World Neurosurg
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Traditional Gamma Knife radiosurgery (GKRS) of brain arteriovenous malformations (AVMs) using digital subtraction angiography (DSA) requires head immobilization using a stereotactic frame. ⋯ This is the first study that integrates DSA in the treatment planning of brain AVMs using GKRS without utilizing a stereotactic head frame. Frameless GKRS provides numerous advantages over frame-based techniques including improved patient experience and the capability of fractionation and thus expanding the eligibility of more AVMs for radiosurgery, while maintaining high spatial resolution of the AVM using angiography data.
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Owing to the complexities of brain metastases (BMs), accurate and reliable prognostic and predictive factors remain critical roadblocks in patients with lung adenocarcinoma (LUAD) BMs who undergo stereotactic radiosurgery (SRS). ⋯ Collectively, iBMV and Rvol are highly related to OS and could be used as potential prognostic indices in patients with LUAD BMs who underwent SRS. Furthermore, we also revealed that the KPS and BM contrast enhancement could be potential indices of PFS in LUAD BMs.
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The use of thoracic pedicle screws (TPSs) during scoliosis surgery entails an inherent risk of neurological deficit. Triggered electromyography (t-EMG) is an accurate neuromonitoring test for detection of malpositioned TPSs. However, single-pulse (SP) t-EMG stimulation has shown variable capability for detecting medial pedicle breaches, while pulse-train (PT) t-EMG could be more accurate. The aim of this study was to analyze the correlation between SP t-EMG and PT t-EMG. ⋯ SP t-EMG and PT t-EMG stimulation techniques had similar results when the stimuli were applied to TPSs, but PT t-EMG may have better efficacy in low-threshold group.
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Shunting is an established treatment for hydrocephalus, yet reports on shunt outcomes for nonbacterial infection (NBI) hydrocephalus are limited. Furthermore, comparison of mechanisms and rates of failure for shunted NBI hydrocephalus versus more typical etiologies remains undetermined. ⋯ Shunts placed for hydrocephalus secondary to nonbacterial infections are complicated by significantly higher rates of malfunction. These patients are prone to develop distal abdominal pseudocysts and often require revision to low-resistance systems.
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Soft tissue cervical spine injury (CSI) has the possibility of causing cervical segmental instability, which can lead to spinal cord injury. There is a lack of certainty in assessing whether soft tissue CSI is unstable or not. This biomechanical study aimed to investigate the risk factors of soft tissue CSI. ⋯ In CSI, all soft tissues have a key role in stabilizing cervical spine, but ID is the most important component of all.