[PDF] Top 20 Cranial CT with Adaptive Statistical Iterative Reconstruction: Improved Image Quality with Concomitant Radiation Dose Reduction
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Cranial CT with Adaptive Statistical Iterative Reconstruction: Improved Image Quality with Concomitant Radiation Dose Reduction
... of iterative-reconstruction algorithm on diagnostic performance, particularly at very high ASIR lev- els, and for definition of an “optimal” level of ASIR effect, particularly with different section ...of ... See full document
7
Full Dose Reduction Potential of Statistical Iterative Reconstruction for Head CT Protocols in a Predominantly Pediatric Population
... the statistical IR technique ASIR was used to mitigate increased image noise from the reductions of tube current, allowing reduced patient examination radiation ...Other statistical IR ... See full document
7
Three-dimensional computed tomography dose optimisation and image quality improvement of abdomen-pelvis using adaptive-iterative dose reduction
... of CT by 161% from 1990 till 1994, based on a national survey (Ng et ...reduce radiation dose from CT in the population is to reduce the CT-related dose in individual ...However, ... See full document
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Radiation Dose Reduction in Paranasal Sinus CT Using Model Based Iterative Reconstruction
... Image quality assessment is reported in Table 2 and illustrated in Fig ...low radiation dose (ie, BONE FBP SD, BONE FBP LD, SOFT FBP ...The image quality for the soft- tissue and ... See full document
6
Temporal Bone CT: Improved Image Quality and Potential for Decreased Radiation Dose Using an Ultra High Resolution Scan Mode with an Iterative Reconstruction Algorithm
... However, image noise was lower with UHR-IR for each individual case, and the paired t test showed this difference to be statistically ...of dose reduc- tion could be potentially less if the zUHR ... See full document
5
Phantom study of the impact of adaptive statistical iterative reconstruction (ASiRTM) on image quality for paediatric computed tomography
... body CT. This phantom study investigated the image quality of CT im- ages acquired with ASiR ™ over a wide range of kVp and mA combinations, using an experimental design based on current ... See full document
14
Image quality improvement using model-based iterative reconstruction in low dose chest CT for children with necrotizing pneumonia
... for CT, the desire to reduce ra- diation dose also ...(FBP) reconstruction limits the possibility of further reducing the radiation dosage, especially when higher spatial resolution and ... See full document
8
The Use of Adaptive Statistical Iterative Reconstruction in Pediatric Head CT: A Feasibility Study
... major CT manufactur- ers have recently introduced IR algorithms for their respective CT units, which include ASIR (GE Healthcare, Milwaukee, Wiscon- sin), IRIS (Siemens, Erlangen, Germany), Adaptive ... See full document
7
Lowering the Dose in Head CT Using Adaptive Statistical Iterative Reconstruction
... the radiation dose burden of radiologic examinations, dose-reduction strategies for CT have attracted marked interest among the research ...the radiation dose in ... See full document
5
A pilot study using low-dose Spectral CT and ASIR (Adaptive Statistical Iterative Reconstruction) algorithm to diagnose solitary pulmonary nodules
... allows reconstruction of the internal stucture of the human body from a large num- ber of x-ray attenuation ...spectral CT in which the energy dependence of the x-ray at- tenuation coefficient is utilized ... See full document
7
Quantitative Analysis of the Effect of Iterative Reconstruction Using a Phantom: Determining the Appropriate Blending Percentage
... of adaptive statistical it- erative reconstruction (ASIR) in a reduced radiation dose while preserving a de- gree of image quality and texture that is similar to that of ... See full document
9
CT of the chest with model-based, fully iterative reconstruction: comparison with adaptive statistical iterative reconstruction
... that radiation doses of chest CT may be further decreased with ...noise reduction and subsequent dose ...of image detail with a higher degree of ASIR ...the reconstruction ... See full document
8
Radiation Dose Reduction Strategies for Neuroradiology CT Protocols
... the radiation dose received in radiology ...the radiation dose associated with neuro- radiology CT ...between image quality and radiation ...recently, CT ... See full document
5
A simple method for low-contrast detectability, image quality and dose optimisation with CT iterative reconstruction algorithms and model observers
... effective dose per year to the population in European countries, due to X-ray pro- cedures, is about ...this dose (range ...of CT exams was 117 per 1000 inhabitants, with an average dose per ... See full document
10
A Comparison of Reconstruction Algorithms Regarding Exposure Dose Reductions during Digital Breast Tomosynthesis
... limited-angle image reconstruction method in which a dataset of projections ac- quired at regular intervals during a single acquisition pass is used to reconstruct planar sections post ...reduced ... See full document
11
Effect of Image Size on Threshold Selection for Segmentation of Dense Homogeneous Objects in Tomographic Reconstructions
... Accurate image segmentation is required for obtaining correct localization, shape, size of tomographic image objects, but it is difficult to obtain, in particular if one needs to segment objects that are ... See full document
5
Can Iterative Reconstruction Improve Imaging Quality for Lower Radiation CT Perfusion? Initial Experience
... imaging quality of axial 5-mm dynamic con- trast-enhanced images, 5 ROIs at the level where the ventricles and the basal ganglia can be seen optimally at Tmax were manu- ally chosen bilaterally (Fig ... See full document
6
ROC study and SUV threshold using quantitative multi-modal SPECT for bone imaging
... the CT is in a 512 2 ...four CT voxels. We performed the SPECT reconstruction in the anisotropic space of the CT frame-of-reference, thus ensuring optimal SPECT-to-CT image data ... See full document
24
Emphysema quantification using chest CT: influence of radiation dose reduction and reconstruction technique
... reduced dose, using a lower thresh- old of -960 HU, -970 HU and -980 HU at 45%, 60% and 75% reduced dose, respectively, resulted in a percentage of emphysema that was not significantly different from the ... See full document
10
Acute Intracranial Hemorrhage in CT: Benefits of Sinogram Affirmed Iterative Reconstruction Techniques
... of image quality, 4 ROI measurements were per- formed on a PACS workstation by use of a circle tool with a di- ameter of 3– 6 mm for the ...in CT of the brain. Image noise (IN) was determined ... See full document
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