![]() Methods based on an active contour model (ACM) can be used to reform a poorly constructed SSM. With a small number of reference models, the 3D reconstruction model is inaccurate. The accuracy of the mean model depends on the number of reference models. SSMs create a mean model from several volumetric reference models. These models are constructed from a collection of image data their shapes and sizes can be heavily altered. Methods have been developed to generate a DRR based on statistical shape models (SSMs). The techniques used for 3D reconstruction from 2D x-ray images are discussed in Miscellaneous section. A DRR is generated from multiple CT or MRI scans. Digitally reconstructed radiographs (DRRs) have been used to overcome this limitation. Thus, x-ray-based modeling requires a different methodology. Reconstruction processes require more images to develop an organ in 3D. Radiography is performed only from the posterior-anterior and lateral (LAT) angles 3D reconstruction based on x-rays is challenging because there are only one or two initial images. assessed abnormalities in rheumatoid arthritis using radiography, MRI, and ultrasonography in a comparative study. used a laser scanning confocal microscope for data acquisition Zollhöfer et al. The choice of data acquisition method is a determining factor in the effectiveness of 3D reconstruction algorithms. Of these, ultrasound is noninvasive and harmless. 2D medical image formats such as magnetic resonance imaging (MRI), CT, positron emission tomography (PET), x-rays, ultrasound, and microscopy have been used for 3D reconstruction. constructed a 3D model to diagnose cervical tumors from ultrasound images using virtual bronchoscopy. constructed a 3D model of the respiratory behavior of the lungs at the inhale and exhale stages. 3D reconstruction can help in planning and monitoring pre-operative and post-operative medical conditions of patients. Use of 3D reconstruction in the medical sciences began with the invention of a computed tomography (CT) scanner by Godfrey Hounsfield, useful for training, virtual surgery, and gaining insight into the behavior of organs in vivo. 3D reconstruction produces a digital representation of a real-world object. This process has gained significant attention in recent years owing to its wide range of applications in fields including medicine, entertainment, archaeology, and robotics. Three-dimensional (3D) reconstruction is used to create a 3D model of an object or scene from a series of two-dimensional (2D) images (Fig.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |