Essays about: "Image Registration"

Showing result 16 - 20 of 110 essays containing the words Image Registration.

1. 16. 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

3. 17. Deformable registration when combining brachytherapy and external beam radiotherapy

   University essay from KTH/Medicinsk avbildning

   Author : Lisa Mach; [2021]
   Keywords : ;

   Abstract : Patients with cervical cancer are treated both with external beam radiotherapy(EBRT) and brachytherapy (BT) which involves an applicator. During the treatments, CT-images are taken and to perform dose calculations, deformable image registration (DIR) is performed. READ MORE

4. 18. Image inpainting methods for elimination of non-anatomical objects in medical images

   University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

   Author : Andrea Lorenzo Polo; [2021]
   Keywords : Medical Imaging; Tumor Ablation; Inpainting; U-Net; Convolutional Neural Network;

   Abstract : This project studies the removal of non-anatomical objects from medical images. During tumor ablation procedures, the ablation probes appear in the image, hindering the performance of segmentation, registration, and dose computation algorithms. These algorithms can also be affected by artifacts and noise generated by body implants. READ MORE

5. 19. Domain Adaptation for Combined CT and CBCT Deep Learning Segmentation

   University essay from Lunds universitet/Matematik LTH

   Author : Jonas Berg; [2021]
   Keywords : CT; CBCT; Deep Learning; Medical Image Segmentation; Radiotherapy; Domain Adaptation; CycleGAN; Domain Adversarial Neural Network; U-Net; Data Augmentation; Machine Learning; Technology and Engineering;

   Abstract : Computed tomography (CT) segmentation models are frequently used within radiotherapy treatment planning, but similar models are not available to the related imaging modality cone beam computed tomography (CBCT) due to the scarcity of labeled data from this domain. Such models could have multiple clinical applications whereby it is of interest to study whether the CT segmentation models can be adapted to generalize to the CBCT domain. READ MORE

6. 20. Deformable image registration using anatomical landmarks in tubular structures

   University essay from KTH/Medicinteknik och hälsosystem

   Author : Jenny Wingqvist; [2021]
   Keywords : Medical image analysis; radiation therapy; deformable image registration; anatomical landmarks; bronchial tree; vascular tree;

   Abstract : Cancer is one of the leading causes of death in the world, but advances in research and development of treatment methods is constantly ongoing to reduce the number of deaths and the amount of suffering. One of many approaches is radiation therapy, which uses high doses of radiation to kill tumors. READ MORE