Department of Veterinary Medicine, College of Veterinary Medicine, National Chung Hsing University, Taichung, Taiwan.
Veterinary Medical Teaching Hospital, College of Veterinary Medicine, National Chung Hsing University, Taichung, Taiwan.
Vet Q. 2023 Dec;43(1):1-7. doi: 10.1080/01652176.2023.2177773.
Renal cortical anisotropic backscatter artifact (CABA) is a hyperechoic region of the renal poles where the insonation of sound beams is perpendicular to the renal tubules within the renal cortex.
To determine whether renal CABA can be observed in healthy cats and to compare the echogenicity of renal CABA with that of the spleen and liver.
Images of the spleen, liver, kidneys, and urinary bladder were acquired from 30 clinically healthy cats with renal CABA. Echogenicity differences among organs and echo scores within urine were recorded and analyzed. All ultrasound images were acquired using a 7.2-14-MHz linear transducer. Univariate logistic regression was used to assess the associations between the presence of renal CABA and various variables.
The prevalence of the renal CABA was 86.7% (26/30) and 93.3% (28/30) according to different observers. The reproducibility of renal CABA is substantial to excellent. The renal CABA echogenicity was greater or equal to the spleen and greater than the hepatic echogenicity in 90.0% of cats (27/30). For comparison with the spleen and liver, there were three and six combinations of echogenicity differences using the CABA and non-CABA regions, respectively. The renal cortical echogenicity in the CABA region was higher than the liver in all subjects. Renal CABA was not associated with age, body weight, gender, body condition score, or lipid droplets in the urinary bladder.
Renal CABA was present in most healthy cats and could be used for echogenicity comparisons with the liver and spleen.
肾皮质各向异性反向散射伪像（CABA）是肾脏两极的一个高回声区域，在该处声束的照射与肾皮质内的肾小管垂直。
确定健康猫是否可以观察到肾 CABA，并比较肾 CABA 的回声与脾脏和肝脏的回声。
对 30 只具有肾 CABA 的临床健康猫的脾脏、肝脏、肾脏和膀胱的图像进行采集。记录和分析器官之间的回声差异和尿液内的回声评分。所有超声图像均使用 7.2-14MHz 线性换能器获取。单变量逻辑回归用于评估肾 CABA 的存在与各种变量之间的关联。
根据不同观察者，肾 CABA 的患病率分别为 86.7%（26/30）和 93.3%（28/30）。肾 CABA 的可重复性为中等至极好。在 90.0%（27/30）的猫中，肾 CABA 的回声强度大于或等于脾脏，且大于肝脏回声强度。与脾脏和肝脏相比，分别使用 CABA 和非 CABA 区域有三种和六种回声差异组合。在所有对象中，CABA 区域的肾皮质回声均高于肝脏。肾 CABA 与年龄、体重、性别、身体状况评分或膀胱内的脂质滴无关。
大多数健康猫存在肾 CABA，可用于与肝脏和脾脏进行回声比较。
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