临床小儿外科杂志2024，Vol.23Issue(4)：387-392,6.DOI:10.3760/cma.j.cn101785-202303069-016
能谱CT虚拟平扫与真实平扫诊断儿童骨骼肌肿瘤或肿瘤样病变的对比研究
Comparative study of spectral CT virtual plain scan versus actual plain scan in diagnosing pediatric skeletal muscle tumors/tumor-like lesions
李君伟 1庄霞梅 1尹燕 1王海 1魏伟安 1金科1
作者信息
- 1. 中南大学湘雅医学院附属儿童医院 湖南省儿童医院放射科,长沙 410007
- 折叠
摘要
Abstract
Objective To compare the imaging characteristics and qualities of spectral computed tomo-graphy(CT)virtual non-contrast(VNC)versus true non-contrast(TNC)scans for pediatric skeletal muscle tumors/tumor-like lesions and explore the accuracy and feasibility of using spectral CT VNC for diagnosing these conditions.Methods A retrospective analysis was conducted for the radiological data of 43 children with skeletal muscle tumors/tumor-like lesions receiving spectral CT plain and dual-phase enhancement scans.Then the raw data were processed into VNCa and VNCv.Also the corresponding normal skeletal muscle and fat on TNC,VNCa and VNCv images were measured.Signal noise ratio(SNR)and contrast noise ratio(CNR)were calculated for comparing the image quality and diagnostic efficacy of three types of images.Results No statis-tically significant difference existed in CT values of skeletal muscle and skeletal muscle lesions among three types of images(skeletal muscle:F=0.663,P=0.517;skeletal muscle lesions:F=2.139,P=0.122).SNR value of VNCv was significantly higher than that of TNC(P＜0.01).No statistically significant difference exis-ted in CT signs of skeletal muscle tumors/tumor-like lesions between TNC and VNC images(P＞0.05).The subjective scoring consistency of three types of images by two observers was excellent(TNC:κ=0.554;VNCa:κ=0.501;VNCv:κ=0.628).The consistency of CT values of normal skeletal muscle between VNCa,VNCv and TNC images was excellent(average difference:VNCa=1.330 HU,VNCv=0.518 HU).And the consis-tency of CT values of skeletal muscle lesions between VNCv and TNC images was also decent(average differ-ence=-3.870 HU).Conclusions Spectral CT VNC technology has demonstrated similar image quality and diagnostic value to TNC in diagnosing pediatric skeletal muscle tumors/tumor-like lesions.It may minimize the number of routine plain scans and lower radiation dosage.关键词
肌,骨骼/肌肿瘤/肿瘤/肿瘤样病变/体层摄影技术,X线计算机/虚拟平扫/儿童Key words
Muscle,Skeletal/Muscle Neoplasms/Tumors/Tumor-Like Lesions/Tomography,X-ray computed/Virtual Non-contrast/Child引用本文复制引用
李君伟,庄霞梅,尹燕,王海,魏伟安,金科..能谱CT虚拟平扫与真实平扫诊断儿童骨骼肌肿瘤或肿瘤样病变的对比研究[J].临床小儿外科杂志,2024,23(4):387-392,6.
