Application of Spectral CT Vascular Optimization Technique on Image Quality in Laparoscopic Right Hemicolectomy
10.3969/j.issn.1005-5185.2025.08.015
- VernacularTitle:光谱CT血管优化技术在腹腔镜右半结肠切除术中的应用
- Author:
Tao YU
1
;
Zhicheng CHEN
;
Shiqi GUO
;
Yu SHI
Author Information
1. 中国医科大学附属盛京医院放射科,辽宁 沈阳 110004
- Publication Type:Journal Article
- Keywords:
Tomography,X-ray computed;
Laparoscopes;
Colectomy;
Spectral CT;
Virtual monoenergetic image
- From:
Chinese Journal of Medical Imaging
2025;33(8):885-891
- CountryChina
- Language:Chinese
-
Abstract:
Purpose To explore the application value of spectral CT vascular optimization technique for laparoscopic right hemicolectomy.Materials and Methods Ninety patients who underwent contrast-enhanced CT with spectral CT before scheduled laparoscopic right hemicolectomy from March to November 2022 in Shengjing Hospital of China Medical University were retrospectively analyzed.The raw images were reconstructed to obtain 120 kVp conventional images and spectral-based virtual monochromatic images(VMIs)at 40,50,60,70 keV.The CT value and image noise of gastrocolic trunk of Henle(GTH),right colic vein(RCV)and ileocolic vein(ICV)were measured.The CT value,image noise,signal noise ratio and contrast noise ratio of VMIs and conventional image were analyzed.The image quality and venous anatomical information of each group were evaluated subjectively with three-dimensional reconstruction technique.Results The CT value[(405.55±103.06)Hu,(406.61±103.42)Hu,402.35(337.95,477.45)Hu],image noise[19.90(12.10,34.55)Hu,21.10(10.95,44.30)Hu,19.70(11.25,44.80)Hu],signal noise ratio[19.46(10.60,36.31),20.16(8.73,37.42),18.49(9.99,36.24)]and contrast noise ratio[53.36(35.92,70.79),52.34(33.73,81.03),56.23(34.69,79.97)]of GTH,RCV,ICV of VMIs at 40 keV were significantly higher than those of conventional image and other VMIs(F/H=268.53,23.17,33.09,198.77,272.51,28.93,25.48,189.62,318.24,29.42,20.13,212.46,all P<0.001).Subjective scores showed that the image quality and vascular visualization of GTH,RCV and ICV at 40 keV were the best.Conclusion Spectral CT can improve the imaging quality and vascular visualization of GTH,RCV and ICV.VMIs at 40 keV has the optimal performance.
