Abstract:
:Background: Early imaging-based treatment response assessment of brain metastases following stereotactic radiosurgery (SRS) remains challenging. The aim of this study is to determine whether early (within 12 weeks) intratumoral changes in interstitial fluid pressure (IFP) and velocity (IFV) estimated from computational fluid modeling (CFM) using dynamic contrast-enhanced (DCE) MRI can predict long-term outcomes of lung cancer brain metastases (LCBMs) treated with SRS. Methods: Pre- and post-treatment T1-weighted DCE-MRI data were obtained in 41 patients treated with SRS for intact LCBMs. The imaging response was assessed using RANO-BM criteria. For each lesion, extravasation of contrast agent measured from Extended Tofts pharmacokinetic Model (volume transfer constant, Ktrans) was incorporated into a computational fluid model to estimate tumor IFP and IFV. Estimates of mean IFP and IFV and heterogeneity (skewness and kurtosis) were calculated for each lesion from pre- and post-SRS imaging. The Wilcoxon rank-sum test was utilized to assess for significant differences in IFP, IFV, and IFP/IFV change (Δ) between response groups. Results: Fifty-three lesions from 41 patients were included. Median follow-up time after SRS was 11 months. The objective response (OR) rate (partial or complete response) was 79%, with 21% demonstrating stable disease (SD) or progressive disease (PD). There were significant response group differences for multiple posttreatment and Δ CFM parameters: post-SRS IFP skewness (mean -0.405 vs. -0.691, p = 0.022), IFP kurtosis (mean 2.88 vs. 3.51, p = 0.024), and IFV mean (5.75e-09 vs. 4.19e-09 m/s, p = 0.027); and Δ IFP kurtosis (mean -2.26 vs. -0.0156, p = 0.017) and IFV mean (1.91e-09 vs. 2.38e-10 m/s, p = 0.013). Posttreatment and Δ thresholds predicted non-OR with high sensitivity (sens): post-SRS IFP skewness (-0.432, sens 84%), kurtosis (2.89, sens 84%), and IFV mean (4.93e-09 m/s, sens 79%); and Δ IFP kurtosis (-0.469, sens 74%) and IFV mean (9.90e-10 m/s, sens 74%). Conclusions: Objective response was associated with lower post-treatment tumor heterogeneity, as represented by reductions in IFP skewness and kurtosis. These results suggest that early post-treatment assessment of IFP and IFV can be used to predict long-term response of lung cancer brain metastases to SRS, allowing a timelier treatment modification.
journal_name
Front Neuroljournal_title
Frontiers in neurologyauthors
Swinburne N,LoCastro E,Paudyal R,Oh JH,Taunk NK,Shah A,Beal K,Vachha B,Young RJ,Holodny AI,Shukla-Dave A,Hatzoglou Vdoi
10.3389/fneur.2020.00402subject
Has Abstractpub_date
2020-05-28 00:00:00pages
402issn
1664-2295journal_volume
11pub_type
杂志文章abstract::Introduction: Novel therapies are needed for the treatment of motion sickness given the inadequate relief and bothersome and dangerous adverse effects of currently approved therapies. Neurokinin-1 (NK1) receptor antagonists have the potential to be effective in improving the symptoms of motion sickness, given the invo...
journal_title:Frontiers in neurology
pub_type:
doi:10.3389/fneur.2020.563373
更新日期:2020-09-29 00:00:00
abstract::Background: The causal relationship between serum lipid levels and the risk of Parkinson's disease (PD) remains largely uncertain. We summarized the existing controversial evidence on this topic. Methods: We searched the electronic databases for observational studies from January 1988 to March 2020. We applied random-...
journal_title:Frontiers in neurology
pub_type:
doi:10.3389/fneur.2020.00597
更新日期:2020-06-26 00:00:00
abstract::Background: Non-invasive brain-computer interfaces (BCI) represent an emerging technology for enabling persons with impaired or lost grasping and reaching functions due to high spinal cord injury (SCI) to control assistive devices. A major drawback of BCIs is a high rate of false classifications. The robustness and pe...
journal_title:Frontiers in neurology
pub_type: 杂志文章
doi:10.3389/fneur.2018.01192
更新日期:2019-01-31 00:00:00
abstract::Object: Diabetes is associated with cerebral vascular dysfunction and increased vascular cognitive impairment. The objective of this study was to use arterial spin labeling (ASL) perfusion-weighted magnetic resonance imaging to investigate whether cerebral perfusion was changed in newly-diagnosed children with type 1 ...
journal_title:Frontiers in neurology
pub_type: 杂志文章
doi:10.3389/fneur.2020.00572
更新日期:2020-06-19 00:00:00
abstract::The corticospinal system is a major motor pathway in the control of skilled voluntary movements such as reaching and grasping. It has developed considerably phylogenetically to reach a peak in humans. Because rodents possess advanced forelimb movements that can be used for reaching and grasping food, it is commonly co...
journal_title:Frontiers in neurology
pub_type: 杂志文章
doi:10.3389/fneur.2014.00103
更新日期:2014-06-20 00:00:00
abstract::Purpose: We are aiming to build a supervised machine learning-based classifier, in order to preoperatively distinguish focal cortical dysplasia (FCD) from glioneuronal tumors (GNTs) in patients with epilepsy. Methods: This retrospective study was comprised of 96 patients who underwent epilepsy surgery, with the final ...
journal_title:Frontiers in neurology
pub_type: 杂志文章
doi:10.3389/fneur.2020.548305
更新日期:2020-11-24 00:00:00
abstract::Myasthenia gravis (MG) is the most common autoimmune disorder affecting the neuromuscular junction, characterized by skeletal muscle weakness and fatigability. It is caused by autoantibodies targeting proteins of the neuromuscular junction; ~85% of MG patients have autoantibodies against the muscle acetylcholine recep...
journal_title:Frontiers in neurology
pub_type: 杂志文章,评审
doi:10.3389/fneur.2020.596981
更新日期:2020-11-30 00:00:00
abstract::Studies of traumatic brain injury from all causes have found evidence of chronic hypopituitarism, defined by deficient production of one or more pituitary hormones at least 1 year after injury, in 25-50% of cases. Most studies found the occurrence of posttraumatic hypopituitarism (PTHP) to be unrelated to injury sever...
journal_title:Frontiers in neurology
pub_type: 杂志文章
doi:10.3389/fneur.2012.00011
更新日期:2012-02-07 00:00:00
abstract::Given the increasing use of regenerative free muscle flaps for various reconstructive procedures and neuroprosthetic applications, there is great interest and value in their enhanced regeneration, revascularization, and reinnervation for improved functional recovery. Here, we implant polyimide-based mircroelectrodes o...
journal_title:Frontiers in neurology
pub_type: 杂志文章
doi:10.3389/fneur.2019.00252
更新日期:2019-03-22 00:00:00
abstract::Background and Purpose: Internal carotid artery stenosis (ICAS)≥70% is a leading cause of ischemic cerebrovascular events (ICVEs). However, a considerable percentage of stroke survivors with symptomatic ICAS (sICAS) have <70% stenosis with a vulnerable plaque. Whether the length of ICAS is associated with high risk of...
journal_title:Frontiers in neurology
pub_type: 杂志文章
doi:10.3389/fneur.2019.00317
更新日期:2019-04-09 00:00:00
abstract::Background and Purpose: The effect of uric acid (UA) levels on severity and prognosis of spontaneous intracerebral hemorrhage (ICH) remains controversial. We aimed to explore the association of admission UA levels with stroke severity and outcomes in ICH patients. Materials and Methods: The patients enrolled in this s...
journal_title:Frontiers in neurology
pub_type: 杂志文章
doi:10.3389/fneur.2020.609938
更新日期:2020-12-03 00:00:00
abstract:BACKGROUND:Hypertension (HTN) is the most common cause of spontaneous intracerebral hemorrhage (ICH). The aim of this study is to investigate the role of resistant HTN in patients with ICH. METHODS AND RESULTS:We conducted a retrospective study of all consecutive ICH admissions at our medical center from November 2013...
journal_title:Frontiers in neurology
pub_type: 杂志文章
doi:10.3389/fneur.2017.00184
更新日期:2017-05-03 00:00:00
abstract::Mutations of the voltage-gated sodium channel SCN8A have been identified in approximately 1% of nearly 1,500 children with early-infantile epileptic encephalopathies (EIEE) who have been tested by DNA sequencing. EIEE caused by mutation of SCN8A is designated EIEE13 (OMIM #614558). Affected children have seizure onset...
journal_title:Frontiers in neurology
pub_type: 杂志文章,评审
doi:10.3389/fneur.2015.00104
更新日期:2015-05-15 00:00:00
abstract::Tau accumulation is a prominent feature in a variety of neurodegenerative disorders and remarkable effort has been expended working out the biochemistry and cell biology of this cytoplasmic protein. Tau's wayward properties may derive from germline mutations in the case of frontotemporal lobar degeneration (FTLD-MAPT)...
journal_title:Frontiers in neurology
pub_type: 杂志文章,评审
doi:10.3389/fneur.2020.590199
更新日期:2020-11-12 00:00:00
abstract::Despite extensive research, the functions of the basal ganglia (BG) in movement control have not been fully understood. Eye movements, particularly saccades, are convenient indicators of BG function. Here, we review the main oculomotor findings reported in Parkinson's disease (PD) and genetic parkinsonian syndromes. P...
journal_title:Frontiers in neurology
pub_type: 杂志文章,评审
doi:10.3389/fneur.2017.00592
更新日期:2017-11-09 00:00:00
abstract::Most clinical diagnoses of stroke are based on the persistence of symptoms relating to consciousness, language, visual-field loss, extraocular movement, neglect (visual), motor strength, and sensory loss following acute cerebral infarction. Yet despite the fact that most motor actions and cognition are driven by visio...
journal_title:Frontiers in neurology
pub_type:
doi:10.3389/fneur.2020.00705
更新日期:2020-07-17 00:00:00
abstract::Qualitative clinical assessments of the recovery of awareness after severe brain injury require an assessor to differentiate purposeful behavior from spontaneous behavior. As many such behaviors are minimal and inconsistent, behavioral assessments are susceptible to diagnostic errors. Advanced neuroimaging tools can b...
journal_title:Frontiers in neurology
pub_type: 杂志文章,评审
doi:10.3389/fneur.2018.00350
更新日期:2018-05-22 00:00:00
abstract::Ankylosing spondylitis (AS) mainly affects the axial skeleton and is an important factor leading to chronic lower back pain in young individuals. However, few studies have explored alterations of brain gray matter volume in AS patients. The purpose of the present study was to describe brain gray matter abnormalities a...
journal_title:Frontiers in neurology
pub_type: 杂志文章
doi:10.3389/fneur.2020.607646
更新日期:2020-11-30 00:00:00
abstract::This study aims to quantify passive muscle stiffness of spastic wrist flexors in stroke survivors using shear wave elastography (SWE) and to correlate with neural and non-neural contributors estimated from a biomechanical model to hyper-resistance measured during passive wrist extension. Fifteen hemiplegic individuals...
journal_title:Frontiers in neurology
pub_type: 杂志文章
doi:10.3389/fneur.2019.00736
更新日期:2019-07-10 00:00:00
abstract::During neurorehabilitation, clinical measurements are widely adopted to evaluate behavioral improvements after treatment. However, it is not able to identify or monitor the change of central nervous system (CNS) of each individual patient. Resting-state functional magnetic resonance imaging (rs-fMRI) has been widely u...
journal_title:Frontiers in neurology
pub_type: 杂志文章
doi:10.3389/fneur.2019.01105
更新日期:2019-11-01 00:00:00
abstract::Annual cycles of physiology and behavior are highly prevalent in organisms inhabiting temperate and polar regions. Examples in mammals include changes in appetite and body fat composition, hibernation and torpor, growth of antlers, pelage and horns, and seasonal reproduction. The timing of these seasonal cycles reflec...
journal_title:Frontiers in neurology
pub_type: 杂志文章,评审
doi:10.3389/fneur.2017.00079
更新日期:2017-03-10 00:00:00
abstract::Objective: Status epilepticus is a major emergency condition. The choice of antiepileptic drugs for second-line treatment after benzodiazepine remains controversial, including levetiracetam vs. fosphenytoin. We compare the safety of intravenous levetiracetam and fosphenytoin as a second-line treatment in patients with...
journal_title:Frontiers in neurology
pub_type: 杂志文章
doi:10.3389/fneur.2020.00615
更新日期:2020-07-02 00:00:00
abstract::Stroke is becoming one of the leading causes of adult disability and death in sub-Saharan African countries. The aim of the present study is to provide an up-to-date account of the clinical and demographic characteristics of patients with stroke admitted to the University of Gondar College of Medicine and Health Scien...
journal_title:Frontiers in neurology
pub_type: 杂志文章
doi:10.3389/fneur.2020.00428
更新日期:2020-05-19 00:00:00
abstract::Traumatic brain injury (TBI) is a major medical crisis without any FDA-approved pharmacological therapies that have been demonstrated to improve functional outcomes. It has been argued that discovery of disease-relevant biomarkers might help to guide successful clinical trials for TBI. Major advances in mass spectrome...
journal_title:Frontiers in neurology
pub_type: 杂志文章
doi:10.3389/fneur.2013.00061
更新日期:2013-05-31 00:00:00
abstract::Hearing and balance impairment are the most frequently reported features of infratentorial (classical) superficial siderosis (iSS). There are few comprehensive descriptions of audiovestibular function in iSS and therefore limited understanding of the affected segment(s) of the audiovestibular pathway. In addition, mon...
journal_title:Frontiers in neurology
pub_type:
doi:10.3389/fneur.2020.610819
更新日期:2021-01-14 00:00:00
abstract::This study was undertaken to demonstrate the vascular protection of exogenous and endogenous hydrogen sulfide (H2S) on cerebral ischemia/reperfusion (I/R) injury. The effect of H2S on cerebrovascular dysfunction in middle cerebral artery (MCA) and neuronal damage were measured after cerebral I/R induced by transient m...
journal_title:Frontiers in neurology
pub_type: 杂志文章
doi:10.3389/fneur.2018.00779
更新日期:2018-10-19 00:00:00
abstract::Therapeutic hypothermia (HT) is a currently accepted treatment for neonatal asphyxia and is a promising strategy in adult stroke therapy. We previously reported that acute administration of docosahexaenoic acid (DHA) triglyceride emulsion (tri-DHA) protects against hypoxic-ischemic (HI) injury in neonatal mice. We que...
journal_title:Frontiers in neurology
pub_type: 杂志文章
doi:10.3389/fneur.2020.618419
更新日期:2021-01-15 00:00:00
abstract::Aims: To examine trajectories of employment probability up to 10 years following moderate-to-severe traumatic brain injury (TBI) and identify significant predictors from baseline socio-demographic and injury characteristics. Methods: A longitudinal observational study followed 97 individuals with moderate-to-severe TB...
journal_title:Frontiers in neurology
pub_type: 杂志文章
doi:10.3389/fneur.2018.01051
更新日期:2018-12-05 00:00:00
abstract::Dizziness and imbalance are clinically poorly defined terms, which affect ~30% of people over 65 years of age. In these people, it is often difficult to define the primary cause of dizziness, as it can stem from cardiovascular, vestibular, psychological, and neuromuscular causes. However, identification of the primary...
journal_title:Frontiers in neurology
pub_type: 杂志文章
doi:10.3389/fneur.2015.00268
更新日期:2015-12-24 00:00:00
abstract::Current efficacious treatments for traumatic brain injury (TBI) are lacking. Establishment of a protective gut microbiota population offers a compelling therapeutic avenue, as brain injury induces disruptions in the composition of the gut microbiota, i.e., gut dysbiosis, which has been shown to contribute to TBI-relat...
journal_title:Frontiers in neurology
pub_type: 杂志文章,评审
doi:10.3389/fneur.2019.00875
更新日期:2019-08-16 00:00:00