Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 13 of 13 for “"Enhanced CT"”.
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Acute Kidney Injury in In-patient undergoing Enhanced CT
배경: 최근 의학기술의 발달에 따라 조영제에의 노출은 증가 추세이나 부작용을 줄이기 위한 저삼투질 비이온성 조영제의 보급으로 조영제에 의한 신손상의 증감에 대해 많은 보고가 있다. 본 연구에서는 조영제 사용 전산화 단층촬영을 시행한 입원환자에서 급성 신손상의 발생빈도와 시점에 대해 점검해보고자 하였다. 대상 및 방법: 2010년 3월 1일부터 7월 30일까지 5개월동안 아주대학교 병원에 입원하여 전산화 단층촬영을 시행받은 환자 128명을 대상으로 하였다. 의무기록과 조영제 투여 전후의 검사실 소견을 조사하였고 조영제에 의한 급성 …
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Modeling and Optimization of Individualized Liver Contrast-enhanced CT Imaging
<p>More than half of clinical CT imaging in the United States involves the use of iodinated contrast materials. The use of such contrast agents in CT imaging enhances tissue contrast, particularly in soft tissue organs such as the liver, pancreas, spleen, and kidneys, and thus improves the …
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Role of non-enhanced CT characteristics for differentiating reversible and irreversible brain tissue injury and estimating the tissue fate in acute ischaemic stroke
… based on advanced imaging techniques such as CT perfusion and MRI. However, the universal availability of these techniques is limited. Non-enhanced computed tomography (NECT) is the most widely accessible imaging technique and mainly used to exclude contraindications to treatment, such as …
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Evaluation of Tumor-associated Stroma and Its Relationship with Tumor Hypoxia Using Dynamic Contrast-enhanced CT and 18F Misonidazole PET in Murine Tumor Models
http://pubs.rsna.org/doi/full/10.1148/radiol.2015150416
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Combination of CT-based Radiomics Features and Clinical Data for Predicting Tumor Genetic Profile in patients with Intrahepatic Cholangiocarcinoma
… as potential targets for systemic therapies. Objective: This study aims to determine whether radiomic features extracted from contrast-enhanced CT scans can predict iCCA genetic alterations non-invasively. Methods: Consecutive patients diagnosed with mass-forming iCCA between January 2016 and June …
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Evaluation of the Normal Equine Pituitary Gland
Computed tomography (CT) is becoming more available as a diagnostic tool in the evaluation of the equine skull and brain. Objectives of this study were: 1) refine a CT protocol for evaluating the equine pituitary gland, 2.) define the CT anatomy of the pituitary region, 3.) determine a set of …
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Evaluation eines hepatischen Perfusionsindex zur Früherkennung von Tumorrezidiven nach RFA und Erkennung von Leber-Malignomen bei Leberzirrhose
… value of the volumetric arterial enhancement fraction (AEF) of the liver with color mapping for the early detection of tumor relapse after hepatic radiofrequency ablation (RFA) and for malignant liver tumor in liver cirrhosis. Quantitative AEF color maps of the whole liver were computed from …
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Investigation of Quatitative Image Features From Pretreatment Ct and Fdg-Pet Scans In Stage Iii Nsclc Patients Undergoing Defintive Radiation Therapy
… if quantitative image features (QIFs) extracted from computed tomography (CT) and flourodeoxyglucose (FDG) positron emission tomography (PET) could provide prognostic information to improve outcome models. Our goal for this work was to determine if it may one day be feasible to incorporate …
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Implementation,Validation and Application of an Automated Motion Correction Algorithm in Hepatic Perfusion CT for Image-Guided Radiotherapy
Functional imaging holds promise in guiding, evaluating and predicting efficacy of cancer treatment. Perfusion imaging provides high resolution functional information generated by applying a model to a dynamic series of contrast enhanced anatomical images. The objectives of this thesis are: 1) to …
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CT angiogram findings in patients presenting with mechanical strangulation and near hanging injuries
… neurological outcome. In developed countries, CT angiography (CTA) of the head and neck is performed as a screening tool in the acute clinical setting. This study was undertaken to assess the prevalence of vascular injury in patients presenting acutely to GSH trauma unit with these injuries and …
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Comparative imaging of surgical small intestinal disease in dogs: evaluation of pre-operative contrast-enhanced ultrasound, intra-operative contrast-enhanced ultrasound, and triple-phase contrast-enhanced computed tomography
… in canine patients seen in veterinary practices. Failure to identify ischemic tissue intra-operatively can result in surgical dehiscence, require surgical revision, and lead to sepsis or death. Currently contrast-enhanced computed tomography (CT) is the standard of care for evaluating …
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Mechanical High-Intensity Focused Ultrasound (Histotripsy) in Dogs with Spontaneously Occurring Soft Tissue Sarcomas
… complete removal with extensive surgical resection, which in many cases is not feasible. As a result, there is need for alternative therapies. Objectives: The primary objective of this study was to demonstrate safety and feasibility of histotripsy in a small animal model of spontaneous STS. …
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Auto-Segmentation In Pancreatic and Liver Radiation Therapy
… dose-escalated regimens, such as stereotactic body radiation therapy (SBRT), are emerging as an important pillar of the management of liver and pancreatic cancer. The success of these treatment modalities hinges upon the precise and standardized segmentation of organs-at-risk and target …