Back to Search
Start Over
Advanced Virtual Monoenergetic Imaging: Improvement of Visualization and Differentiation of Intramuscular Lesions in Portal-Venous-phase Contrast-enhanced Dual-energy CT
Advanced Virtual Monoenergetic Imaging: Improvement of Visualization and Differentiation of Intramuscular Lesions in Portal-Venous-phase Contrast-enhanced Dual-energy CT
- Source :
- Academic Radiology. 26:1457-1465
- Publication Year :
- 2019
- Publisher :
- Elsevier BV, 2019.
-
Abstract
- Purpose To evaluate the effect of advanced monoenergetic imaging (MEI+) postprocessing algorithm on the visualization of various intramuscular lesions on portal-venous-phase contrast-enhanced dual-energy computed tomography (DECT). Material and Methods Thirty-nine patients (64.3 ± 11.1 years; 26 males) with various intramuscular lesions ranging from malignancy, bleeding, inflammation, edematous changes, and benign neoplasms were included and underwent DECT (100/Sn150kV). Postprocessing with MEI+ technique was used to reconstruct images at four different keV levels (40, 60, 80, 100) and compared to the standard portal-venous-phase CT (CTpv) images. Image quality was assessed qualitatively (conspicuity, delineation, sharpness, noise, and confidence) by two independent readers using 5-point Likert scales, 5 = excellent; as well as quantitatively by calculating signal-to-noise ratios (SNR), contrast-to-noise ratios (CNR), and area under the receiver operating characteristic (ROC) curve (AUC) for lesion characterization. Results Highest lesion enhancement and diagnostic confidence were observed in MEI+ 40 keV, with significant differences to CTpv (p Conclusion MEI+ at low keV levels can significantly improve lesion detection of benign versus malignant intramuscular entities in patients undergoing portal-venous-phase DECT scans due to increased CNR.
- Subjects :
- Male
Image quality
media_common.quotation_subject
Contrast Media
Malignancy
Portal venous phase
030218 nuclear medicine & medical imaging
Radiography, Dual-Energy Scanned Projection
Lesion
03 medical and health sciences
0302 clinical medicine
Humans
Medicine
Contrast (vision)
Radiology, Nuclear Medicine and imaging
Muscle, Skeletal
Retrospective Studies
media_common
Muscle Neoplasms
Receiver operating characteristic
Portal Vein
business.industry
Virtual Reality
Virtual monoenergetic imaging
Middle Aged
medicine.disease
ROC Curve
030220 oncology & carcinogenesis
Female
Dual energy ct
medicine.symptom
Tomography, X-Ray Computed
business
Nuclear medicine
Algorithms
Subjects
Details
- ISSN :
- 10766332
- Volume :
- 26
- Database :
- OpenAIRE
- Journal :
- Academic Radiology
- Accession number :
- edsair.doi.dedup.....daa8dd29acaddd9a01140f09fd31fe97
- Full Text :
- https://doi.org/10.1016/j.acra.2019.02.014