This paper presents a novel augmented reality(AR)-based neurosurgical training simulator which provides a very natural way for surgeons to learn neurosurgical skills.Surgical simulation with bimanual haptic interactio...This paper presents a novel augmented reality(AR)-based neurosurgical training simulator which provides a very natural way for surgeons to learn neurosurgical skills.Surgical simulation with bimanual haptic interaction is integrated in this work to provide a simulated environment for users to achieve holographic guidance for pre-operative training.To achieve the AR guidance,the simulator should precisely overlay the 3D anatomical information of the hidden target organs in the patients in real surgery.In this regard,the patient-specific anatomy structures are reconstructed from segmented brain magnetic resonance imaging.We propose a registration method for precise mapping of the virtual and real information.In addition,the simulator provides bimanual haptic interaction in a holographic environment to mimic real brain tumor resection.In this study,we conduct AR-based guidance validation and a user study on the developed simulator,which demonstrate the high accuracy of our AR-based neurosurgery simulator,as well as the AR guidance mode’s potential to improve neurosurgery by simplifying the operation,reducing the difficulty of the operation,shortening the operation time,and increasing the precision of the operation.展开更多
Objective: This study sought to identify the prevalence of operations for spinal epidural neoplastic metastases relative to other spine and neurosurgical operative procedures. Methods: This study was descriptive and i...Objective: This study sought to identify the prevalence of operations for spinal epidural neoplastic metastases relative to other spine and neurosurgical operative procedures. Methods: This study was descriptive and involved a retrospective review of data collected from patients who underwent neurosurgeries between February 1997 and January 2015 at a single quaternary hospital. The examined population was distributed across five descriptive categories to perform numerical distributions among neurosurgical operative procedures. Results: A total of 12,802 neurosurgical procedures were identified. These procedures were classified as follows: Skull and brain, 11,192 (87.42%);spinal column and spinal nervous tissue, 1462 (11.42%);and peripheral nerves, 148 (1.16%). Surgical procedures for the 1462 (100%) cases of spinal column and spinal nervous tissue diseases were distributed by nosology as follows: Degenerative intervertebral disk and spondylosis, 768 (52.54%);neoplastic, 279 (19.08%);traumatic, 221 (15.11%);congenital, 163 (11.14%);infectious and inflammatory, 27 (1.85%);and vascular, 4 (0.28%). With respect to the distribution of the 279 (100%) surgical procedures for spinal column and spinal nervous tissue neoplastic diseases, 124 (44.44%) procedures were for intradural neoplasms, and 155 (55.56%) procedures were for epidural spinal column neoplasms. The 155 (100%) operations for epidural neoplastic diseases were distributed into two groups: Primary epidural neoplasms, 42 (27.10%);and secondary epidural neoplasms, 113 (72.90%). Spinal column epidural neoplastic metastases (secondary neoplasms) represented 0.88% of the 12,802 neurosurgical procedures. Conclusions: Surgical procedures for spinal metastasis are uncommon with respect to all neurosurgical operative procedures. Trend analysis reveals an unchanging trend of prevalence for these procedures.展开更多
The fornix, which is involved in transfer of episodic memory, is an important structure of the Papez circuit between the medial diencephalon and the medial temporal lobe. Many studies using DTI have reported on injury...The fornix, which is involved in transfer of episodic memory, is an important structure of the Papez circuit between the medial diencephalon and the medial temporal lobe. Many studies using DTI have reported on injury of the fornix in patients with brain injury （Nakayama et al., 2006; Sugiyama et al., 2007; Wang et al., 2008; Chang et al., 2010）. However, only a few studies on recov- ery of an injured fornix in patients with brain injury, including traumatic brain injury and stroke, have been reported （Yeo et al., 2011; Yeo and Jang, 2013a, b）. In this study, using follow up DTT images, we reported on a patient who showed recovery of injured fornical crura following a neurosurgical operation for a brain tumor.展开更多
Background: Maintenance of normal fluid homeostasis is challenging in neurosurgical patients. Consequently, we studied hydration assessment in neurosurgical intensive care patients. Methods: Pulmonary artery catheter ...Background: Maintenance of normal fluid homeostasis is challenging in neurosurgical patients. Consequently, we studied hydration assessment in neurosurgical intensive care patients. Methods: Pulmonary artery catheter thermodilution (PACTD) is the conventional method for measuring cardiac index (CI) and mean pulmonary artery occlusion (MPAOP) or wedge pressure (MPWP). We compared values from this technique with those derived from continuous cardiac dynamic monitoring (CCDM)-HeartSmart?, a new, less invasive, software-based technique. Over 4 years, we undertook an audit of 101 paired sets of data from 21 patients with sub-arachnoid hemorrhage who had pulmonary artery flotation catheters inserted as part of their treatment. Measured values of CI and MPWP were obtained retrospectively from patients’ charts and compared with values calculated using CCDM-HeartSmart? software. Results: Using the Bland-Altman method for comparing two measurement techniques, there was good agreement between measured and calculated MPWP (mean of differences –1.81, SD 3.97, SE 0.39, 95% CI –2.59 to 2.04 l/min/m2;two-sided p 2). This indicates that, when estimating CI and MPWP in critically ill neurosurgical patients, CCDM-HeartSmart? provides values close to those generated using PACTD. Conclusions: The CCDM-HeartSmart? could prove invaluable for optimizing response to fluid replacement and for guiding cardiovascular support in neurosurgical patients. This new, simple technology may help to facilitate routine adoption of perioperative optimization of blood flow using early goal-directed therapy.展开更多
Objective To evaluate risk factors of hospital - acquired pneumonia in patients with neurosurgical diseases. Methods Totally 17 literatures from 2001 - 2009 were selected according to the criteria and assessed by Meta...Objective To evaluate risk factors of hospital - acquired pneumonia in patients with neurosurgical diseases. Methods Totally 17 literatures from 2001 - 2009 were selected according to the criteria and assessed by Meta - analysis. The pools OR values of influencing factors展开更多
Objective Arachnoid cysts are non-arachnoid fluid collections that accout for about 1% of all intracranial space-occupying lessions. So far,the optimal method of treatment for symptomatic arachnoid cysts remains contr...Objective Arachnoid cysts are non-arachnoid fluid collections that accout for about 1% of all intracranial space-occupying lessions. So far,the optimal method of treatment for symptomatic arachnoid cysts remains controversial. In this article,we want to find an ideal technique展开更多
The number of invasive procedures in medicine is increasing,as is the employment of new technological achievements.In the era of informationcommunication technology,one such achievement is also the telemedicine networ...The number of invasive procedures in medicine is increasing,as is the employment of new technological achievements.In the era of informationcommunication technology,one such achievement is also the telemedicine network.In Slovenia,it is known as the Telekap(TeleStroke) network,which was primarily designed for fast and efficient management of stroke patients.In the neurosurgical community,the system is frequently used also for conveying vital information regarding subarachnoid haemorrhage and trauma.Especially in neurosurgical emergencies,this communication system offers thorough information about the extent and location of bleeding and facilitates the preoperative planning of neurosurgical interventions.From our experience so far,the system should be expanded to other neuro-centres as well to all neurosurgery departments in order to facilitate patient management,their acute hospital care,and inter-speciality collaboration.展开更多
基金This study was funded by National Natural Science Foundation of China(No.61802385)Natural Science Foundation of Guangdong(No.2018A030313100)+1 种基金Shenzhen Science and Technology Program(Nos.JSGG20170414112714341 and JCYJ20170302153015013)Research Grants Council of the Hong Kong Special Administrative Region(No.14225616).
文摘This paper presents a novel augmented reality(AR)-based neurosurgical training simulator which provides a very natural way for surgeons to learn neurosurgical skills.Surgical simulation with bimanual haptic interaction is integrated in this work to provide a simulated environment for users to achieve holographic guidance for pre-operative training.To achieve the AR guidance,the simulator should precisely overlay the 3D anatomical information of the hidden target organs in the patients in real surgery.In this regard,the patient-specific anatomy structures are reconstructed from segmented brain magnetic resonance imaging.We propose a registration method for precise mapping of the virtual and real information.In addition,the simulator provides bimanual haptic interaction in a holographic environment to mimic real brain tumor resection.In this study,we conduct AR-based guidance validation and a user study on the developed simulator,which demonstrate the high accuracy of our AR-based neurosurgery simulator,as well as the AR guidance mode’s potential to improve neurosurgery by simplifying the operation,reducing the difficulty of the operation,shortening the operation time,and increasing the precision of the operation.
文摘Objective: This study sought to identify the prevalence of operations for spinal epidural neoplastic metastases relative to other spine and neurosurgical operative procedures. Methods: This study was descriptive and involved a retrospective review of data collected from patients who underwent neurosurgeries between February 1997 and January 2015 at a single quaternary hospital. The examined population was distributed across five descriptive categories to perform numerical distributions among neurosurgical operative procedures. Results: A total of 12,802 neurosurgical procedures were identified. These procedures were classified as follows: Skull and brain, 11,192 (87.42%);spinal column and spinal nervous tissue, 1462 (11.42%);and peripheral nerves, 148 (1.16%). Surgical procedures for the 1462 (100%) cases of spinal column and spinal nervous tissue diseases were distributed by nosology as follows: Degenerative intervertebral disk and spondylosis, 768 (52.54%);neoplastic, 279 (19.08%);traumatic, 221 (15.11%);congenital, 163 (11.14%);infectious and inflammatory, 27 (1.85%);and vascular, 4 (0.28%). With respect to the distribution of the 279 (100%) surgical procedures for spinal column and spinal nervous tissue neoplastic diseases, 124 (44.44%) procedures were for intradural neoplasms, and 155 (55.56%) procedures were for epidural spinal column neoplasms. The 155 (100%) operations for epidural neoplastic diseases were distributed into two groups: Primary epidural neoplasms, 42 (27.10%);and secondary epidural neoplasms, 113 (72.90%). Spinal column epidural neoplastic metastases (secondary neoplasms) represented 0.88% of the 12,802 neurosurgical procedures. Conclusions: Surgical procedures for spinal metastasis are uncommon with respect to all neurosurgical operative procedures. Trend analysis reveals an unchanging trend of prevalence for these procedures.
基金supported by the National Research Foundation(NRF) of Korea Grant funded by the Korean Government(MSIP),No.2015R1A2A2A01004073
文摘The fornix, which is involved in transfer of episodic memory, is an important structure of the Papez circuit between the medial diencephalon and the medial temporal lobe. Many studies using DTI have reported on injury of the fornix in patients with brain injury （Nakayama et al., 2006; Sugiyama et al., 2007; Wang et al., 2008; Chang et al., 2010）. However, only a few studies on recov- ery of an injured fornix in patients with brain injury, including traumatic brain injury and stroke, have been reported （Yeo et al., 2011; Yeo and Jang, 2013a, b）. In this study, using follow up DTT images, we reported on a patient who showed recovery of injured fornical crura following a neurosurgical operation for a brain tumor.
文摘Background: Maintenance of normal fluid homeostasis is challenging in neurosurgical patients. Consequently, we studied hydration assessment in neurosurgical intensive care patients. Methods: Pulmonary artery catheter thermodilution (PACTD) is the conventional method for measuring cardiac index (CI) and mean pulmonary artery occlusion (MPAOP) or wedge pressure (MPWP). We compared values from this technique with those derived from continuous cardiac dynamic monitoring (CCDM)-HeartSmart?, a new, less invasive, software-based technique. Over 4 years, we undertook an audit of 101 paired sets of data from 21 patients with sub-arachnoid hemorrhage who had pulmonary artery flotation catheters inserted as part of their treatment. Measured values of CI and MPWP were obtained retrospectively from patients’ charts and compared with values calculated using CCDM-HeartSmart? software. Results: Using the Bland-Altman method for comparing two measurement techniques, there was good agreement between measured and calculated MPWP (mean of differences –1.81, SD 3.97, SE 0.39, 95% CI –2.59 to 2.04 l/min/m2;two-sided p 2). This indicates that, when estimating CI and MPWP in critically ill neurosurgical patients, CCDM-HeartSmart? provides values close to those generated using PACTD. Conclusions: The CCDM-HeartSmart? could prove invaluable for optimizing response to fluid replacement and for guiding cardiovascular support in neurosurgical patients. This new, simple technology may help to facilitate routine adoption of perioperative optimization of blood flow using early goal-directed therapy.
文摘Objective To evaluate risk factors of hospital - acquired pneumonia in patients with neurosurgical diseases. Methods Totally 17 literatures from 2001 - 2009 were selected according to the criteria and assessed by Meta - analysis. The pools OR values of influencing factors
文摘Objective Arachnoid cysts are non-arachnoid fluid collections that accout for about 1% of all intracranial space-occupying lessions. So far,the optimal method of treatment for symptomatic arachnoid cysts remains controversial. In this article,we want to find an ideal technique
文摘The number of invasive procedures in medicine is increasing,as is the employment of new technological achievements.In the era of informationcommunication technology,one such achievement is also the telemedicine network.In Slovenia,it is known as the Telekap(TeleStroke) network,which was primarily designed for fast and efficient management of stroke patients.In the neurosurgical community,the system is frequently used also for conveying vital information regarding subarachnoid haemorrhage and trauma.Especially in neurosurgical emergencies,this communication system offers thorough information about the extent and location of bleeding and facilitates the preoperative planning of neurosurgical interventions.From our experience so far,the system should be expanded to other neuro-centres as well to all neurosurgery departments in order to facilitate patient management,their acute hospital care,and inter-speciality collaboration.
