目的：通过计算机体层扫描（computed tomography，CT）平扫和三维重建等利用图像后处理系统软件，评估视网膜母细胞瘤（Retinoblastoma，RB）病灶的钙化水平，并探究其与患者性别、眼别、年龄及影像学分期之间的相关性。方法：选取2022年5月—2024年12月经我院眼眶病与眼肿瘤科手术病理证实及临床确诊的108例RB患者127眼进行分析。应用CT重建和工作站分割技术对眼球、肿瘤、钙化进行分割和采用容积定量分析方法，运用R语言进行统计学处理，比较不同性别（男/女）、眼别（左/右）、年龄分层及影像学分期间的钙化最高CT值、肿瘤钙化容积(calcified regional volume，CRV)、肿瘤容积(tumor volume，TV)、患侧容积(eyeball volume，EV)、CRV/EV、TV/EV、CRV/TV比值的差异。结果：不同性别组其EV比较差异有统计学意义（P<0.05）；不同年龄组RB其CRV、EV、CRV/EV比较差异有统计学意义（P<0.05）；影像分期（眼内期、青光眼期、眼外期组）和晶状体位置变化（位置改变、形态位置密度改变、无变化组）的CRV 、TV、CRV/EV、TV/EV差异均有统计学意义（P< 0.05）。结论：RB患者的钙化沉积水平随着病程推进，在眼球内期、青光眼期至眼外期的不同阶段呈现逐级升高的态势。晶状体位置变化随病情进展、RB患者钙化程度逐渐增加。

Objective: To evaluate the calcification level of retinoblastoma (RB) lesions using image post-processing system software, such as that for computed tomography (CT) noncontrast scanning and three-dimensional reconstruction. Additionally, this study aimed to explore the relationship between retinoblastoma (RB) and patient gender (male/female) , as well as the correlation among ocular (left/right), age, and radiographic stage (e.g., international intraocular RB stage).  Methods: The study enrolled 108 patients (127 eyes) with tumors confirmed by both surgical pathology and clinical diagnosis. These patients received treatment at the Orbital Disease and Ocular Oncology Department of Zhongshan Ophthalmic Center, Sun Yat-sen University (ZOC, SYSU) from May 2022 to December 2024. CT reconstruction and workstation segmentation techniques were used to delineate the eyeball, tumour, and calcification. A quantitative volumetric analysis method was applied, and statistical processing was conducted using R language (version 4.2.1). Comparisions were made across different genders (male/female), eye segmentation (left/right), age stratifications, and imaging stages. The t-test was applied to analyze the highest CT value, calcified regional volume (CRV), tumor volume (TV), eyeball volume (EV), CRV/EV ratio, TV/EV ratio, and CRV/TV ratio in these tumor patients. Results: There was no significant differences in CT value, CRV, TV,  CRV/EV ratio, TV/EV ratio, and CRV/TV ratio among patients with different eye sides, genders and age groups (P>0.05). Only EV showed statistical significant across different age groups. Statistically significant changes were observed in CRV, TV, CRV/EV ratio, TV/EV ratio , and CRV/TV ratio with respect to both intraocular stage (including intraocular stage, glaucoma stage, extraocular stage) and lens position changes (inculding position changes, morphological position density changes, no change groups) (P< 0.05), No other statistically significant differences were found (P>0.05). Conclusions: In this group of tumor patients, the level of calcification deposition gradually increased as the disease progressed through the intraocular stage, glaucoma stage, and extraocular stage. Lens positional changes were associated with a gradual increase in the degree of calcification in patients with retinoblastoma (RB) as the disease advanced.