Okuda K, Kobayashi S, Hayashi H, Nakajima K, Ohtake Y, Yoshida H, Kashima T, Irie Y
First Department of Medicine, Second Department of Surgery, Chiba University School of Medicine, Chiba, Japan.
Acta Radiol. 2003 Mar;44(2):151-3. doi: 10.1080/j.1600-0455.2003.00046.x.
Little is known about radiological aspects of hepatic artery calcification. For this reason, the sonographic features of calcified hepatic arteries were studied in patients with chronic renal failure who frequently develop tissue calcification due to hyperparathyroidism.
Ultrasound was performed in 314 patients on dialysis who underwent examination of the liver, spleen and kidney twice in the past 4 years and were reevaluated with particular attention to acoustic shadowing. Abdominal CT was carried out in 219 of these 314 patients, and ultrasound findings were reevaluated with reference to CT findings.
A large acoustic shadow was seen in the hilum that corresponded to the calcified hepatic artery on CT in 8 patients, and in another 9, a similar large shadow was seen in the hilum without CT confirmation. Acoustic shadows of various sizes were definitely or most likely due to arterial calcification within the liver in 36 patients. The strength of shadow depended on the angle at which the ultrasound beam hit the artery. Probable calcification of small arteries accompanying portal veins was seen in 70 patients. These changes are different from those due to pneumobilia and biliary tract diseases.
Calcification of the hepatic artery can be identified by its acoustic shadow.
关于肝动脉钙化的放射学特征，目前所知甚少。因此，我们对慢性肾衰竭患者的钙化肝动脉超声特征进行了研究，这类患者常因甲状旁腺功能亢进而出现组织钙化。
对314例接受透析的患者进行超声检查，这些患者在过去4年里曾两次接受肝脏、脾脏和肾脏检查，并在复查时特别关注声影情况。这314例患者中有219例进行了腹部CT检查，并根据CT检查结果对超声检查结果进行了重新评估。
8例患者肝门处可见一个大的声影，CT检查显示其与钙化的肝动脉相对应；另有9例患者肝门处可见类似的大阴影，但未得到CT证实。36例患者肝脏内不同大小的声影肯定或极有可能是由动脉钙化所致。声影的强度取决于超声束撞击动脉的角度。70例患者门静脉伴行的小动脉可能出现钙化。这些变化与由气腹和胆道疾病引起的变化不同。
肝动脉钙化可通过其声影识别。
