Objective: To study the effect of fasting on the technical success of abdominal ultrasound examination. Methods:In a randomized, prospective study, 150 patients for abdominal ultrasound were divided into two groups of 75 patients each with instructions to fast for six hours or have normal breakfast respectively. Result:The technical success of the abdominal ultrasound performed by radiologists blinded to the instruction did not differ significantly between the groups.

No abstract

For measuring sagittal instability in the knee joint a radiologic method has been developed which requires no complicated equipment, is easy to apply, and is relatively insensitive to the sources of error commonly associated with determination of sagittal instability, such as difference of flexion angle and changes in the projection. Measurements are made between reference points located in the femur and the tibia. The reproducibility of the method is high enough to make it suitable for testing instability before and after reconstructive surgery. By the use of constructed reference points sagittal instability can be distinguished from rotational instability.

No abstract

Twenty-nine patients with clinical suspicion of iliofemoral venous thrombosis were investigated by duplex-Doppler ultrasound and phlebography. Twenty-two of the patients were proven to have thrombosis in one of the lower limbs by both duplex-Doppler ultrasound and phlebology. Of these, 19 patients had iliofemoral thrombosis. The upper end of the thrombus could be demonstrated with ultrasound in only two patients. It is concluded that duplex-Doppler ultrasound is very reliable for the diagnosis of the thrombotic condition but that for proper determination of the upper end of an iliofemoral thrombosis phlebography is still needed, especially if operative treatment is contemplated.