surprising and also worrying. Because we cannot find any perceptible reason for this observation, larger and prospective studies are needed to confirm those results and to determine the reasons for that.