Essays about: "qMRI"

Showing result 1 - 5 of 7 essays containing the word qMRI.

1. 1. Implementation and verification of a quantitative MRI method for creating and evaluating synthetic MR images

   University essay from Karlstads universitet/Institutionen för ingenjörsvetenskap och fysik (from 2013)

   Author : Aleksander Blagoiev; [2020]
   Keywords : MRI; Quantitative MRI; Synthetic MRI;

   Abstract : The purpose of this thesis was to implement and quantitatively test a quantitative MRI (qMRI) method, from which synthetic MR images are created and also evaluated. The parameter maps of T1, T2*, and effective proton density (PD*) were tested with reference tubes containing different relaxation times, and concentrations of water (H2O) and heavy water (D2O). READ MORE

3. 2. Automatic Segmentation and Classification of Multiple Sclerosis Lesions Using Quantitative Magnetic Resonance Imaging

   University essay from Linköpings universitet/Institutionen för medicinsk teknik

   Author : Johanna Alfredsson; [2019]
   Keywords : Lesion Segmentation; Multiple Sclerosis; MS; Synthetic MRI; MRI; Lesion Evolution; Lesion Progression; Lesion Analysis; Medical Imaging; qMRI; Quantitative MR; Automatic Segmentation;

   Abstract : Multiple sclerosis is a neurological disease causing a degeneration of myelin around the axons in the central nervous system. This process leaves traces in the form of lesions, which can be distinguished in an MRI examination. It is important to detect these at an early stage to state diagnosis and initiate medication. READ MORE

4. 3. Automatic Segmentation of Knee Cartilage Using Quantitative MRI Data

   University essay from Linköpings universitet/Datorseende

   Author : Marcus Lind; [2017]
   Keywords : qMRI; quantitative MRI; automatic segmentation; knee cartilage; SVM classifier;

   Abstract : This thesis investigates if support vector machine classification is a suitable approach when performing automatic segmentation of knee cartilage using quantitative magnetic resonance imaging data. The data sets used are part of a clinical project that investigates if patients that have suffered recent knee damage will develop cartilage damage. READ MORE

5. 4. Image Registration and Analysis within quantitative MRI to improve estimation of brain parenchymal fraction

   University essay from Linköpings universitet/Institutionen för medicinsk teknik

   Author : Danish Bhat; [2016]
   Keywords : Image Registration; quantitative MRI;

   Abstract : In certain neuro-degenerative diseases likemultiple sclerosis (MS), the rate of brain atrophy can be measured by monitoring the brain parenchymal fraction (BPF) in such patients. The BPF is defined as the ratio of brain parenchymal volume (BPV, defined as the total volume of gray matter tissue, white matter tissue and other unidentified tissue) and intracranial volume (ICV, the total volume of the skull). READ MORE

6. 5. Automatic Brain Segmentation into Substructures Using Quantitative MRI

   University essay from Linköpings universitet/Datorseende

   Author : Karin Stacke; [2016]
   Keywords : brain; brain segmentation; qMRI; MRI; quantitative MRI; substructures; image processing; image analysis; medical imaging; medical image processing;

   Abstract : Segmentation of the brain into sub-volumes has many clinical applications. Manyneurological diseases are connected with brain atrophy (tissue loss). By dividingthe brain into smaller compartments, volume comparison between the compartmentscan be made, as well as monitoring local volume changes over time. READ MORE