Essays about: "Image registration"

Showing result 1 - 5 of 86 essays containing the words Image registration.

  1. 1. DEFORMABLE IMAGE REGISTRATION OF SPINE MAGNETIC RESONANCE IMAGES WITH ELASTIX FOR DETAILED CHARACTERIZATION OF DISC LOADING BEHAVIORS

    University essay from

    Author : Zainab Sirat; [2021-05-10]
    Keywords : Medical physics; Registration; MRI; Spine;

    Abstract : Purpose: This work aimed to develop an optimized strategy for registration of spine magnetic resonance (MR) images acquired with and without spinal loading, as well as evaluate the quality of the registration strategy with commonly used quality assessment methods. Method: Previously collected MR images of the lumbar spine of 37 individuals were re analyzed. READ MORE

  2. 2. 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 fromHammers 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

  3. 3. Using Deep Learning to SegmentCardiovascular 4D Flow MRI : 3D U-Net for cardiovascular 4D flow MRI segmentation and Bayesian 3D U-Net for uncertainty estimation

    University essay from Linköpings universitet/Institutionen för datavetenskap

    Author : Omkar Bhutra; [2021]
    Keywords : Convolutional Neural Networks; 4D flow MRI; 3D U-Net; Cardiovascularimage segmentation; Uncertainty estimation; Bayesian 3D U-Net;

    Abstract : Deep convolutional neural networks (CNN’s) have achieved state-of-the-art accuraciesfor multi-class segmentation in biomedical image science. In this thesis, A 3D U-Net isused to segment 4D flow Magnetic Resonance Images that include the heart and its largevessels. READ MORE

  4. 4. Finite Element Head ModelPersonalization by Mesh Morphing

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

    Author : Yann Levin; [2021]
    Keywords : Biomechanics; Finite element; Head models; Image Registration; Mesh morphing; Personalization.;

    Abstract : Finite Element (FE) head models are very convenient tools forthe study of Traumatic Brain Injuries (TBIs) but lack significantanatomical details for the investigation of morphology or age-dependantinjury mechanisms. In this context, the use of deformable registrationalgorithms for the generation of personalized head models is veryconsistent for the development of improved protection systems likehelmets. READ MORE

  5. 5. Image Mosaicking Using Vessel Segmentation for Application During Fetoscopic Surgery

    University essay from Uppsala universitet/Institutionen för informationsteknologi

    Author : Axel Grönberg; [2021]
    Keywords : ;

    Abstract : Twin-to-twin-transfusion syndrome is a condition where there is an imbalance in the shared blood circulation between monochorionic twin fetuses due to certaininter-twin vascular connections (anastomoses) in the placenta which has very high morbidity and mortality rate for both fetuses. Fetoscopic laser occlusive coagulation(FLOC) surgery is commonly used to treat the condition which uses a fetoscope to explore the placenta and a laser to occlude the anastomoses causing the imbalance inblood circulation. READ MORE