Imaging Pearls ❯ Dual Energy ❯ Liver
|
-- OR -- |
|
- “ For the assessment of possible GIST hepatic metastases, the reconstruction of virtual MEIs at 70 keV is not superior Iqob of reconstructed PEIs at 120 kVp. Yet, if reader experience is taken into consideration, our data suggest than inexperienced readers might improve their diagnostic confidence by replacing the 120 kVp PEI by the 70 MEI, as Iqsub of the 70-keV MEI was rated significantly higher.”
Objective and Subjective Image Quality of Liver Parenchyma and Hepatic Metastases with Virtual Monoenergetic Dual-source Dual-energy CT Reconstructions: An Analysis in Patients with Gastrointestinal Stromal Tumor
Sudarski S et al.
Acad Radiol 2014;21:514-522
- “ Studies have shown significant improvement in detection of hepatocellular carcinoma (HCC) and greater lesion conspicuity with the use of an enhanced late arterial phase 80-kVp dataset in comparison with standard 120-kVp images. Apparently, the associated increase in
noise and decrease in image quality do not
significantly impair detection of small lesions.
In another study, however, the use
of an 80-kV dataset was not associated with
improvement in HCC detection despite a significantly better CNR.“
Dual-Energy CT: Oncologic Applications
De Cecco CN et al.
AJR 2012;199:S98-S105 - “DECT is an innovative imaging technique
that can have a considerable effect on the care of oncologic patients. The possibility of obtaining different material-specific datasets in the same acquisition can improve lesion detection and characterization. This approach can also aid in evaluation of response to therapy and detection of oncology-related disorders.”
Dual-Energy CT: Oncologic Applications
De Cecco CN et al.
AJR 2012;199:S98-S105
- “ Dual source dual energy CT is accurate for diagnosing clinically important hepatic iron accumulation without confounding influence of hepatic steatosis, with diagnostic performance on par with MRI.”
Feasibility and Accuracy of Dual Source Dual Energy CT for Noninvasive Determination of Hepatic Iron Formation
Joe E et al.
Radiology 2012; 262:126-135 - “ Dual source dual energy CT (DSDE CT) can be used for diagnosing clinically important hepatic iron accumulation, demonstrating sensitivity of 80% and specificity of 90% when the optimal cutoff value for attenuation difference between 80 and 140 kVp at CT is set at 12.5.”
Feasibility and Accuracy of Dual Source Dual Energy CT for Noninvasive Determination of Hepatic Iron Formation
Joe E et al.
Radiology 2012; 262:126-135 - “ If CT is indicated, DSDE CT can be used as an accurate modality for diagnosisng clinically important (≥10% at histopathologic examination) hepatic iron accumulation without the confounding influence of hepatic steatosis, with diagnostic performance on par with MR imaging.”
Feasibility and Accuracy of Dual Source Dual Energy CT for Noninvasive Determination of Hepatic Iron Formation
Joe E et al.
Radiology 2012; 262:126-135