Virtual non-contrast computer tomography (CT) with spectral CT as an alternative to conventional unenhanced CT in the assessment of gastric cancer.
作者： Shi-Feng Tian , Ai-Lian Liu , He-Qing Wang , Jing-Hong Liu , Mei-Yu Sun
DOI: 10.7314/APJCP.2015.16.6.2521
关键词:
摘要: Objective: The purpose of this study was to evaluate computed tomography (CT) virtual non-contrast (VNC) spectral imaging for gastric carcinoma. Materials and Methods: Fifty-two patients with histologically proven carcinomas underwent gemstone (GSI) including contrast-enhanced hepatic arterial, portal venous, equilibrium phase acquisitions prior surgery. VNC arterial (VNCa), venous (VNCv), (VNCe) images were obtained by subtracting iodine from iodine/water images. Images analyzed respect image quality, carcinoma-intragastric water contrast-to-noise ratio (CNR), carcinoma-perigastric fat CNR, serosal invasion, enlarged lymph nodes around the lesions. Results: Carcinoma-water CNR values significantly higher in VNCa, VNCv, VNCe than normal CT (2.72, 2.60, 2.61, respectively, vs 2.35, p≤0.008). Carcinomaperigastric lower (7.63, 7.49, 7.32, 8.48, p< 0.001). There no significant differences carcinoma-water among difference determination invasion or between VNCa Conclusions: may be a surrogate conventional carcinoma evaluation.
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