[PDF] Top 20 Patient-Specific Image Quality and Dose Estimation for Contrast Enhanced CT.
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Patient-Specific Image Quality and Dose Estimation for Contrast Enhanced CT.
... in all simulations in this thesis. The scanner was equipped with 64 arrays/rows of detectors, allowing the user to select a beam collimation of 1.25–40 mm. The scanner can operate in both axial and helical scanning modes ... See full document
134
Reduced Dose with Maintained Image Quality Utilizing 100 kVp Carotid CT Angiography
... compare image quality and radiation dose using 100- and 120-kVp techniques for carotid CT ...and contrast-to-noise ratio (CNR) were calculated for locations along the carotid artery, ... See full document
8
Advanced Modeled Iterative Reconstruction in Low Tube Voltage Contrast Enhanced Neck CT: Evaluation of Objective and Subjective Image Quality
... underwent contrast-enhanced neck CT between November 2014 and February ...for contrast-enhanced neck CT in adults on the DSCT scanner used in October ...for ... See full document
8
Optimization of Contrast Material Dose for Abdominal Multi Detector Row CT: Predicting Patient Lean Body Weight by Using Preliminary Transverse CT Images
... The dose and rate of iodinated contrast medium used during abdominal multi-detector row computed tomogra- phy (MDCT) need to be tailored to individual patients in order to obtain uniform vascular and ... See full document
10
Diagnostic property of direct referral from general practitioners to contrast-enhanced thoracoabdominal CT in patients with serious but non-specific symptoms or signs of cancer: a retrospective cohort study on cancer prevalence after 12 months
... low- dose CT of chest plus abdominal ultrasound, low- dose thoracoabdominal CT or thoracoab- dominal contrast- enhanced CT ... See full document
7
Multiphase CT Angiography versus Single Phase CT Angiography: Comparison of Image Quality and Radiation Dose
... radiation dose would be the same by using a sampling interval of either 1 or ...Radiation dose is a critical issue in CT studies, especially with regard to patient populations with ⬎1 study, ... See full document
8
Balancing Radiation Dose and Image Quality: Clinical Applications of Neck Volume CT
... by CT tech- nologists by subjective estimation of patients’ body size, often resulting in inconsistent image ...in CT examinations of the ...regarding CT of the chest, abdomen, and ... See full document
5
Radiation dosimetry of 18F-FDG PET/CT: incorporating exam-specific parameters in dose estimates
... diagnostic CT may be more or less than the radiation dose from a diagnostic ...diagnostic CT may appear to be qualitatively equivalent but dosimetrically different be- cause the PET/CT with ... See full document
11
Comparison of Image Quality Between Conventional and Low Dose Nonenhanced Head CT
... the CT tube current on the basis of the patient’s body habitus, as defined by the scout image ...to patient weight or age ...abdominal CT and 0.07% for pediatric head CT, both of which ... See full document
6
Image quality and pathology assessment in CT Urography: when is the low-dose series sufficient?
... the contrast-enhanced phases were considered significantly better for determin- ation of renal ...after contrast injection are designed to render anatomical features in the best possible ... See full document
9
Impact of Model Based Iterative Reconstruction on Image Quality of Contrast Enhanced Neck CT
... MBIR image algorithm with and without the use of a thyroid shield to more accurately compare the image quality of ASiR and ...qualitative image analysis was a simultaneous assessment of ... See full document
6
A simple method for low-contrast detectability, image quality and dose optimisation with CT iterative reconstruction algorithms and model observers
... for specific study conditions; (2) no univocal and absolute detect- ability scoring is provided as ...and specific setup possibilities, should probably be adopted in future to assist better and predict ... See full document
10
Image quality improvement using model-based iterative reconstruction in low dose chest CT for children with necrotizing pneumonia
... hanced CT, so the standard protocol for NP in our hos- pital was to perform low dose enhanced ...in CT images according to ...both image quality and image ... See full document
8
Sensitivity of enhanced MR in multiple sclerosis: effects of contrast dose and magnetization transfer contrast
... two contrast-enhanced T1-weighted images (with the same acquisition parameters as before contrast injection) obtained 5 minutes after the injection of contrast ...two ... See full document
5
Contrast enhanced MR Angiography of Supraaortic Vessels: The Effect of Voxel Size on Image Quality
... enhancement in all patients. No major venous enhancement and no ring artifact were observed, and this was in agreement with pre- viously published studies evaluating the effective- ness of a test bolus to calculate the ... See full document
7
Contrast Enhanced Spiral CT of the Head and Neck: Comparison of Contrast Material Injection Rates
... spiral CT of the head and ...of contrast material ...of contrast agent administered immediately before the delayed scanning sequence might optimize tis- sue enhancement on delayed ...of ... See full document
5
A Patient Dose Reduction Technique for Neuroendovascular Image Guided Interventions: Image Quality Comparison Study
... Disclosures: Ciprian N. Ionita—RELATED: Grant: Toshiba Medical Systems, Com- ments: research grant; UNRELATED: Employment: University at Buffalo, Comments: Assistant Professor in the Biomedical Engineering ... See full document
8
Biodegradable double-targeted PTX-mPEG-PLGA nanoparticles for ultrasound contrast enhanced imaging and antitumor therapy in vitro
... Conventional UCAs such as lipid-shelled SonoVue which was filled with sulfur hexafluoride gas have been widely used in clinic work. These types of UCAs have the function of excellent contrast enhanced ... See full document
11
Underwater Image Segmentation using CLAHE Enhancement and Thresholding
... and image resolution ratio are improved ...low contrast; unbalance gray scales and fuzzy edge of objects under the influence of the imaging condition and some character of water ...environment image ... See full document
6
Patient awareness, perception and attitude to contrast-enhanced CT examination: Implications for communication and compliance with patients’ preferences
... Two-thirds of patients will receive examination results within 3 days, mostly when visiting the physician. In our experience, composing a report with a concise conclusion in a timely manner facilitates patient ... See full document
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