Groell R, Machan L, Schaffler G J, Uggowitzer M, Peichel K H
Department of Radiology, University Hospital, Graz, Austria.
Acta Radiol. 1997 Nov;38(6):982-5. doi: 10.1080/02841859709172114.
To determine interobserver variability in the morphometric measurement of abdominal organs with US and spiral CT, and to compare the results obtained with these two modalities.
US and spiral CT examinations of the abdomen were performed in 25 patients. In each patient, 13 defined distances were measured in the liver, spleen and both kidneys with US and spiral CT by two pairs of radiologists in a blinded manner. The interobserver variations of these measurements were evaluated for the US and CT examinations, and the data of both modalities were compared with one another.
The measurement of distances in the abdomen with US and spiral CT is subject to considerable interobserver variability in both modalities. The relative interobserver variations showed marked differences, according to which distance was measured. The average interobserver variations were higher in US than in CT. A direct comparison of US and spiral CT revealed that distances obtained with CT frequently exceeded those obtained with US.
Morphometric measurements of abdominal organs with US and with spiral CT showed considerable differences. The follow-up examinations should therefore be performed with the same imaging modality as used in the original examination.
确定超声（US）和螺旋CT对腹部器官进行形态测量时观察者间的变异性，并比较这两种检查方式所获得的结果。
对25例患者进行腹部超声和螺旋CT检查。在每位患者中，两对放射科医生以盲法分别用超声和螺旋CT测量肝脏、脾脏和双肾的13个特定距离。评估超声和CT检查中这些测量值的观察者间变异，并将两种检查方式的数据相互比较。
超声和螺旋CT对腹部距离的测量在两种检查方式中均存在相当大的观察者间变异性。根据所测量的距离不同，观察者间相对变异显示出明显差异。超声检查中观察者间的平均变异高于CT检查。超声与螺旋CT的直接比较显示，CT所测得的距离常常超过超声所测得的距离。
超声和螺旋CT对腹部器官的形态测量显示出相当大的差异。因此，随访检查应采用与初次检查相同的成像方式。
