通气-灌注（V/Q）扫描中的热方形征
The Hot Quadrate Sign on a Ventilation-Perfusion (V/Q) Scan.
作者信息
Masih Kabeer, Suthar Pokhraj P, Virmani Sumeet
机构信息
Department of Diagnostic Radiology and Nuclear Medicine, Rush University Medical Center, Chicago, USA.
出版信息
Cureus. 2024 Jul 9;16(7):e64122. doi: 10.7759/cureus.64122. eCollection 2024 Jul.
The hot quadrate sign is defined as an intense arterial enhancement in the hepatic quadrate lobe, most frequently encountered on CT angiograms in patients with central venous occlusion. It has also been described as focal uptake on technetium-99m (Tc99m) sulfur colloid scans. We present an unusual case of focal uptake in the hepatic quadrate lobe on a ventilation-perfusion (V/Q) scan, corresponding to the hot quadrate sign in a 42-year-old patient with chronic kidney disease and central venous occlusion.
热方形征被定义为肝方叶的强烈动脉强化，最常见于中心静脉闭塞患者的CT血管造影中。它也被描述为锝-99m（Tc99m）硫胶体扫描上的局灶性摄取。我们报告了一例42岁慢性肾病合并中心静脉闭塞患者，其通气-灌注（V/Q）扫描显示肝方叶有局灶性摄取，与热方形征相符的罕见病例。
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