Essays about: "Scintigraphy"

Showing result 1 - 5 of 12 essays containing the word Scintigraphy.

  1. 1. Feasibility of quantitative 99mTc-DPD scintigraphy SPECT/CT for assessing the burden of ATTR cardiac amyloidosis

    University essay from Umeå universitet/Radiofysik

    Author : Sajad Kadhim Khalaf; [2023]
    Keywords : QSPECT; Amyloidosis; ATTR; LVMI; Recovery Coefficient; SUV; Calibration;

    Abstract : Background: Amyloid transthyretin (ATTR) cardiomyopathy is caused by the deposition of misfolded proteins, known as amyloid fibrils, in the myocardium. Quantitative Single Photon Emission Computed Tomography (QSPECT) utilizing 99mTc-DPD scintigraphy has the potential to assess ATTR-suspected cardiac amyloidosis (CA). READ MORE

  3. 2. Volume calculation of the thyroid gland from SPECT images based on Monte Carlo simulations

    University essay from Umeå universitet/Radiofysik; Umeå universitet/Institutionen för fysik

    Author : Niklas Palmqvist; [2018]
    Keywords : nuclear medicine xeleris thyroid hyperthyroidism thyrotoxicosis monte carlo technetium iodine;

    Abstract : In this study the volume determination which is a part of the doseplanning for patients with thyrotoxicosis was investigated. The aim was to find an accurate method to determine the active volume with single photon emission tomography (SPECT) which in several studies have shown better results than with the currently used method planar scintigraphy (PS). READ MORE

  4. 3. Segmentation in Skeletal Scintigraphy Images using Convolutional Neural Networks

    University essay from Lunds universitet/Matematik LTH

    Author : Konrad Gjertsson; [2017]
    Keywords : Image Analysis; Deep Learning; Convolutional Neural Networks; Scintigraphy; Mathematics and Statistics;

    Abstract : In this work we have addressed the task of segmentation in skeletal scintigraphy images with deep learning models, where we research different approaches to convert convolutional neural networks designed for classification tasks to powerful pixel wise predictors. We explore different network architectures where two primary research paths have been followed. READ MORE

  5. 4. Evaluation of differences in attenuation pattern for myocardial perfusion scintigraphy between CZT and conventional gamma cameras

    University essay from Lunds universitet/Medicinsk strålningsfysik, Lund; Lunds universitet/Sjukhusfysikerutbildningen

    Author : Elin Martinsson; [2016]
    Keywords : Medicine and Health Sciences;

    Abstract : The new CZT camera has a different technology compared to conventional scintillation gamma cameras. The CZT camera have pinholes instead of parallel hole collimators, a static gantry instead of a rotating one and detection material made of a semiconductor in- stead of a scintillation crystal. READ MORE

  6. 5. Classification in Bone Scintigraphy Images Using Convolutional Neural Networks

    University essay from Lunds universitet/Matematik LTH

    Author : Johnny Dang; [2016]
    Keywords : machine learning; deep learning; neural networks; convolutional neural networks; artificial neural network; ANN; CNN; bone scintigraphy; bone scan; prostate cancer; bone metastasis; bone scan index; Technology and Engineering;

    Abstract : The main goal of this thesis is to design and implement a convolutional neural network (CNN) to classify whether hotspots in bone scintigraphy images represent cancer metastases, caused by prostate cancer, or some other physiological process. A side task was included, where another CNN was designed and trained to classify whether a bone scintigraphy image image is acquired from the front of the patient (anterior) or from the back (posterior). READ MORE