The pilot study of dual-energy CT gemstone spectral imaging on the image quality of hand tendons

Deng, Kai; Li, Wei; Wang, Junjun; Wang, Guangli; Shi, Hao; Zhang, Chengqi

doi:10.1016/j.clinimag.2013.01.008

Cited by 12 publications

(5 citation statements)

References 19 publications

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“…It has been demonstrated that 65-keV monochromatic GSI images could increase the image quality and ability to display minor tendon lesions compared to conventional polychromatic CT images in hand tendons [3]. In our study, image analysis was done in workstations where the keV level of monochromatic GSI images could be freely adjusted from 40 to 140 keV.…”

Section: Discussionmentioning

confidence: 99%

“…However, we did include the popliteus tendon along with the cruciate ligaments in the evaluation of optimal keV levels and reviewing protocols as a reference. Tendon visualization in DECT GSI images and material-specific color maps has been investigated in previous studies [3,4].…”

Section: Discussionmentioning

confidence: 99%

“…These advantages include a higher soft tissue resolution in monochromatic gemstone spectral imaging (GSI) images compared to conventional polychromatic MDCT images and the ability to create material-specific color mapping and dual-energy bone removal [3,4]. However, there are only a few previously published studies on the utilization of DECT in the evaluation of soft tissue injuries of the knee [5][6][7].…”

Section: Introductionmentioning

confidence: 98%

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Dual-energy computed tomography of cruciate ligament injuries in acute knee trauma

Peltola

Koskinen

2015

Skeletal Radiol

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 98%

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Dual-energy computed tomography of cruciate ligament injuries in acute knee trauma

Peltola

Koskinen

2015

Skeletal Radiol

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“…Studies have shown that the spectral curve changes when X-rays pass through tissues with different chemical compositions, so this curve can be used to differentiate tissues [15], [16]. Previous studies have suggested that conventional chest CT and perfusion CT can also differentiate malignant and tuberculosis groups like spectral CT but fail to differentiate malignant nodules and inflammatory lesions.…”

Section: Discussionmentioning

confidence: 99%

Value of Dual-Energy Computed Tomography in the Assessment of Primary Lung Cancer

Do,

Nguyen,

Doan

et al. 2023

vjrnm

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Objective: This study aims to observe the value of the dual-energy computed tomography (DECT) technique in the assessment of primary lung cancer. Compare the difference in density of lung tumors on the true non-contrast (TNC) and virtual non-contrast (VNC) images. Investigate the iodine concentration value of lung tumors in differentiating malignant and benign lesions as well as adenocarcinoma and squamous carcinoma in lung cancer. Methods: We conducted a cross-sectional descriptive study in 42 patients with solitary pulmonary nodules proved by pathology underwent doublephase enhanced CT scan at the Diagnostic Imaging Center of K Hospital, Hanoi. Process dual-energy CT data into virtual monoenergetic and virtual non-contrast images, comparing with true non-contrast images. Compare the iodine concentration of malignant and benign lesions, adenocarcinoma, and squamous cell carcinoma lung cancer. The slope rate was calculated from the spectral curve. Patients were divided into an inflammatory group, a malignant group, and a tuberculosis group. The Kruskal–Wallis test and Nemenyi test were performed to compare quantitative parameters among the three groups. Results: The study comprised 42 patients (34 males). The mean age of patients was 56 ±11. 23/42 right lung tumors (accounted for about 55%), 13/33 left lung tumors (about 40%). Pathological results showed that 73.8% (31/42) of the lesions were malignant, and 26.2% were benign. The density of lung tumors on the true non-contrast (TNC) and virtual noncontrast (VNC) images is 43,81 ± 10,90 and 43,32 ± 11,15 HU (p=0,147). The contrast-noise ratio of lung tumors has the highest value in the virtual monochrome image at 65 keV. The iodine concentration of malignant tumors was 0,37±0,15mg/ml, higher than benign lesions. The normalized iodine concentration (nIC) of lung tumors can differentiate malignant from benign lesions with an area under the curve of 0,748, with a best cut-off point of 0,27 mg/ml having a sensitivity is 74,2%, specificity of 81,8%. The normalized iodine concentration (nIC) of lung tumors can also differentiate adenocarcinoma from squamous cell carcinoma with an area under the curve of 0,835, with a best cut-off point of 0,36 mg/ml having a sensitivity is 76,5%, specificity of 100%. The mean slope rate for the inflammatory group was 2,51 ± 0,25, significantly higher than these parameters for the malignant group (p < 0.05), and the parameters for the malignant group were significantly higher than the tuberculosis group (p < 0.05). Conclusion: Virtual non-contrast images can replace the role of true non-contrast images. In virtual monoenergetic, the 65 keV sequence has the best Contrast to Noise Ratio (CNR). Quantitative analysis of iodine concentration in lung tumors can help differentiate malignant and benign lung lesions, adenocarcinoma, and squamous cell carcinoma. HU slope rate showed statistically significant differences, which is helpful in the differential diagnosis among inflammatory, malignant, and tuberculosis lesions.

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“…Multiple authors showed that tendons can be visualized with DECT in the ankle, 35 wrist, 8,35 hand, 8,59 knee, 1,32 and feet. 59 Although this collagen technique shows promise, it is still in the very early stages of application and has to be investigated further to become clinically relevant. 36 In patients with tibial plateau fractures, 50% have concomitant soft tissue injury, up to 60 to 70% have ligament tears, and 50 to 80% can have meniscal tears.…”

Section: Tip 8: Collagen Analysismentioning

confidence: 99%

Top-Ten Tips for Dual-Energy CT in MSK Radiology

Walstra

Hickle

Duggan

et al. 2019

Semin Musculoskelet Radiol

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Dual-energy computed tomography (DECT) has the potential to detect musculoskeletal pathology with greater sensitivity than conventional CT alone at no additional radiation dose to the patient. It therefore has the potential to reduce the need for further diagnostic imaging or procedures (e.g., joint aspirations in the case of gout or magnetic resonance imaging to confirm undisplaced fractures).DECT is a well-established technique for the detection of gout arthropathy. Multiple newer applications have shown clinical potential including bone marrow edema detection and metal artifact reduction. Collagen analysis, bone marrow lesion detection, and iodine mapping in CT arthrography are areas of possible future application and development.This article outlines 10 tips on the use of DECT imaging of the musculoskeletal system, explaining the technique and indications with practical suggestions to help guide the radiologist.

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The pilot study of dual-energy CT gemstone spectral imaging on the image quality of hand tendons

Cited by 12 publications

References 19 publications

Dual-energy computed tomography of cruciate ligament injuries in acute knee trauma

Dual-energy computed tomography of cruciate ligament injuries in acute knee trauma

Value of Dual-Energy Computed Tomography in the Assessment of Primary Lung Cancer

Top-Ten Tips for Dual-Energy CT in MSK Radiology

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