Windler E E, Lempp F L
Radiology. 1985 Nov;157(2):513-5. doi: 10.1148/radiology.157.2.3901114.
A controlled blind study of 226 patients was performed to determine the advantages of fasting prior to upper abdominal ultrasonography (US) as well as the influence of other factors on image quality. The ratio of weight to height (a reflection of body build) was found to most often correlate negatively with image quality for all organs, followed by age for the biliary tract, pancreas, and kidneys and sex (in males) for the pancreas. Only the biliary tract was shown slightly better as the result of fasting. Images obtained during the afternoon tended to be somewhat better. The authors conclude that upper abdominal US can be performed at any time in patients who have not fasted, as it is primarily other factors that determine image quality. Only if evaluation of the biliary tract is inconclusive need the patient be reexamined after fasting.
对226名患者进行了一项对照盲法研究，以确定上腹部超声检查（US）前禁食的优势以及其他因素对图像质量的影响。体重与身高之比（身体形态的反映）被发现最常与所有器官的图像质量呈负相关，其次是胆道、胰腺和肾脏的年龄以及胰腺的性别（男性）。仅禁食结果显示胆道稍好一些。下午获得的图像往往稍好一点。作者得出结论，未禁食的患者上腹部超声检查可在任何时间进行，因为主要是其他因素决定图像质量。只有在胆道评估不确定时，才需要患者禁食后重新检查。
