Essays about: "segmentation of brain"

Showing result 11 - 15 of 45 essays containing the words segmentation of brain.

1. 11. ATLAS-BASED SEGMENTATION OF ULTRAHIGH-RESOLUTION STRUCTURAL MR HEAD IMAGES ACQUIRED AT 7 TESLA

   University essay from

   Author : Frida Johansson; [2022-01-13]
   Keywords : Medical physics; Anatomical segmentation; Brain; MRI; 7 Tesla; Pincram; MAPER; Shape based averaging; Ultrahigh resolution;

   Abstract : Purpose: The purpose of this work was to find out how the existing brain atlases and segmentation algorithms perform when applied to ultrahigh-resolution MR brain images, acquired with a 7-Tesla scanner. Also to make adaptations to deal with the potential challenges and evaluate the quality of the anatomical segmentations of the 7- Tesla images. READ MORE

3. 12. Synthesis of Pediatric Brain Tumor Image With Mass Effect

   University essay from KTH/Skolan för kemi, bioteknologi och hälsa (CBH)

   Author : Yu Zhou; [2022]
   Keywords : Deep learning; Medical Imaging; Data Augmentation; Children Brain Tumor; Mass effect;

   Abstract : During the last few years, deep learning-based techniques have made much progress in the medical image processing field, such as segmentation and registration. The main characteristic of these methods is the large demand of medical images to do model training. READ MORE

4. 13. Characterization of discrepancies between manual and automatic segmentation to improve anatomical brain atlases

   University essay from

   Author : Anna Sörensson; [2021-05-10]
   Keywords : Medical physics; Anatomical brain atlas; Image segmentation; Image registration;

   Abstract : Purpose: To characterize discrepancies between expert manually segmented brain images from Hammers Atlas Database and automatically generated segmentations of the same images; to decide whether they can be attributed to flaws in the automatic segmentation or in the manual segmentation; and to determine general rules that enable these decisions. Theory: Image segmentation plays an important role in clinical neuroscience and experimental medicine for extraction of information from medical images, and it is a fundamental image processing step in medical image analysis. READ MORE

5. 14. ATLAS DATABASES OF HUMAN BRAIN ANATOMY: QUALITATIVE AND QUANTITATIVE COMPARISON

   University essay from

   Author : Amanda Philipsson Franzén; [2021-01-11]
   Keywords : Medical physics; Brain atlas concordance problem; Quantitative comparison; Qualitative comparison; Hammersmith; 2012 MICCAI Multi-Atlas Labelling Challenge Data;

   Abstract : The purpose of this study was to quantitatively and qualitatively compare the two brain atlases databases, Hammersmith and 2012 MICCAI Multi-Atlas Labelling Challenge data, by developing a quantitative method. Theory Anatomical atlases of the human brain provide reference information about its structure. READ MORE

6. 15. Deep Learning with Importance Sampling for Brain Tumor MR Segmentation

   University essay from KTH/Optimeringslära och systemteori

   Author : Hanna Westermark; [2021]
   Keywords : Deep learning; importance sampling; segmentation; convolutional neural networks; MRI; brain tumour; Djupinlärning; importance sampling; segmentering; faltningsnätverk; MRI; hjärntumör;

   Abstract : Segmentation of magnetic resonance images is an important part of planning radiotherapy treat-ments for patients with brain tumours but due to the number of images contained within a scan and the level of detail required, manual segmentation is a time consuming task. Convolutional neural networks have been proposed as tools for automated segmentation and shown promising results. READ MORE