Li Junwei,Zhuang Xiamei,Yin Yan,et al.Comparative study of spectral CT virtual plain scan versus actual plain scan in diagnosing pediatric skeletal muscle tumors/tumor-like lesions[J].Journal of Clinical Pediatric Surgery,,():387-392.[doi:10.3760/cma.j.cn101785-202403060-016]
Comparative study of spectral CT virtual plain scan versus actual plain scan in diagnosing pediatric skeletal muscle tumors/tumor-like lesions
- Keywords:
- Muscle; Skeletal; Muscle Neoplasms; Tumors/Tumor-Like Lesions; Tomography; X-ray computed; Virtual Non-contrast; Child
- Abstract:
- Objective To compare the imaging characteristics and qualities of spectral computed tomography (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 statistically 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 existed 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 consistency of CT values of skeletal muscle lesions between VNCv and TNC images was also decent (average difference=-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.
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Memo
收稿日期:2023-03-31。
通讯作者:金科,Email:jinke001@sina.com