Browsing Harvard Medical School by Keyword "anisotropy"

Now showing items 1-5 of 5

    • Age-related decline in white matter tract integrity and cognitive performance: A DTI tractography and structural equation modeling study 

      Voineskos, Aristotle N.; Rajji, Tarek K.; Lobaugh, Nancy J.; Miranda, Dielle; Shenton, Martha Elizabeth; Kennedy, James L.; Pollock, Bruce G.; Mulsant, Benoit H. (Elsevier BV, 2012)
      Age-related decline in microstructural integrity of certain white matter tracts may explain cognitive decline associated with normal aging. Whole brain tractography and a clustering segmentation in 48 healthy individuals ...

    • Cingulate fasciculus integrity disruption in schizophrenia: a magnetic resonance diffusion tensor imaging study 

      Kubicki, Marek R.; Westin, Carl-Fredrik; Nestor, Paul Gerard; Wible, Cynthia Gayle; Frumin, Melissa; Maier, Stephan Ernst; Kikinis, Ron; Jolesz, Ferenc A.; McCarley, Robert William; Shenton, Martha Elizabeth (Elsevier BV, 2003)
      Background: Evidence suggests that a disruption in limbic system network integrity and, in particular, the cingulate gyrus (CG), may play a role in the pathophysiology of schizophrenia; however, the cingulum bundle (CB), ...

    • Comparison of Single-Shot Echo-Planar and Line Scan Protocols for Diffusion Tensor Imaging 

      Kubicki, Marek R.; Maier, Stephan Ernst; Westin, Carl-Fredrik; Mamata, Hatsuho; Ersner-Hershfield, Hal; Estepar, Raul; Kikinis, Ron; Jolesz, Ferenc A.; McCarley, Robert William; Shenton, Martha Elizabeth (Elsevier, 2004)
      Rationale and Objectives: Both single-shot diffusion-weighted echo-planar imaging (EPI) and line scan diffusion imaging (LSDI) can be used to obtain magnetic resonance diffusion tensor data and to calculate directionally ...

    • The effect of subacute denervation on the electrical anisotropy of skeletal muscle: Implications for clinical diagnostic testing 

      Ahad, Mohammad A.; Narayanaswami, Pushpa; Kasselman, Lora J.; Rutkove, Seward Brian (Elsevier BV, 2010)
      Objective Applied electrical current flows preferentially along rather than across muscle fibers, a characteristic called anisotropy. In this study, we investigate the alteration in muscle anisotropy after denervation ...

    • Fornix Integrity and Hippocampal Volume in Male Schizophrenic Patients 

      Kuroki, Noriomi; Kubicki, Marek R.; Nestor, Paul Gerard; Salisbury, Dean F.; Park, Hae-Jeong; Levitt, James Jonathan; Woolston, Sophie; Frumin, Melissa; Niznikiewicz, Margaret A.; Westin, Carl-Fredrik; Maier, Stephan Ernst; McCarley, Robert William; Shenton, Martha Elizabeth (Elsevier BV, 2006)
      Background: The hippocampus has been shown to be abnormal in schizophrenia. The fornix is one of the main fiber tracts connecting the hippocampus with other brain regions. Few studies have evaluated the fornix in schizophrenia, ...