Retrospective analysis of dose delivered to the uterus during CT examination in pregnant women

Dabli, Djamel; Linard, Mélinée; Durand, Quentin; Frandon, Julien; Oliveira, Fabien de; Beregi, Jean Paul; Greffier, Joël

doi:10.1016/j.diii.2022.03.003

Cited by 5 publications

(1 citation statement)

References 24 publications

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“…Over the last decade, Dual Energy Computed Tomography (DECT) technology has seen a rise in adoption 16 , 17 . Several studies have shown that DECT can accurately quantify iodine concentration 18 – 20 . However, despite the improvements that could be expected from such an accurate measurement, it is not widely used, and there is a scarcity of published data.…”

Section: Introductionmentioning

confidence: 99%

Quantifying iodine concentration in the normal bowel wall using dual-energy CT: influence of patient and contrast characteristics

Nehnahi,

Simon,

Moinet

et al. 2023

Sci Rep

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This study aimed to establish quantitative references of the normal bowel wall iodine concentration (BWIC) using dual energy CT (DECT). This single-center retrospective study included 248 patients with no history of gastrointestinal disease who underwent abdominal contrast-enhanced DECT between January and April 2022. The BWIC was normalized by the iodine concentration of upper abdominal organs (BWICorgan,) and the iodine concentration (IC) of the aorta (BWICaorta). BWIC decreased from the stomach to the rectum (mean 2.16 ± 0.63 vs. 2.19 ± 0.63 vs. 2.1 ± 0.58 vs. 1.67 ± 0.47 vs. 1.31 ± 0.4 vs. 1.18 ± 0.34 vs. 0.94 ± 0.26 mgI/mL for the stomach, duodenum, jejunum, ileum, right colon, left colon and rectum, respectively; P < 0.001). By multivariate analysis, BWIC was associated with a higher BMI (OR:1.01, 95% CI 1.00–1.02, P < 0.001) and with a higher injected contrast dose (OR: 1.51; 95% CI 1.36–1.66, P < 0.001 and 2.06; 95% CI 1.88–2.26, P < 0.001 for 500 mgI/kg and 600 mgI/kg doses taking 400 mgI/kg dose as reference). The BWICorgan was shown independent from patients and contrast-related variables while the BWICaorta was not. BWIC varies according to bowel segments and is dependent on the total iodine dose injected. It shall be normalized with the IC of the upper abdominal organs.

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