Spectrum of single and multiple corona radiata infarcts: Clinical/MRI correlations

Kumral, Emre; Bayülkem, Gamze

doi:10.1053/jscd.2003.11

Cited by 12 publications

(7 citation statements)

References 23 publications

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“…The two subjects with joint position sense deficits presented a lesion which can generate proprioceptive impairments: S2 had a lacunar stroke with a lesion in the left corona radiata, while S4 had a subcortical stroke involving the right basal ganglia. Corona radiata infarcts have a wide clinical spectrum including incomplete motor and sensory loss [ 46 ], and causing sensory disturbances localized to the limbs [ 47 ], which also affect proprioception [ 48 ]. Basal ganglia are specifically involved in the control of movement amplitude [ 49 ], with lesions in this area leading to proprioceptive dysfunction [ 50 , 51 ].…”

Section: Discussionmentioning

confidence: 99%

Proprioceptive assessment in clinical settings: Evaluation of joint position sense in upper limb post-stroke using a robotic manipulator

et al. 2017

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Proprioception is a critical component for motor functions and directly affects motor learning after neurological injuries. Conventional methods for its assessment are generally ordinal in nature and hence lack sensitivity. Robotic devices designed to promote sensorimotor learning can potentially provide quantitative precise, accurate, and reliable assessments of sensory impairments. In this paper, we investigate the clinical applicability and validity of using a planar 2 degrees of freedom robot to quantitatively assess proprioceptive deficits in post-stroke participants. Nine stroke survivors and nine healthy subjects participated in the study. Participants’ hand was passively moved to the target position guided by the H-Man robot (Criterion movement) and were asked to indicate during a second passive movement towards the same target (Matching movement) when they felt that they matched the target position. The assessment was carried out on a planar surface for movements in the forward and oblique directions in the contralateral and ipsilateral sides of the tested arm. The matching performance was evaluated in terms of error magnitude (absolute and signed) and its variability. Stroke patients showed higher variability in the estimation of the target position compared to the healthy participants. Further, an effect of target was found, with lower absolute errors in the contralateral side. Pairwise comparison between individual stroke participant and control participants showed significant proprioceptive deficits in two patients. The proposed assessment of passive joint position sense was inherently simple and all participants, regardless of motor impairment level, could complete it in less than 10 minutes. Therefore, the method can potentially be carried out to detect changes in proprioceptive deficits in clinical settings.

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Section: Discussionmentioning

confidence: 99%

Proprioceptive assessment in clinical settings: Evaluation of joint position sense in upper limb post-stroke using a robotic manipulator

et al. 2017

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“…Our patient did not improve after 5 days of DKA treatment, suggesting there might be other causes of her coma and lack of consciousness. Therefore, the acute left-sided corona radiata infarction shown in the initial brain CT was considered as a possible cause, but the neurological signs were symmetrical and involved both sensory and motor functions which were not consistent with the diagnosis of a left-sided unilateral corona radiata infarction [10]. Our radiologist thought that the brain MRI showed typical findings of neurocysticercosis which was possibly in the viable phase of disease progression on admission.…”

Section: Discussionmentioning

confidence: 77%

Differential diagnosis of atypical encephalopathy in critical care: a case report

Peng

Chang

et al. 2020

BMC Infect Dis

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Background A lower level of consciousness is a common presentation in critical care, with many different causes and contributory factors, of which more than one may be present concurrently. Case presentation We described a woman with poorly controlled diabetes and steroid-dependent asthma who presented in a deep coma. She was found to have Streptococcus intermedius bacteremia and pyogenic ventriculitis that originated from right middle lobe pneumonia. Also, multiple small parenchymal lesions were observed on brain magnetic resonance imaging and increased protein concentration was noted in cerebral spinal fluid. Initially, her coma was thought to be due to diabetic ketoacidosis and septic encephalopathy. However, her lowered level of consciousness was disproportionate to either diabetic ketoacidosis or septic encephalopathy, and her clinical course was not as expected for these two conditions. Treatment with antibiotic, corticosteroid and antihelminthic drugs was administered resulting in improving consciousness. The Streptococcus intermedius pneumonia progressed to form a large cavity that needed an early surgical lobectomy and resulted in the unexpected diagnosis of chronic cavitary pulmonary aspergillosus. Conclusions In critical care, a lowered level of consciousness may have many etiologies, and critical care clinicians should be familiar with the signs and symptoms of all possible causes to enable prompt diagnosis and appropriate treatment.

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“…For the corticospinal tracts, these descending fibers mainly originate from motor and sensory cortices and continue on through the corona radiata and internal capsule, then enter midbrain through the cerebral peduncle and pass through the medulla to the spinal cord (Siegel and Sapru, 2011 ). White matter changes in the corona radiata, internal capsule, medial lemniscus and cerebral peduncle may result in impairment of proprioception (Jang and Kwon, 2016 ; Cho and Lee, 2017 ), reduced sense of discriminative touch (Cerrato et al, 2000 ), or sensorimotor deficits (Kumral and Bayülkem, 2003 ), which have been found in smartphone addicts (Lee and Seo, 2014 ) and people with other dependent behaviors (Blanco-Hinojo et al, 2017 ; Weinstein et al, 2017 ).…”

Section: Discussionmentioning

confidence: 99%

Alterations in White Matter Integrity in Young Adults with Smartphone Dependence

Long

Lyu

et al. 2017

Front. Hum. Neurosci.

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Smartphone dependence (SPD) is increasingly regarded as a psychological problem, however, the underlying neural substrates of SPD is still not clear. High resolution magnetic resonance imaging provides a useful tool to help understand and manage the disorder. In this study, a tract-based spatial statistics (TBSS) analysis on diffusion tensor imaging (DTI) was used to measure white matter integrity in young adults with SPD. A total of 49 subjects were recruited and categorized into SPD and control group based on their clinical behavioral tests. To localize regions with abnormal white matter integrity in SPD, the voxel-wise analysis of fractional anisotropy (FA) and mean diffusivity (MD) on the whole brain was performed by TBSS. The correlation between the quantitative variables of brain structures and the behavior measures were performed. Our result demonstrated that SPD had significantly lower white matter integrity than controls in superior longitudinal fasciculus (SLF), superior corona radiata (SCR), internal capsule, external capsule, sagittal stratum, fornix/stria terminalis and midbrain structures. Correlation analysis showed that the observed abnormalities in internal capsule and stria terminalis were correlated with the severity of dependence and behavioral assessments. Our finding facilitated a primary understanding of white matter characteristics in SPD and indicated that the structural deficits might link to behavioral impairments.

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Spectrum of single and multiple corona radiata infarcts: Clinical/MRI correlations

Cited by 12 publications

References 23 publications

Proprioceptive assessment in clinical settings: Evaluation of joint position sense in upper limb post-stroke using a robotic manipulator

Proprioceptive assessment in clinical settings: Evaluation of joint position sense in upper limb post-stroke using a robotic manipulator

Differential diagnosis of atypical encephalopathy in critical care: a case report

Alterations in White Matter Integrity in Young Adults with Smartphone Dependence

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