Essays about: "Image Derived Input Function"

Found 4 essays containing the words Image Derived Input Function.

  1. 1. Quantification of cerebral blood flow with 15O-water PET : A comparison study between PET/CT and PET/MR and two different blood sampling instruments

    University essay from Umeå universitet/Institutionen för fysik; Umeå universitet/Diagnostisk radiologi

    Author : Amanda Eriksson; [2021]
    Keywords : Cerebral Blood Flow; CBF; oxygen-15-labelled water; PET CT; PET MR; Quantification of CBF; Image Derived Input Function; IDIF; Blood Sampled Input Function; BSIF; Arterial Input Function; AIF; Tracer Kinetic Modelling; Single Tissue Compartmental Model; 1TCM;

    Abstract : Cerebral blood flow quantification is a vital diagnostic tool for disease monitoring and used for diagnosing a variation of pathological conditions. The human brain requires roughly about 20 % of the total cardiac output to sustain normal functioning, hence the perfusion of blood is an important factor to deliver oxygenated blood. READ MORE

  3. 2. Developing a spiking neural model of Long Short-Term Memory architectures

    University essay from Lunds universitet/Fysiska institutionen; Lunds universitet/Förbränningsfysik

    Author : Isabella Pozzi; [2018]
    Keywords : Physics and Astronomy;

    Abstract : Current advances in Deep Learning have shown significant improvements in common Machine Learning applications such as image, speech and text recognition. Specifically, in order to process time series, deep Neural Networks (NNs) with Long Short-Term Memory (LSTM) units are widely used in sequence recognition problems to store recent information and to use it for future predictions. READ MORE

  4. 3. Evaluation of Methods for Obtaining an Image Derived Input Function from Dynamic PET-images

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

    Author : Sofia Jonsson; [2016]
    Keywords : ;

    Abstract : Dynamic PET is a technique to follow the uptake kinetics of radioactive labelled molecules in the human body. The kinetic behaviour may be analysed to acquire parameters, such as perfusion of blood to tissue, with the knowledge of the blood activity time curve (also called input function). READ MORE

  5. 4. System for measurement of cohesive laws

    University essay from Institutionen för teknik och samhälle

    Author : Tomas Walander; [2009]
    Keywords : End Notched Flexure; J-integral; Cohesive law; Finite element method; Energy release rate;

    Abstract : In this thesis an experimental method to calculate cohesive characteristics for an adhesive layer in a End Notched Flexure (ENF) specimen is presented and evaluated. The method is based on the path independent J-integral where the energy release rate (ERR) for the adhesive is derived as a function of the applied forces and the rotational displacements at the loading point and at the supports of the specimen. READ MORE