Chau W K, Chan S C
Department of Medicine, Central Clinic and Hospital, Taipei, Taiwan, Republic of China.
Clin Imaging. 1997 Jul-Aug;21(4):276-83. doi: 10.1016/s0899-7071(96)00043-5.
Ultrasound is an effective means of detecting renal stones in patients with hydronephrosis. The filled urinary bladder in a normal person under hydration frequently results in the sonographic appearance of minimal or moderate hydronephrosis. For optimal visualization of stones and associated acoustic shadows, six patients with radiographically opaque renal stones were evaluated with fluid-loaded renal ultrasonography, which was compared to conventional renal sonogram in basal state. Although ultrasound in basal state can be used for detection of intrarenal lithiasis, fluid-challenged renal sonogram appears more accurate for the determination of contour, location, size, and number of small stones. In one case, this fluid-loaded ultrasound well demonstrated the tramline appearance of an isolated renal artery, which mimics stone before fluid challenge.
超声是检测肾积水患者肾结石的有效手段。正常人口服补液后充盈的膀胱常导致超声显示轻度或中度肾积水。为了最佳地显示结石及相关声影，对6例X线不透光肾结石患者进行了液体负荷肾脏超声检查，并与基础状态下的传统肾脏超声检查进行比较。虽然基础状态下的超声可用于检测肾内结石，但液体负荷肾脏超声在确定小结石的轮廓、位置、大小和数量方面似乎更准确。在1例病例中，这种液体负荷超声很好地显示了孤立肾动脉的铁轨样表现，在液体负荷前类似结石。
