Inokuchi Yasuhiro, Takashina Tsuneyuki, Hayashi Yusuke, Sakihara Jo, Uematsu Masahiro, Kurosaki Hiromasa
Department of Radiology, Edogawa Hospital, Tokyo, JPN.
Department of Radiology and Radiation Oncology, Edogawa Hospital, Tokyo, JPN.
Cureus. 2024 Apr 10;16(4):e58006. doi: 10.7759/cureus.58006. eCollection 2024 Apr.
Backgrounds and objectives Renal sinus fat (RSF) is an indicator of obesity-related complications. However, the measurement and imaging process are complicated. For a simple measurement of RSF, we focused on the kidney's shape change caused by RSF accumulation. Thus, this study aimed to investigate whether the anteroposterior diameter of the renal sinus (APDRS) on a computed tomography (CT) axial image is useful for evaluating RSF accumulation. Materials and methods The correlation between APDRS and RSF was investigated in 98 outpatients who underwent abdominal CT. In addition, the correlation between APDRS or RSF and obesity indicators (estimated glomerular filtration rate from serum creatinine levels (eGFRcreat), body mass index (BMI), and visceral adipose tissue (VAT)) was also investigated. We classified patients based on the presence or absence of at least one underlying disease (chronic kidney disease (CKD), cardiovascular diseases (CVD), hypertension, and type 2 diabetes (T2D)) and investigated significant differences between the two groups at APDRS and RSF. The intraclass correlation coefficient (ICC) was also calculated for APDRS. Results There was a strong positive correlation between RSF and APDRS (r = 0.802, P < 0.01). The obesity indicators (eGFRcreat, BMI, and VAT) were correlated with RSF and APDRS (P < 0.01). Out of 98 outpatients, 48 had at least one underlying disease. There were statistically significant differences in APDRS and RSF between the patients with and without at least one of the underlying diseases caused by obesity (P < 0.01). The inter-reader ICC for the measurement of the APDRS was 0.98. Conclusions APDRS on a CT axial image may be useful for the evaluation of RSF accumulation.
背景与目的 肾窦脂肪（RSF）是肥胖相关并发症的一个指标。然而，测量和成像过程较为复杂。为了简单测量RSF，我们关注了由RSF积聚引起的肾脏形状变化。因此，本研究旨在探讨计算机断层扫描（CT）轴位图像上肾窦前后径（APDRS）是否有助于评估RSF积聚。材料与方法 对98例接受腹部CT检查的门诊患者，研究APDRS与RSF之间的相关性。此外，还研究了APDRS或RSF与肥胖指标（根据血清肌酐水平估算的肾小球滤过率（eGFRcreat）、体重指数（BMI）和内脏脂肪组织（VAT））之间的相关性。我们根据是否存在至少一种基础疾病（慢性肾脏病（CKD）、心血管疾病（CVD）、高血压和2型糖尿病（T2D））对患者进行分类，并研究两组在APDRS和RSF方面的显著差异。还计算了APDRS的组内相关系数（ICC）。结果 RSF与APDRS之间存在强正相关（r = 0.802，P < 0.01）。肥胖指标（eGFRcreat、BMI和VAT）与RSF和APDRS相关（P < 0.01）。98例门诊患者中，48例有至少一种基础疾病。在有无至少一种由肥胖引起的基础疾病的患者之间，APDRS和RSF存在统计学显著差异（P < 0.01）。测量APDRS的阅片者间ICC为0.98。结论 CT轴位图像上的APDRS可能有助于评估RSF积聚。
