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南京医科大学学报(自然科学版) 第46卷第3期
·324 · Journal of Nanjing Medical University(Natural Sciences) 2026年3月
·专题研究:肿瘤·
IDEAL⁃IQ及IVIM定量参数评价B⁃ALL患儿危险度分层及预测
早期化疗反应的初步研究
杨 洁 ,孙惠苗 ,杨 宏 ,孙梦远 ,程艳丽 ,王思洁 3*
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山西省儿童医院(山西省妇幼保健院)磁共振室,山西 太原 030013;血液科,科教科,山西 太原 030013
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[摘 要] 目的:探讨非对称采集与迭代最小二乘估算法迭代水脂分离方法(axial iterative decomposition of water and fat with
echo asymmetrical and least⁃squares estimation quantitation sequence,IDEAL⁃IQ)联合体素内不相干运动扩散加权成像(intravoxel
incoherent motion,IVIM)定量参数评价急性B淋巴母细胞白血病(acute B lymphoblastic leukemia,B⁃ALL)儿童危险度分层及对
早期化疗反应的预测价值。方法:收集B⁃ALL患儿84例,根据WHO危险程度分级将患儿分为低危5例,中危61例,高危18例。
79例患儿接受了化疗治疗,并于化疗前及诱导化疗后(化疗第36天)行腰椎IDEAL⁃IQ及IVIM扫描。根据化疗33 d骨髓微小
残留病(minimal residual disease,MRD)将患儿分为临床缓解(clinical remission,CR)组(54例)和非临床缓解(non⁃clinical remission,
N⁃CR)组(25例)。同时收集患儿年龄、性别、危险度分层、外周血白细胞计数(white blood cell count,WBC)、骨髓原幼淋巴细胞
百分比、乳酸脱氢酶(lactate dehydrogenase,LDH)、是否合并中枢神经系统白血病(central nervous system leukemia,CNSL)等临
床资料。结果:定量参数评价B⁃ALL患儿危险度分层方面,高危组患儿腰椎椎体f值明显高于中低危组(P < 0.001);将外周血
WBC及腰椎椎体f值作为自变量,临床危险度作为应变量进行Logistic回归分析,结果显示f值是评价高危B⁃ALL患儿的独立因素
(ORf=48 082.101,P < 0.001)。在评价早期化疗反应方面,与N⁃CR组相比,CR组患儿化疗后腰椎椎体质子密度脂肪分数(proton
density fat fraction,PDFF)及有效横向弛豫率(effective transverse relaxivity rate,R2 )显著增高(P=0.005、P=0.008)。化疗前危险
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度分层、化疗前纯扩散系数(pure diffusion coefficient,D)及伪扩散系数(pseudo diffusion coefficient,D )值在CR与N⁃CR组间差异均
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有统计学意义(P < 0.001、P=0.024、P=0.030)。化疗后PDFF、化疗前D值及化疗前D 值是N⁃CR的独立危险因素,化疗前D+D *
值预测N⁃CR的价值,曲线下面积(area under the curve,AUC)0.817,略高于化疗后PDFF(AUC=0.807)。结论:腰椎椎体f值可用
于预测B⁃ALL患儿的临床危险度分层,化疗前D+D 值对B⁃ALL患儿早期化疗反应具有显著预测价值。
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[关键词] 腰椎;IDEAL⁃IQ;IVIM;急性淋巴细胞白血病;早期化疗反应;危险度分层
[中图分类号] R445.2 [文献标志码] A [文章编号] 1007⁃4368(2026)03⁃324⁃09
doi:10.7655/NYDXBNSN250828
A preliminary study on the evaluation of risk stratification and prediction of early chemotherapy
response in children with B⁃ALL using quantitative parameters of IDEAL⁃IQ and IVIM
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YANG Jie ,SUN Huimiao ,YANG Hong ,SUN Mengyuan ,CHENG Yanli ,WANG Sijie 3*
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Magnetic Resonance Room,Department of Hematology,Shanxi Children’s Hospital(Shanxi Maternal and Child
Health Hospital),Shanxi 030013,China
[Abstract] Objective:To explore the value of axial iterative decomposition of water and fat with echo asymmetrical and least ⁃
squares estimation quantitation sequence(IDEAL⁃IQ)combined with intravoxel incoherent motion(IVIM)quantitative parameters in
assessing the risk stratification of acute B lymphoblastic leukemia(B ⁃ ALL)children and predicting their early response to
chemotherapy. Methods:A total of 84 children with B⁃ALL were enrolled. According to the WHO risk classification,the children were
divided into the low⁃risk group(n=5),the medium⁃risk group(n=61),and the high⁃risk group(n=18). Among them,79 children
underwent chemotherapy and received lumbar IDEAL ⁃ IQ and IVIM scans before chemotherapy and on day 36 of induction
[基金项目] 山西省高等学校科技创新项目(2022L200);山西省儿童医院(山西省妇幼保健院)科研项目(2023018)
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通信作者(Corresponding author),E⁃mail:wsjwsj118@163.com(ORCID:0000⁃0003⁃2522⁃6607);yjyj118118@163.com(ORCID:0000⁃
0003⁃2522⁃6607)

