Browsing by Author "Aganj, Iman"

Now showing items 1-8 of 8

    • An algorithm for optimal fusion of atlases with different labeling protocols 

      Iglesias, Juan Eugenio; Sabuncu, Mert Rory; Aganj, Iman; Bhatt, Priyanka; Casillas, Christen; Salat, David H.; Boxer, Adam; Fischl, Bruce R.; Van Leemput, Koen (Elsevier BV, 2015)
      In this paper we present a novel label fusion algorithm suited for scenarios in which different manual delineation protocols with potentially disparate structures have been used to annotate the training scans (hereafter ...

    • as-PSOCT: Volumetric microscopic imaging of human brain architecture and connectivity 

      Wang, Hui; Magnain, Caroline; Wang, Ruopeng; Dubb, Jay; Varjabedian, Ani; Tirrell, Lee; Stevens, Allison; Augustinack, Jean; Konukoglu, Ender; Aganj, Iman; Frosch, Matthew; Schmahmann, Jeremy; Fischl, Bruce; Boas, David (Elsevier BV, 2018-01)
      Polarization sensitive optical coherence tomography (PSOCT) with serial sectioning has enabled the investigation of 3D structures in mouse and human brain tissue samples. By using intrinsic optical properties of back-scattering ...

    • Automatic Verification of the Gradient Table in Diffusion-Weighted MRI Based on Fiber Continuity 

      Aganj, Iman (Springer Science and Business Media LLC, 2018-11-08)
      In diffusion-weighted magnetic resonance imaging (dMRI), the coordinate systems where the image and the diffusion gradients are represented may be inconsistent, thus impacting the quality of subsequent fiber tracking and ...

    • Avoiding Symmetry-Breaking Spatial Non-Uniformity in Deformable Image Registration via a Quasi-Volume-Preserving Constraint 

      Aganj, Iman; Reuter, Martin; Sabuncu, Mert R.; Fischl, Bruce (Elsevier BV, 2015-02-01)
      The choice of a reference image typically influences the results of deformable image registration, thereby making it asymmetric. This is a consequence of a spatially non-uniform weighting in the cost function integral that ...

    • Evaluation of Denoising Algorithms for Biological Electron Tomography 

      Narasimha, Rajesh; Aganj, Iman; Bennett, Adam E.; Borgnia, Mario J.; Zabransky, Daniel; Sapiro, Guillermo; McLaughlin, Steven W.; Milne, Jacqueline L.S.; Subramaniam, Sriram (Elsevier BV, 2008-10)
      Tomograms of biological specimens derived using transmission electron microscopy can be intrinsically noisy due to the use of low electron doses, the presence of a “missing wedge” in most data collection schemes, and ...

    • Motion Detection in Diffusion MRI via Online ODF Estimation 

      Caruyer, Emmanuel; Aganj, Iman; Lenglet, Christophe; Sapiro, Guillermo; Deriche, Rachid (Hindawi Publishing Corporation, 2013)
      The acquisition of high angular resolution diffusion MRI is particularly long and subject motion can become an issue. The orientation distribution function (ODF) can be reconstructed online incrementally from diffusion-weighted ...

    • Multimodal Image Registration Through Simultaneous Segmentation 

      Aganj, Iman; Fischl, Bruce (IEEE, 2017-11)
      Multimodal image registration facilitates the combination of complementary information from images acquired with different modalities. Most existing methods require computation of the joint histogram of the images, while ...

    • Unsupervised Medical Image Segmentation Based on the Local Center of Mass 

      Aganj, Iman; Harisinghani, Mukesh; Weissleder, Ralph; Fischl, Bruce (Springer Science and Business Media LLC, 2018-08-29)
      Image segmentation is a critical step in numerous medical imaging studies, which can be facilitated by automatic computational techniques. Supervised methods, although highly effective, require large training datasets of ...