Department of Radiology, the Armed Forces Capital Hospital, Seongnam.
Department of Radiology, Severance Hospital, Research Institute of Radiological Science, Yonsei University College of Medicine, Seoul, Korea.
Ultrasound Q. 2024 Jun 1;40(2):132-135. doi: 10.1097/RUQ.0000000000000657.
This study aimed to assess the detection rate of small (<10 mm) pancreas cyst and intrareader reliability for cyst size measurements on transabdominal ultrasonography (US). From 2020 to 2022, 194 pancreas cysts in 173 patients, incidentally detected on computed tomography or magnetic resonance imaging, were evaluated on US by 1 of 2 radiologists (readers 1 and 2). Intrareader agreements of cyst size measurements on US were assessed by intraclass correlation coefficient (ICC). Bland-Altman plot was used to visualize the differences between the first and second size measurements in each reader. In this study, readers 1 and 2 evaluated 86 cysts in 76 patients and 108 cysts in 97 patients, respectively. Most of the cysts (191 of 194) were located in the nontail portion of the pancreas. Overall detection rate of pancreas cysts by US was 92.3% (179 of 194). The mean size of measured 179 pancreas cysts was 4.7 ± 1.5 mm. The readers showed excellent intrareader agreements (ICC = 0.925 and 0.960) for cyst size measurements, except for the cysts with size ≤5 mm, where both readers showed good intrareader agreements (ICC = 0.848 and 0.873). The 95% limits of agreement of readers 1 and 2 were 13.8% and 14.9% of the mean, respectively. Therefore, transabdominal US could be a reliable follow-up imaging modality for small (<10 mm) nontail pancreas cysts incidentally detected on computed tomography or magnetic resonance imaging, especially for the cysts with size between 5 and 10 mm. Size changes of the pancreas cysts approximately less than 15% may be within the measurement error.
本研究旨在评估经腹部超声（US）检测直径小于 10mm 的胰腺小囊肿的检出率，以及两位阅片者（阅片者 1 和 2）测量囊肿大小的内部一致性。2020 年至 2022 年，173 例患者的计算机断层扫描或磁共振成像偶然发现胰腺囊肿 194 个，由 2 位放射科医生中的 1 位（阅片者 1 和 2）进行 US 评估。采用组内相关系数（ICC）评估 US 上囊肿大小测量的内部一致性。Bland-Altman 图用于显示每位阅片者两次测量结果之间的差异。在本研究中，阅片者 1 和 2 分别评估了 76 例患者的 86 个和 97 例患者的 108 个囊肿。大多数囊肿（194 个中的 191 个）位于胰腺非尾部。US 对胰腺囊肿的总体检出率为 92.3%（179/194）。测量的 179 个胰腺囊肿的平均大小为 4.7±1.5mm。两位阅片者的囊肿大小测量均具有极好的内部一致性（ICC=0.925 和 0.960），除了直径≤5mm 的囊肿，两位阅片者的内部一致性均为良好（ICC=0.848 和 0.873）。阅片者 1 和 2 的 95%一致性界限分别为平均大小的 13.8%和 14.9%。因此，经腹部 US 可作为一种可靠的随访成像方式，用于检测偶然在计算机断层扫描或磁共振成像上发现的直径小于 10mm 的胰腺非尾部小囊肿，尤其是直径在 5-10mm 之间的囊肿。囊肿大小的变化约小于 15%可能在测量误差范围内。
