使用具有解剖学真实感的肺部模型进行部门间审计。

Heikkinen Jari O, Kuikka Jyrki T, Rautio Pentti J

Department of Nuclear Medicine, Etelä-Savo Hospital District, Mikkeli Central Hospital, Mikkeli, and Department of Clinical Physiology, Kuopio University Hospital and Niuvanniemi Hospital, Kuopio, Finland.

J Nucl Med Technol. 2006 Mar;34(1):34-42.

UNLABELLED

The diagnostic proficiency of nuclear medicine professionals and the accuracy of equipment may be tested with phantoms. All phases of the imaging chain should be included in the external quality assurance of imaging.

METHODS

The aim of this study was to evaluate and compare the quality of nuclear imaging of the lung in Finland. For this purpose, we developed a new anatomically realistic lung phantom. The phantom consisted of plastic containers filled with plastic pellets to imitate the 3-dimensional shape of the lungs. These containers were filled with radioactive liquid and placed inside an anatomically accurate phantom of the chest cavity. The attenuation properties of the phantom were close to those of a real human thorax. Perfusion and ventilation defects were positioned inside the phantom to mimic 2 clinical cases. The phantom was imaged and interpreted as a patient simulation study in 18 Finnish hospitals. Reconstruction, printout, and reporting were according to the clinical routine of each hospital. The quality of the image sets and reports was evaluated and scored from 0 to 10. Additionally, technical performance was evaluated by a nuclear medicine specialist and hospital physicians.

RESULTS

The average score (+/-SD) for overall quality was 7.1+/-1.1 (range, 5.2-8.5). Reports received a score of 7.2+/-1.7 (4.7-10.0); image sets, 7.2+/-1.3 (4.8-9.7), technical evaluation by hospital readers, 6.5+/-2.3 (1.6-9.5); and technical evaluation by a specialist, 7.8+/-1.2 (5.7-10.0).

CONCLUSION

Lung imaging routines and the results of this survey were diverse. None of the participating hospitals routinely used tomography. In planar imaging, the most valuable projections were oblique (left anterior oblique, right anterior oblique, left posterior oblique, and right posterior oblique) and straight sides (right and left). The phantom mimics variable clinical situations well and is suitable for testing of imaging protocols and for proficiency testing of nuclear medicine professionals and equipment. Clinical phantom studies are an effective way of assessing an imaging program.

未标注

核医学专业人员的诊断能力和设备的准确性可用体模进行测试。成像链的所有阶段都应纳入成像的外部质量保证。

方法

本研究的目的是评估和比较芬兰肺部核成像的质量。为此，我们开发了一种新的具有解剖学逼真度的肺部体模。该体模由装满塑料颗粒的塑料容器组成，以模仿肺部的三维形状。这些容器装有放射性液体，并放置在胸腔的解剖学精确体模内。该体模的衰减特性与真实人体胸部相近。在体模内设置灌注和通气缺陷以模拟2个临床病例。在18家芬兰医院，将该体模作为患者模拟研究进行成像和解读。重建、打印输出和报告均按照各医院的临床常规进行。对图像集和报告的质量进行评估并从0到10评分。此外，由一名核医学专家和医院医生对技术性能进行评估。