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Showing 1 to 7 of 7 for “"CT image quality"”.
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The Effect of Ultra-short Acting Insulin on F-18 FDG PET/CT Image Quality of Patients with Uncontrolled Diabetic Mellitus
혈당이 조절되지 않는 당뇨 환자에서 F-18 FDG PET/CT의 영상의 질은 좋지 않다. 본 연구에서는 당뇨 환자의 F-18 FDG PET에서 초속효성 인슐린의 효과와 임상적 유용성에 대해 알아보고자 하였다. 본 연구는 각종 암으로 진단 받은 당뇨 환자 중 F-18 FDG PET/CT를 시행한 105명(남/여: 68/37, 평균나이: 60±12세)을 대상으로 하였다. F-18 FDG 주사 60분 전 혈당이 190mg/dl 이상인 환자(n=53)에게 초속효성 인슐린(Humalog？？)을 정맥 주사하였다. 혈당이 189mg/dl …
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Improvements on low-cost high-resolution CT system
Computed tomography (CT) is an x-ray based inspection technique used to analyze the three dimensional structure of an object. The goal of this thesis is to show that good CT image quality can be achieved with low cost CT systems while maintaining high resolution and keeping the collection time for …
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Quantitative evaluation of image quality in CT imaging using iodine and nanoparticle-based contrast agents
Abstract Background: Computed tomography (CT) relies on X-ray attenuation differences to distinguish tissues, often enhanced using contrast agents. Although iodine-based media are commonly used, they are limited by toxicity, rapid renal clearance, and risk of allergic reactions. Subsequently …
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The Effect of CT Display Window and Image Plane on Diagnostic Certainty for Characteristics of Canine Elbow Dysplasia
Computed tomography (CT) is an established diagnostic modality for evaluation of canine elbow dysplasia. However, diagnostic sensitivity for elbow abnormalities may be affected by variations in CT image quality. Currently there are no data-based recommendations for elbow CT image display …
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Deep Learning Neural Network-based Sinogram Interpolation for Sparse-View CT Reconstruction
Computed Tomography (CT) finds applications across domains like medical diagnosis, security screening, and scientific research. In medical imaging, CT allows physicians to diagnose injuries and disease more quickly and accurately than other imaging techniques. However, CT is one of the most …
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Improving Cone-Beam Computed Tomography Based Adaptive Radiation Therapy with Deep Learning
… anatomical changes may compromise treatment quality if the treatment plan, prepared prior to therapy, remains unchanged throughout the course. Adaptive radiation therapy (ART) has been developed to address this issue by adapting the treatment plan based on up-to-date patient anatomy. The …
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Applications of Statistical Modeling in Iterative CT Image Reconstruction
Traditionally, x-ray CT images are produced by an algorithm called filtered back projection, or FBP. FBP is an analytical solution to the idealized CT image reconstruction problem, the inverse problem of turning raw x-ray measurements into a full 3-dimensional (3D) image, and is derived assuming a …