Spinal dual-energy computed tomography: improved visualisation of spinal tumorous growth with a noise-optimised advanced monoenergetic post-processing algorithm

Kraus, M.; Weiß, Jakob; Selo, Nadja; Flohr, Thomas; Notohamiprodjo, Mike; Bamberg, Fabian; Nikolaou, Konstantin; Othman, Ahmed E.

doi:10.1007/s00234-016-1733-7

Cited by 12 publications

(2 citation statements)

References 34 publications

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“…100 High-keV VMI reconstructions can also help reduce beam-hardening artefacts arising from deep brain stimulating electrodes. 101 Finally, a prior study demonstrated that dose reduction techniques can also be applied to DECT of the brain without a decrease in diagnostic performance for the detection of intracranial haemorrhage, 102 establishing DECT as dose-neutral for imaging of the brain.…”

Section: Bjr D'angelo Et Almentioning

confidence: 99%

Dual energy computed tomography virtual monoenergetic imaging: technique and clinical applications

D’Angelo

Cicero

Mazziotti

et al. 2019

BJR

Self Cite

101

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Dual energy CT (DECT) has evolved into a commonly applied imaging technique in clinical routine due to its unique post-processing opportunities for improved evaluation of all body areas. Reconstruction of virtual monoenergetic imaging (VMI) series has shown beneficial effects for both non-contrast and contrast-enhanced DECT due to the flexibility to calculate low-keV VMI reconstructions to increase contrast and iodine attenuation, or to compute high-keV VMI reconstructions to reduce beam-hardening artefacts. The goal of this review article is to explain the technical background of VMI and noise-optimized VMI+ algorithms and to give an overview of useful clinical applications of the VMI technique in DECT of various body regions.

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Section: Bjr D'angelo Et Almentioning

confidence: 99%

Dual energy computed tomography virtual monoenergetic imaging: technique and clinical applications

D’Angelo

Cicero

Mazziotti

et al. 2019

BJR

Self Cite

101

View full text Add to dashboard Cite

show abstract

“…In all studies, the optimal energy levels for VMI+ reconstructions recommended by researchers for different tumors were typically in the range of 50-60 keV. The optimal energy levels of reconstruction recommended for various cancers/tumors are as follows: 50 keV for cutaneous malignant melanomas and renal cell carcinomas (RCCs) in the corticomedullary-phase of enhancement (19,20); 55 keV for head and neck cancers, lung cancers, and hypervascular liver tumors (21-23); 60 keV for RCCs in the nephrogenic-phase of enhancement, gastrointestinal stromal tumors, and abdominal metastases, and hypo-attenuating liver metastases from colorectal cancers (19,24,25); low energy levels especially 40 and 50 keV for pancreatic adenocarcinomas (26); and 40 keV (a small number of studies) for malignant tumors in the head and neck region, metastatic spinal tumors, and early gastric cancer (27)(28)(29)(30). Concerning head and neck malignancies, Albrecht et al found that 55 keV reconstructions could yield the best subjective image quality (21); however, May et al recommended 40 keV for optimal image quality (28).…”

Section: Tumormentioning

confidence: 99%

Noise-optimized virtual monoenergetic imaging technology of the third-generation dual-source computed tomography and its clinical applications

Zeng¹,

Geng²,

Zhang³

2021

Quant Imaging Med Surg

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The third-generation dual-source computed tomography (DSCT) is among the most advanced imaging methods. It employs noise-optimized virtual monoenergetic imaging (VMI+) technology. It uses the frequency-split method to extract high-contrast image information from low-energy images and low-noise information from images reconstructed at an optimal energy level, combining them to obtain the final image with improved quality. This review is the first to summarize the results of clinical studies that primarily and recently evaluated the VMI+ technique based on tumor, blood vessel, and other lesion classification. We aim to assist radiologists in quickly selecting the appropriate energy level when performing image reconstruction for superior image quality in clinical work and providing several ideas for future scientific research of the VMI+ technique. Presently, VMI+ reconstruction is mostly used for images of various tumors or blood vessels, including coronary plaques, coronary stents, deep vein thromboses, pulmonary embolisms (PEs), active arterial hemorrhages, and endoleaks after endovascular aneurysm repair. In addition, VMI+ has been used for imaging children's heads, liver lesions, pancreatic lacerations, and reducing metal artifacts. Regarding the reconstruction at the optimal energy level, the VMI+ technique yielded a higher image quality than the pre-optimized virtual monoenergetic imaging (VMI) technique and single-energy CT. Moreover, either low concentrations of contrast medium or low iodine injection rates can be applied before VMI+ reconstruction at a low-energy level to reduce contrast agent-related kidney injury risk. After reconstructing an image at the optimal energy level, both the image's window width and level can also be adjusted to improve the image effect's reach and diagnosis suitability. To improve image quality and lesion-imaging clarity and reduce the use of contrast agents, VMI+ reconstruction technology has been applied clinically, in which the selection of energy level is the key to the whole reconstruction process. Our review summarizes these optimal levels for radiologists' reference and suggests new ideas for the direction of future VMI+ research.

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Dual energy CT in musculoskeletal applications beyond crystal imaging: bone marrow maps and metal artifact reduction

2022

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Spinal dual-energy computed tomography: improved visualisation of spinal tumorous growth with a noise-optimised advanced monoenergetic post-processing algorithm

Abstract: MEI+ at low keV levels can significantly improve image quality and delineation of spinal growth in patients with portal-venous phase CT scans due to increased CNR and limited image noise.

Cited by 12 publications

References 34 publications

Dual energy computed tomography virtual monoenergetic imaging: technique and clinical applications

Dual energy computed tomography virtual monoenergetic imaging: technique and clinical applications

Noise-optimized virtual monoenergetic imaging technology of the third-generation dual-source computed tomography and its clinical applications

Dual energy CT in musculoskeletal applications beyond crystal imaging: bone marrow maps and metal artifact reduction

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