Abstract
The Japan Radioisotope Association conducted a questionnaire survey to ascertain status of QA/QC activity of PET in Japan. The questionnaire was sent to 277 PET facilities with 116 valid responses(41.9%). The survey revealed that acceptance test of PET was performed by vender in 86.0% and by facility in 7.6% of the scanners. System sensitivity, accuracy of image registration, image homogeneity, accuracy of dead-time correction and accidental coincidence, and accuracy of attenuation and scatter correction was tested in 59.6%, 57.9%, 55.0%, 29.2%, and 28.1% of the PET scanners, respectively. The count normalization and cross calibration was tested once in 3 months in 71.5% of the scanners. Maintenance service contract was present in 93.3%. Normalization factor, cross calibration factor, and SUV were varied from −11 to +20%, from −8 to +54%, and from −20 to +10% between the initial and the last tests. Dose calibrator and well counter was regularly checked in 55.0% and 82.6% of the equipment, respectively.
