Imaging the Parasinus Region with a Third-Generation Dual-Source CT and the Effect of Tin Filtration on Image Quality and Radiation Dose

Lell, Michael; May, Matthias; Brand, Michael; Eller, Achim; Buder, Thomas; Hofmann, Elisabeth; Uder, Michael; Wuest, Wolfgang

doi:10.3174/ajnr.a4270

Cited by 49 publications

(75 citation statements)

References 26 publications

(25 reference statements)

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“…Current research into the use of new generation DSCT has revealed this modality as a promising method to reduce patient dose in traumatic facial bone imaging . DSCT systems operate with two independent x‐ray sources that provide continuous, non‐overlapped anatomical coverage (Fig.…”

Section: Discussionmentioning

confidence: 99%

“…Dose optimisation is attributed to the increase in pitch and slices acquired per rotation, in addition to the ability to use different exposure and technique factors for each x‐ray source. Dual‐energy CT (DECT) is noted in the literature as the most effective protocol for DSCT to reduce dose while obtaining the most information . DECT acquires data using two different energy levels and utilises the attenuation differences to extrapolate more information and apply artefact suppression .…”

Section: Discussionmentioning

confidence: 99%

“…Studies on early DSCT generations demonstrated a lesser radiation dose than MDCT, with equivalent or lesser image quality . The 3rd generation of DSCT was produced with no z ‐axis filter and novel IR technology, which promoted a statistically significant reduction in ED compared to earlier generations . Studies by Meyer et al and Lell et al reported that the latest generation of DSCT technology was capable of producing high resolution CT images in temporal bone scans with a smaller x‐ray current, facilitating a reduction in the ED by at least half, as shown in Figure .…”

Section: Discussionmentioning

confidence: 99%

“…The 3rd generation of DSCT was produced with no z ‐axis filter and novel IR technology, which promoted a statistically significant reduction in ED compared to earlier generations . Studies by Meyer et al and Lell et al reported that the latest generation of DSCT technology was capable of producing high resolution CT images in temporal bone scans with a smaller x‐ray current, facilitating a reduction in the ED by at least half, as shown in Figure . Further investigation in to the use of DSCT systems is necessary to establish the efficacy of this technology in assessing the entire facial structure following traumatic injury.…”

Section: Discussionmentioning

confidence: 99%

See 3 more Smart Citations

Dose reduction in CT imaging for facial bone trauma in adults: A narrative literature review

Hooper

Eccles

Milliken

et al. 2019

J of Medical Radiation Sci

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Trauma to the facial area accounts for a significant number of admissions to the emergency department. Diagnostic imaging is almost always required, and is critical in determining patient management. Multi‐detector computed tomography (MDCT) appears consistently in the literature as the gold‐standard imaging modality for facial bones, but results in a high radiation dose to the patient. This makes the application and advancement of dose reduction and dose optimisation methods vital. This narrative review presents a critical analysis of the literature concerning diagnostic imaging of facial bone trauma, with an emphasis on dose reduction methods for MDCT. Databases including Pubmed, Medline, Web of Science and Scopus were used to investigate this topic, with the key words: facial bone trauma, computed tomography (CT) imaging and dose reduction. Exclusion criteria included studies on nasal bone fracturing, dental imaging, elective surgeries and paediatric imaging. The literature shows overwhelming support for MDCT, given its accuracy, efficiency and ease of operation. Noise reducing reconstruction algorithms show promise as a successful method of dose reduction in facial bone imaging. Investigations of more innovative techniques also appear within the literature, including diagnostic cone‐beam CT (CBCT), intraoperative CBCT and dual‐source CT (DSCT), but further research is required to confirm their clinical value.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

See 2 more Smart Citations

Dose reduction in CT imaging for facial bone trauma in adults: A narrative literature review

Hooper

Eccles

Milliken

et al. 2019

J of Medical Radiation Sci

View full text Add to dashboard Cite

show abstract

“…6) In addition to offering improved spectral separation when using 80- and 140-kVp X-ray spectra,[62] additional tin filtration could also provide good spectral separation with improved image quality when using 100 kVp rather than 80 kVp for the low-kVp source of a dual-source DECT scanner. [63] This option mitigates the possibility of insufficient X-ray penetration of the low-kVp radiation through large patients, and may offer lower image noise with adequate spectral separation in many DECT applications; however, this solution also reduces the separation between the low- and high-kVp spectra[64]. …”

Section: Ct Technologymentioning

confidence: 99%

Opportunities for new CT contrast agents to maximize the diagnostic potential of emerging spectral CT technologies

Yeh

Fitzgerald

Edic

et al. 2017

Advanced Drug Delivery Reviews

146

140

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The introduction of spectral CT imaging in the form of fast clinical dual-energy CT enabled contrast material to be differentiated from other radiodense materials, improved lesion detection in contrast-enhanced scans, and changed the way that existing iodine and barium contrast materials are used in clinical practice. More profoundly, spectral CT can differentiate between individual contrast materials that have different reporter elements such that high-resolution CT imaging of multiple contrast agents can be obtained in a single pass of the CT scanner. These spectral CT capabilities would be even more impactful with the development of contrast materials designed to complement the existing clinical iodine- and barium-based agents. New biocompatible high-atomic number contrast materials with different biodistribution and X-ray attenuation properties than existing agents will expand the diagnostic power of spectral CT imaging without penalties in radiation dose or scan time.

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Feasibility of bronchial wall quantification in low‐ and ultralow‐dose third‐generation dual‐source CT: An ex vivo lung study

Zhang

Pelgrim

Yan

et al. 2020

J Applied Clin Med Phys

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Purpose To investigate image quality and bronchial wall quantification in low‐ and ultralow‐dose third‐generation dual‐source computed tomography (CT). Methods A lung specimen from a formerly healthy male was scanned using third‐generation dual‐source CT at standard‐dose (51 mAs/120 kV, CTDI vol 3.41 mGy), low‐dose (1/4th and 1/10th of standard dose), and ultralow‐dose setting (1/20th). Low kV (70, 80, 90, and Sn100 kV) scanning was applied in each low/ultralow‐dose setting, combined with adaptive mAs to keep a constant dose. Images were reconstructed at advanced modeled iterative reconstruction (ADMIRE) levels 1, 3, and 5 for each scan. Bronchial wall were semi‐automatically measured from the lobar level to subsegmental level. Spearman correlation analysis was performed between bronchial wall quantification (wall thickness and wall area percentage) and protocol settings (dose, kV, and ADMIRE). ANOVA with a post hoc pairwise test was used to compare signal‐to‐noise ratio (SNR), noise and bronchial wall quantification values among standard‐ and low/ultralow‐dose settings, and among ADMIRE levels. Results Bronchial wall quantification had no correlation with dose level, kV, or ADMIRE level (|correlation coefficients| < 0.3). SNR and noise showed no statistically significant differences at different kV in the same ADMIRE level (1, 3, or 5) and in the same dose group ( P > 0.05). Generally, there were no significant differences in bronchial wall quantification among the standard‐ and low/ultralow‐dose settings, and among different ADMIRE levels ( P > 0.05). Conclusion The combined use of low/ultralow‐dose scanning and ADMIRE does not influence bronchial wall quantification compared to standard‐dose CT. This specimen study suggests the potential that an ultralow‐dose scan can be used for bronchial wall quantification.

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Imaging the Parasinus Region with a Third-Generation Dual-Source CT and the Effect of Tin Filtration on Image Quality and Radiation Dose

Abstract: BACKGROUND AND PURPOSE:CT is the imaging technique of choice in the evaluation of midface trauma or inflammatory disease. We performed a systematic evaluation of scan protocols to optimize image quality and radiation exposure on third-generation dual-source CT.

Cited by 49 publications

References 26 publications

Dose reduction in CT imaging for facial bone trauma in adults: A narrative literature review

Dose reduction in CT imaging for facial bone trauma in adults: A narrative literature review

Opportunities for new CT contrast agents to maximize the diagnostic potential of emerging spectral CT technologies

Feasibility of bronchial wall quantification in low‐ and ultralow‐dose third‐generation dual‐source CT: An ex vivo lung study

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