Clinical assessment of image quality, usability and patient comfort in dedicated spiral breast computed tomography

Schmidt, Cynthia; Zellweger, Caroline; Wieler, Jann; Berger, Nicole; Marcon, Magda; Frauenfelder, Thomas; Boss, Andreas

doi:10.1016/j.clinimag.2022.07.001

Cited by 9 publications

(5 citation statements)

References 30 publications

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“…In addition, by post-processing the image data, iodine maps could be reconstructed, which allow conclusions to be drawn about contrast media uptake within the mammary gland tissue. In this way, breast carcinomas can be better recognized, assessed, and characterized in terms of their extent, similar to what has already been reported for the Dual-Energy EID CT 14 26 27 . Finally, no compression of the breast is required compared to mammography and, accordingly, a significantly higher level of patient comfort is provided 28 .…”

Section: Oncological Imagingsupporting

confidence: 72%

“…Darüber hinaus könnten durch Nachbearbeitung der Bilddaten Jodkarten rekonstruiert werden, welche Rückschlüsse auf die Kontrastmittelaufnahme innerhalb des Brustdrüsengewebes ermöglichen. Auf diese Weise können Mammakarzinome besser erkannt, hinsichtlich ihrer Ausdehnung beurteilt und charakterisiert werden, ähnlich wie dies bereits für das Dual-Energy EID-CT berichtet wurde [14,26,27]. Schlussendlich ist im Vergleich zur Mammographie keine Kompression der Brust erforderlich und dementsprechend ein deutlich höherer Patientenkomfort gegeben [28].…”

Section: Thorax Und Brustunclassified

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Photon-counting computed tomography – clinical application in oncological, cardiovascular, and pediatric radiology

Hagen,

Soschynski,

Weis

et al. 2023

Rofo

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Background Photon-counting detector computed tomography (PCD-CT) is a promising new technology with the potential to fundamentally change workflows in the daily routine and provide new quantitative imaging information to improve clinical decision-making and patient management. Method The contents of this review are based on an unrestricted literature search of PubMed and Google Scholar using the search terms “photon-counting CT”, “photon-counting detector”, “spectral CT”, “computed tomography” as well as on the authors’ own experience. Results The fundamental difference with respect to the currently established energy-integrating CT detectors is that PCD-CT allows for the counting of every single photon at the detector level. Based on the identified literature, PCD-CT phantom measurements and initial clinical studies have demonstrated that the new technology allows for improved spatial resolution, reduced image noise, and new possibilities for advanced quantitative image postprocessing. Conclusion For clinical practice, the potential benefits include fewer beam hardening artifacts, a radiation dose reduction, and the use of new or combinations of contrast agents. In particular, critical patient groups such as oncological, cardiovascular, lung, and head & neck as well as pediatric patient collectives benefit from the clinical advantages. Key Points: Citation Format

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Section: Oncological Imagingsupporting

confidence: 72%

Section: Thorax Und Brustunclassified

Photon-counting computed tomography – clinical application in oncological, cardiovascular, and pediatric radiology

Hagen,

Soschynski,

Weis

et al. 2023

Rofo

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show abstract

“…This gantry setup bears the disadvantage that the axilla as well as the pectoralis muscle may not be sufficiently included in the field of view 137 . In a study comprising 1222 women, complete or almost complete breast coverage was reported in only 41.9% of the cases, whereas the pectoral muscle was not covered in 56.0% 138 . Wetzl et al 139 compared diagnostic confidence and detection rates of microcalcification in surgical specimen.…”

Section: Breast Ctmentioning

confidence: 99%

“… 137 In a study comprising 1222 women, complete or almost complete breast coverage was reported in only 41.9% of the cases, whereas the pectoral muscle was not covered in 56.0%. 138 Wetzl et al 139 compared diagnostic confidence and detection rates of microcalcification in surgical specimen. They concluded that BCT had a high sensitivity, specificity, and level of confidence, similar to digital breast tomosynthesis.…”

Section: Breast Ctmentioning

confidence: 99%

Computed Tomography 2.0

Lell

Kachelrieß

2023

Invest Radiol

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Computed tomography (CT) dramatically improved the capabilities of diagnostic and interventional radiology. Starting in the early 1970s, this imaging modality is still evolving, although tremendous improvements in scan speed, volume coverage, spatial and soft tissue resolution, as well as dose reduction have been achieved. Tube current modulation, automated exposure control, anatomy-based tube voltage (kV) selection, advanced x-ray beam filtration, and iterative image reconstruction techniques improved image quality and decreased radiation exposure. Cardiac imaging triggered the demand for high temporal resolution, volume acquisition, and high pitch modes with electrocardiogram synchronization. Plaque imaging in cardiac CT as well as lung and bone imaging demand for high spatial resolution. Today, we see a transition of photon-counting detectors from experimental and research prototype setups into commercially available systems integrated in patient care. Moreover, with respect to CT technology and CT image formation, artificial intelligence is increasingly used in patient positioning, protocol adjustment, and image reconstruction, but also in image preprocessing or postprocessing. The aim of this article is to give an overview of the technical specifications of up-to-date available whole-body and dedicated CT systems, as well as hardware and software innovations for CT systems in the near future.

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“…New generations of whole-body spectral CT systems obtain sourcegenerated spectral information from two (or more) scans at different energy levels (dual-energy), or detector-generated spectral response with layered and photon-counting (PC) detectors. The first breast CT scanners with PC detectors are being introduced in clinics (Kalender et al 2017, Berger et al 2019, Schmidt et al 2022) and synchrotron facilities (Longo et al 2016, where, in the latter case, tomography can be performed with low-energy (20-40 keV) monochromatic beams. Spectral CT imaging can improve tissue separation by acquiring data at multiple energy levels, allowing for spectral material decomposition analysis and the creation of e.g., virtual monochromatic images, iodine maps, and density-effective atomic number (ρ/Z eff ) maps.…”

Section: Introductionmentioning

confidence: 99%

Characterization of breast tissues in density and effective atomic number basis via spectral X-ray computed tomography

Vrbaski¹,

Peña²,

Brombal³

et al. 2023

Preprint

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show abstract

Clinical assessment of image quality, usability and patient comfort in dedicated spiral breast computed tomography

Cited by 9 publications

References 30 publications

Photon-counting computed tomography – clinical application in oncological, cardiovascular, and pediatric radiology

Photon-counting computed tomography – clinical application in oncological, cardiovascular, and pediatric radiology

Computed Tomography 2.0

Characterization of breast tissues in density and effective atomic number basis via spectral X-ray computed tomography

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