Pulmonary Embolism Versus Mimics on Dual-energy Spectral Computed Tomography: An Algorithmic Approach

Kikano, Elias; Laukamp, Kai Roman; Azeze, S.; Smith, Daniel A.; Rahnemai-Azar, Amir-Ata; Gupta, Ashish; Gupta, Amit

doi:10.1097/rct.0000000000001093

Cited by 1 publication

(1 citation statement)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The DECT modality displays the accumulation of a contrast agent measured in conventional CT in HU units as its concentration in 1 cm 3 of tissue, which is a unique solution. In pulmonary diagnostics it is used to assess malignancy of lung tumors 26,27 or to differentiate the subtypes of malignant tumors 28 , assess lung vessels [29][30][31] and lung tissue pathologies 32,33 .…”

Section: Discussionmentioning

confidence: 99%

Dual-energy computed tomography as a lower radiation dose alternative to perfusion computed tomography in tumor viability assessment

Żegadło

Różyk

Żabicka

et al. 2023

Sci Rep

View full text Add to dashboard Cite

To present the utility of dual-energy computed tomography (DECT) in the assessment of angiogenesis of focal lesions as an example of a solitary pulmonary nodule (SPN). This prospective study comprised 28 patients with SPN who underwent DECT and perfusion computed tomography (CTP), according to a proprietary protocol. Two radiologists independently analyzed four perfusion parameters, namely blood flow (BF), blood volume (BV), the time to maximum of the tissue residue function (Tmax), permeability surface area product (PS) from CTP, in addition to the iodine concentration (IC) and normalized iodine concentration (NIC) of the SPN from DECT. We used the Pearson R correlation and interclass correlation coefficients (ICCs). Statistical significance was assumed at p < 0.05. The mean tumor size was 23.5 ± 6.5 mm. We observed good correlations between IC and BF (r = 0.78, p < 0.000) and NIC and BF (r = 0.71, p < 0.000) as well as between IC and BV (r = 0.73, p < 0.000) and NIC and BV (r = 0.73, p < 0.000) and poor correlation between IC and PS (r = 0.38, p = 0.044).There was no correlation between NIC and PS (r = 0.35, p = 0.064), IC content and Tmax (r = − 0.28, p = 0.147) and NIC and Tmax (r = − 0.21, p = 0.266). Inter-reader agreement on quantitative parameters at CTP (ICCPS = 0.97, ICCTmax = 0.96, ICCBV = 0.98, and ICCBF = 0.99) and DECT (ICCIC = 0.98) were excellent. The radiation dose was significantly lower in DECT than that in CTP (4.84 mSv vs. 9.07 mSv, respectively). DECT is useful for the functional assessment of oncological lesions with less exposure to radiation compared to perfusion computed tomography.

show abstract