Psychosocial, Behavioral, and Radiologic Changes Following Radiosurgery for Benign Neurologic Disease

  • End date
    Aug 25, 2025
  • participants needed
  • sponsor
    Vanderbilt University Medical Center
Updated on 11 May 2022
depressed mood
depression screening


A number of studies from the literature suggest important behavioral, psychosocial, or radiologic changes occur following significant neurologic events or interventions such as stroke, neurosurgery, medications, radiation, systemic therapy, or injury. The purpose of this study is to describe these changes with advanced neurologic imaging and targeted neurologic and neuropsychiatric assessments. This is a non-interventional observational study of minimal risk to participants as there is no medical intervention. The results of this study will be used to inform patients, scientists, and society in the development of future treatments.


Functional magnetic resonance imaging (fMRI) and diffusion tensor tractography (DTI) have rapidly expanded since its emergence two decades ago. fMRI is well established as the single most powerful method for detecting changes in neural activity in vivo, albeit indirectly by detection of changes in blood oxygenation level dependent (BOLD) signals that reflect hemodynamic changes subsequent to neural activity. A conventional fMRI experiment involves the comparison of two or more brain states followed by statistical tests to identify which brain regions were involved in a particular task. The identification of patterns of highly correlated low-frequency MRI signals in the resting brain provides a powerful approach to delineate and describe neural circuits, and an unprecedented ability to assess the manner in which distributed regions work together to achieve specific functions. Since the first reports of temporal correlations in BOLD baseline signals, several distinct cortical long-range networks have been identified and characterized in the resting state, including a default mode network. Moreover, observations of altered resting state connectivity in several disorders and as a function of behavior or cognitive skills suggest these correlations reflect an important level of brain organization and may play a fundamental role in the execution and maintenance of various brain functions. DTI is also an exceedingly important imaging modality that has elucidated the neural connectivity inherent between various cortical and subcortical structures. DTI is routinely used and has enhanced our understanding of functional connections between various parts of the brain. Prior to interventions, DTI is commonly obtained, so that interventionists can avoid critical circuitry. There is suggestion that both fMRI and DTI imaging is influenced by organic or interventional variables, however this is understudied. The neuroscientists and clinicians would greatly value information that would expand our working knowledge of the basic neural substrates and functional neural changes that occur in patients organically or after interventions. A non-invasive, non-interventional, observational study is needed to show the changes that happen to patients organically or in standard of care settings. A greater working understanding of the neural connectivity and changes that happen in the brain is of great future benefit to patients, science, and society as well as future therapeutic development such as post-stroke care, rehabilitation, post-traumatic brain injury, or post-treatment care in the brain that has previously been influenced by intervention or disease.

Condition Obsessive-Compulsive Disorder, Pain, Intractable, Depression
Treatment fMRI and DTI, Behavioral questionnaires, Disease-Specific Patient-Reported Outcomes, Behavioral tests, Behavioral tests
Clinical Study IdentifierNCT04688554
SponsorVanderbilt University Medical Center
Last Modified on11 May 2022


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Inclusion Criteria

Age ≥ 18 years old and willing and able to sign a written informed consent
Eligible for Brain MRI
History of neurologic event or intervention OR future planned neurologic intervention

Exclusion Criteria

Contraindications to MRI of the brain
Patient declining participation in study
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If you are confirmed eligible after full screening, you will be required to understand and sign the informed consent if you decide to enroll in the study. Once enrolled you may be asked to make scheduled visits over a period of time.

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Complete your scheduled study participation activities and then you are done. You may receive summary of study results if provided by the sponsor.

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