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 20 of 78 for “"PET/CT"”.
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Motion correction of PET/CT images
… Emission Tomography/Computed Tomography (PET/CT) is one of the many tools currently used to diagnose health and disease in patients. PET/CT explorations are typically used to detect: cancer, heart diseases, disorders in the central nervous system. Since PET/CT studies can take up to 60 …
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Gallium-68 DOTATATE PET/CT in Neuroendocrine Tumors
… general metadata -- e.g., title, author, abstract, subject headings, etc. -- is publicly available, but access to the submitted files is restricted to UT Southwestern campus access and/or authorized UT Southwestern users.
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Thoracic Radiotherapy Treatment Planning With Cine Pet/Ct
… Four-dimensional computed tomography (4D-CT) is a useful tool to image tumor motion during normal respiration. Treatment margins can be reduced by targeting the motion path of the tumor. The expense and complexity of 4D-CT, however, may be cost-prohibitive at some facilities. We developed …
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Assessment of New Innovations In Pet/Ct For Respiratory Motion Correction
… Emission Tomography/Computed Tomography (PET/CT) is a vital tool used for stating and treatment response assessment of patients due to its ability to visualize and accurately quantify the bio-distribution of radiolabeled pharmaceuticals. However, due to the long acquisition times, …
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Detecting prostate cancer metastases - PET/CT and the sentinel node technique
… invasive and non-invasive modalities for detecting metastases are imperfect. Positron-emission tomography fused with computed tomography (PET/CT) is a non-invasive method for detecting metastases that is presently evaluated for prostate cancer. Fluoride and choline are PET/CT tracers with …
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Image Quality Optimisation and Dose Management in CT, SPECT/CT, and PET/CT
The significant increase in the use of CT, alone or combined with SPECT or PET, has raised concerns about patient radiation exposure and the consequent increased risk of malignancy later in life. The overall objective of this work was to evaluate and optimise different approaches for minimising …
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Statistical methods for quantification of voxel-level image noise in PET/CT imaging
… emission tomography/computed tomography (PET/CT) scan is an important diagnostic tool in modern medicine, e.g. for staging or treatment planning in the field of oncology. Accurate and validated methods for estimating PET image noise are helpful for interpretation of the image and …
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Registration of pre-operative lung cancer PET/CT scans with post-operative histopathology images
… cancer, such as Positron Emission Tomography (PET) or Computed Tomography (CT), currently provide insuffcient information about the cellular make-up of the lesion microenvironment, unless they are compared against the gold standard of histopathology.The aim of this retrospective study was to …
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Biophysical Considerations in the Precision of Quantitative <sup>18</sup>F-FDG PET/CT
… Tomography is increasingly being used as a functional marker of disease states, both adequate image quality and robust quantification are critical components of such imaging studies. A variety of both biological and physical factors affect these qualities in significant ways. As PET technology …
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The threshold of clinical severity of cervical dystonia for positive 18F-FDG PET/CT study
… emission tomography/computed tomography (18F-FDG PET/CT) findings and to determine the threshold of the clinical severity of CD for acquisition of positive 18F-FDG PET/CT study findings. METHODS: Forty-seven subjects who showed torticollis as one of the symptoms of CD were included. The clinical …
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Relation between F-18 FDG Uptake of PET/CT and BRAFV600E Mutation in Papillary Thyroid Cancer
… (FDG) uptake are potential prognostic factors of papillary thyroid cancer (PTC). This study was performed to investigate the relationship between the BRAFV600E mutation and F-18 FDG uptake in PTC. MATERIALS AND METHODS: We retrospectively included 169 PTC patients who underwent F-18 FDG …
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Comparação entre imagens adquiridas em apneia e respiração livre de lesões pulmonares por PET/CT ¹⁸F-FDG
… trabalho teve como objetivo a análise de imagens PET/CT com dois protocolos: PET/CT com respiração livre e PET/CT no tórax inspirado em apneia, comparando-os para avaliação semiquantitativa e qualitativa da caracterização de lesões pulmonares hipercaptantes. Para isso, participaram do estudo 9 …
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PET/CT como biomarcador precoz de respuesta en pacientes con metástasis: aportación de los microarrays de expresión génica.
… de expresión génica (MAGE) a la definición del PET/CT como un biomarcador cualificado de respuesta temprana en pacientes metastáticos. Es conocido que la proliferación de las células cancerosas consume una elevada cantidad de glucosa, que es convertida en lactato aún en presencia de oxígeno …
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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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골경화성 골전이를 동반한 유방암 환자에서 F-18 fluoride PET/CT의 유용성
Bone metastasis is an important factor for treatment and prognosis of breast cancer patients. Whole body bone scintigraphy can be used to evaluated bone metastases and also F-18 FDG PET/CT seems to exhibit high specificity and accuracy to detect skeletal metastases. However there is the limitation …
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Evaluation of 18F FDG-PET/CT in Patients with Gastric Signet Ring Cell Carcinoma : Correlation with GLUT-1 Expression and Histologic Finding
… confirmed GSRC who underwent a pre-operative PET/CT were enrolled. The maximum standardized uptake value (SUVmax) was compared with histological parameters and GLUT-1 expression. GLUT-1 expression was divided into membranous or cytoplasmic group. RESULT: The SUVmax was significantly higher in …
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Comparison of 18F-Fluorodeoxyglucose (FDG) positron emission tomography/computed tomography (18F-FDG PET/CT) and conventional imaging (CI) for locally advanced breast cancer staging: a prospective study from a tertiary hospital cancer centre in Western Cape
… distant metastases is one important prognostic factor in locally advanced breast cancer (LABC), accurate staging at diagnosis is crucial to ensure patients receive the appropriate treatment. Increasing evidence shows that the use of 18F-FDG PET/CT for disease staging of LABC may improve diagnostic …
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The role of PET/CT in the differential diagnosis of thymic tumors: a retrospective case series and comparative literature review with other imaging modalities
… από τη συμβατική αξονική τομογραφία (CT) δεν επιτρέπουν πάντα την ακριβή διάκριση μεταξύ θυμωμάτων και θυμικών καρκινωμάτων, ειδικά στις διαγνωστικά αμφίβολες περιπτώσεις. Η παρούσα εργασία διερευνά τον τρόπο με τον οποίο η 18F-FDG PET/CT συμβάλλει στη διαστρωμάτωση των θυμικών όγκων …
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