Essays about: "Quantitative MRI"

Showing result 21 - 25 of 37 essays containing the words Quantitative MRI.

1. 21. 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

3. 22. 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

4. 23. 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

5. 24. MRI-based quantification of magnetic susceptibility: Assessment of measurement and calculation accuracy

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

   Author : Emma Olsson; [2016]
   Keywords : Medicine and Health Sciences;

   Abstract : An object in an external magnetic field will be magnetized and the degree of magnetization is dependent of the magnetic susceptibility of the object. The local magnetic field inside and around an object in the MR scanner will change due to the magnetization of the object. READ MORE

6. 25. Automatic Detection of Anatomical Landmarks in Three-Dimensional MRI

   University essay from Linköpings universitet/Datorseende

   Author : Hannes Järrendahl; [2016]
   Keywords : Quantitative 3D MRI; Machine learning; Medical image processing; Morphon image registration; 3D Haar features; Random regression forests;

   Abstract : Detection and positioning of anatomical landmarks, also called points of interest(POI), is often a concept of interest in medical image processing. Different measures or automatic image analyzes are often directly based upon positions of such points, e.g. in organ segmentation or tissue quantification. READ MORE