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Article
Open AccessIn vitro blood sample assessment: investigating correlation of laboratory hemoglobin and spectral properties of dual-energy CT measurements (ρ/Z)
Our study comprised a single-center retrospective in vitro correlation between spectral properties, namely ρ/Z values, derived from scanning blood samples using dual-energy computed tomography (DECT) with the cor...
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Article
Open AccessFully automated computational measurement of noise in positron emission tomography
To introduce an automated computational algorithm that estimates the global noise level across the whole imaging volume of PET datasets.
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Article
Open AccessDual-energy CT kidney stone characterization—can diagnostic accuracy be achieved at low radiation dose?
To assess the accuracy of low-dose dual-energy computed tomography (DECT) to differentiate uric acid from non-uric acid kidney stones in two generations of dual-source DECT with stone composition analysis as t...
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Article
Open AccessDiagnosis of acute heart failure in CT pulmonary angiography: feasibility and accuracy
To evaluate the feasibility and accuracy of diagnosing acute heart failure (HF) with CT pulmonary angiography (CTPA) in emergency department patients.
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Chapter
Photon-Counting CT: Initial Clinical Experience
Photon-counting detector computed tomography (PCD-CT) is an emerging technology and represents the next milestone in CT developments. Compared to conventional energy-integrating detectors in which an indirect ...
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Article
Letter to the Editor regarding “Comparison of image quality between split-filter twin beam dual energy and single energy images in abdominal CT”
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Article
Low-dose dual-energy CT for stone characterization: a systematic comparison of two generations of split-filter single-source and dual-source dual-energy CT
To compare noise texture and accuracy to differentiate uric acid from non-uric acid urinary stones among four different single-source and dual-source DECT approaches in an ex vivo phantom study.
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Chapter
Clinical Applications of Spectral CT
Dual-energy computed tomography (DECT) has evolved from a research tool to an established clinical imaging modality since its first commercial introduction in the mid-2000s. The possibility to characterize the...
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Article
How patient off-centering impacts organ dose and image noise in pediatric head and thoracoabdominal CT
To assess the impact of patient off-centering on organ dose and image noise for head and thoracoabdominal CT in a pediatric phantom.
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Article
How accurate and precise are CT based measurements of iodine concentration? A comparison of the minimum detectable concentration difference among single source and dual source dual energy CT in a phantom study
To assess the impact of scan- and patient-related factors on the error and the minimum detectable difference in iodine concentration among different generations of single-source (SS) fast kV-switching and dual...
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Article
Comparison of image quality and radiation dose between split-filter dual-energy images and single-energy images in single-source abdominal CT
To compare image quality and radiation dose of abdominal split-filter dual-energy CT (SF-DECT) combined with monoenergetic imaging to single-energy CT (SECT) with automatic tube voltage selection (ATVS).
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Article
Erratum to: Impact of model-based iterative reconstruction on low-contrast lesion detection and image quality in abdominal CT: a 12-reader-based comparative phantom study with filtered back projection at different tube voltages
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Article
Impact of model-based iterative reconstruction on low-contrast lesion detection and image quality in abdominal CT: a 12-reader-based comparative phantom study with filtered back projection at different tube voltages
To evaluate the impact of model-based iterative reconstruction (MBIR) on image quality and low-contrast lesion detection compared with filtered back projection (FBP) in abdominal computed tomography (CT) of si...
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Article
Automatic tube current modulation for whole-body polytrauma CT with immobilization devices: is there an increase in radiation dose and degradation of image quality?
The objective of this study was the assessment of the image quality and radiation dose in polytrauma CT using immobilization devices. An anthropomorphic whole body and a liver phantom were scanned on a 128-sli...
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Article
Organ-based tube current modulation in a clinical context: Dose reduction may be largely overestimated in breast tissue
Organ-based tube current modulation aims to reduce exposure to radiosensitive organs like the breasts by considering their anatomical location and altering tube current during rotation. Former phantom studies ...
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Chapter
Dose-Lowering Strategies in Computed Tomography Imaging of the Lung and Heart
Since its first introduction by Hounsfield and Cormack in 1972, computed tomography (CT) has become one of the most important imaging modalities in diagnostic imaging, because of its strong impact on patient o...
