Shibata Shunsuke, Urano Misugi, Kitera Nobuo, Noda Haruka, Isogai Shuntaro, Zhao Wenya, Itoh Toshihide, Kawai Tatsuya, Hiwatashi Akio
Department of Radiology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan.
Department of Radiology, Nagoya City University Hospital, Nagoya, Japan.
Radiol Case Rep. 2024 Aug 10;19(11):4721-4724. doi: 10.1016/j.radcr.2024.07.122. eCollection 2024 Nov.
A 77-year-old woman presented to our hospital with a 2-week history of fever, headache, and induration along the bilateral superficial temporal arteries (STAs). The color Doppler ultrasonography of the STA showed a hypoechoic mural thickening surrounding a residual color flow. A contrast-enhanced photon-counting detector (PCD) CT demonstrated mural thickening and stenosis of the bilateral STAs. The patient underwent a biopsy of the right STA. Histopathological findings were consistent with giant cell arteritis (GCA). The patient's symptoms were temporarily relieved after initiation of steroid treatment, but jaw claudication occurred 2 months later. Contrast-enhanced CT showed improved vascular abnormalities of the STAs but new mural thickening and stenosis of the bilateral maxillary artery. Due to its higher resolution, image contrast, and lower noise, PCD-CT may have great potential in detecting, diagnosing, and monitoring GCA.
一名77岁女性因发热、头痛及双侧颞浅动脉（STA）硬结2周前来我院就诊。STA的彩色多普勒超声显示低回声壁增厚，周围有残余血流信号。对比增强光子计数探测器（PCD）CT显示双侧STA壁增厚及狭窄。患者接受了右侧STA活检。组织病理学结果符合巨细胞动脉炎（GCA）。患者在开始使用类固醇治疗后症状暂时缓解，但2个月后出现颌部跛行。对比增强CT显示STA的血管异常有所改善，但双侧上颌动脉出现新的壁增厚及狭窄。由于具有更高的分辨率、图像对比度和更低的噪声，PCD-CT在检测、诊断和监测GCA方面可能具有巨大潜力。
