Imaging of XXXX using spectral CT in a @entity235 model.

@entity235 @entity1496 @entity5327
OBJECTIVE: To explore the diagnostic value of single-source dual-energy spectral CT (sDECT) imaging in an @entity5327 (SMAE) @entity235 model. METHODS: Pre-contrast and double-phase contrast-enhanced sDECT were performed before and after embolization in eight SMAE @entity235 models. Monochromatic images of embolized intestine with the best contrast-to-noise ratio (CNR) were obtained and compared with the polychromatic images. CT parameters including attenuation value, @entity1496 content, water content and thickness of the embolized intestinal segments were obtained, and normalized difference in @entity1496 concentration (NDIC) was calculated. RESULTS: The CNR in pre-contrast, arterial phase and portal venous phase at 4   h after embolization was 1.11        1.23, 13.50        1.54 and 10.63        3.75, respectively, significantly higher than those of the polychromatic images (p   <   0.05). The @entity1496 -based images clearly revealed the embolized intestinal segments, which were highly consistent with the gross findings. The difference in attenuation values between the embolization area and non-embolization area in the monochromatic images was 105.06        35.35   HU, higher than that in the polychromatic images (p   <   0.001). The attenuation values and NDIC were significantly decreased at 2   h after embolization, relatively increased at 4   h and gradually decreased at 6 and 8   h. The changing pattern of thickness was similar to that of NDIC over time after embolization. CONCLUSION: sDECT can provide the optimal monochromatic images and allow increased detection rates of lesions. sDECT is a very promising tool for quantitative diagnosis of SMAE. ADVANCES IN KNOWLEDGE: Our research provides more quantitative parameters for the assessment of SMAE by sDECT.
