Advances and Technical Standards in Neurosurgery: 023
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Indeed, it opened up the possibility of three-dimensional reconstruction of intracranial content, overcoming the classical limits of ultrasonography. However, the first CT scanner able to perform serial axial scans took an enormous amount of time, and, as a result, efforts were made to reduce scanning time, introducing spiral CT in , progressively reducing the rotation time of the detector in , 0. Topographical localisation of a pathological process is particularly important in studies of the brain, in which different areas are responsible for different functions in a somatotopic arrangement that is unique in the human body.
From this point of view, it is easy to understand why after the introduction of an imaging modality such as CT, which allowed proper recognition of the differences between anatomical structures, there inevitably emerged a need for better definition of the metabolic features of brain tissue. The focus turned to water molecules and the more accurate detection of both anatomical landmarks and the local homeostasis of ions diluted in water. This was made possible by an important discovery by two American scientists, Felix Bloch and Edward Purcell, awarded the Nobel Prize for Physics in It was on the basis of their theory that, in , Numar Industry produced the first prototype of an MRI system.
This, in turn, prompted further evolution of the CT scan as a therapeutic tool, with the progressive introduction of more precise sequences, and to use of MRI studies to optimise management decisions. Computer graphics and post-processing were subsequently applied to both MRI and CT scans in order to obtain three-dimensional reconstructions that proved to be especially useful in demonstrating brain vasculature aneurysms and malformations.
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Post-imaging computerised processing is, instead, particularly useful when planning an operational strategy for brain tumour removal. Neuroncology is the neurosurgical subspeciality that most benefited from these technological innovations: the first attempt at robot-assisted brain surgery with the PUMA for brain tumour biopsy dates back to If it is true, as it undoubtedly is, that the application of microsurgical techniques in neurosurgery such as the use of the floating microscope classically attributed to M.
Considering the great complexity of the brain, in which function-specific areas have been extensively studied and recognised, tuning these more precise diagnostic and planning instruments to address and correct specific functional alterations of different brain areas could be considered the most natural evolution of brain disease diagnosis and management. Despite this, stereotactic neurosurgery, a procedure in which the target is described on the basis of its coordinates in space, was actually developed relatively earlier than other branches of neurosurgery.
Developments in stereotactic neurosurgery, starting with the invention by Sir Victor Horsley and Robert H. Spiegel and Henry T. Wycis and in by Lars Leksell, have run parallel to technical improvements. In Russell A. Brown invented a stereotactic apparatus based on the novel discovery of the CT scanner for three-dimensional visualisation of the intracranial content.
PubMed review. Our experience. In our department the use of functional neurosurgery has gradually increased and developed over the years, keeping abreast of the new advances in medical technology. The increasing implementation of technology in our department is schematised in figure 1.
As new indications for treatment emerged in the international literature, they were discussed and incorporated into our experience. Technical note on deep brain stimulation.
The Cosman Roberts Wells headframe CRW is positioned on the patient in the operating room, with local anaesthesia performed at the four pinning sites. The preoperative MRI scan is 2 mm sliced, weighted in T1 and T2 three dimensionally, and contrast medium infusion is obtained to better visualise the intracranial vascularisation. When deemed necessary, a tractography is also performed. Upon fusion of the neuroradiological studies, coordinates of the desired target are obtained and the patient is positioned on the operating table.
General anaesthesia is used when rendered necessary by the specific features of the disease as in Tourette syndrome, for example. The intraoperative CT scanner O-arm, Medtronic, Minneapolis creates a barrier between the sterile portion of the surgical field and the non-sterile part where the patient can be accessed for inspection and evaluation during macrostimulation or emergency procedures.
Simultaneous multi-track microrecording, local field potentials, and macrostimulation are carried out Alpha-Omega Engineering, Nazareth during the exploring electrode descent, in order to improve the accuracy and safety of the overall procedure. Intraoperative CT scans are fused with the preoperative neuronavigation planning to determine the correct positioning of the definitive leads. The definitive leads are then connected to externalisation wires when required for postoperative studies, and the headframe is removed. An MRI of the brain is obtained during the first postoperative day to make sure no intracranial complication is arising.
Results and discussion. On the basis of the results of our Pubmed database search, the most recurrent topic in the four fields of neurosurgery stereotactic, oncological, vascular, and trauma is that of improvement of surgical techniques as a result of changing imaging modalities, cited in 34 papers. Of these, four dealt with stereotactic procedures, 10 with oncological neurosurgery, 10 with trauma neurosurgery, and 10 with vascular neurosurgery.
The second most cited topic was the robotisation of procedures, cited in 11 articles, five pertaining to oncological neurosurgery, three to traumatology procedures, two to vascular neurosurgery and one to stereotactic techniques. What also emerged from our analysis is that there is an ongoing evolution of surgery towards preoperative planning, through greater computerisation of procedures on the basis of better anatomical definition and thus more detailed instruction of the machine, and robotisation of the surgical act itself. This may lead to a reduction of surgical times due to less bleeding and also of surgical scars, as the invasiveness of the surgical act is reduced to a minimum.
It is also easy to imagine how more precise planning of the surgical procedure could open up the possibility of addressing previously untreatable lesions The concept of better surgical management of disease starting with improved imaging and thus improved neuronavigation devices was outlined in a review by Benvenuti et al. The cost-effectiveness ratio is an aspect that has been considered in numerous evaluations carried out in the field of vascular neurosurgery, where more invasive procedures, such as angiography, are gradually being abandoned in favour of non-invasive imaging modalities such as CT virtual angiography This trend emerges clearly in the increasing indications for endovascular treatment of intracranial vascular malformations such as aneurysms, and also in the amount of debate on the proper indications for surgery and endovascular treatment.
In general, one volume is published per year. The Advances section presents fields of neurosurgery and related areas in which important recent progress has been made. The Technical Standards section features detailed descriptions of standard procedures to assist young neurosurgeons in their post-graduate training. The contributions are written by experienced clinicians and are reviewed by all members of the Editorial Board.
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Add to Wishlist. USD Buy Online, Pick up in Store is currently unavailable, but this item may be available for in-store purchase. Sign in to Purchase Instantly. Overview This series, sponsored by the European Association of Neurosurgical Societies, has already become a classic.
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New Releases. Notify me. Itwasdesignedtocomplementthe Europeanpost-graduatetrainingsystemforyoungneurosurgeonsandwas? Allcontributionshavebeenp- lishedinEnglishtofacilitateinternationalunderstanding. Theambitionofallsuccessiveeditorialboardshasbeentoprovidean opportunityformaturescholarshipandre? Theseriesprovidesaremarkableaccountofprogress overthepast35years,bothwithregardtoadvances,detaileddescriptions of standard operative procedures and in- depth reviews of established knowledge.
Intraoperative MRI-Guided Neurosurgery
Thepresentvolumeisnoexceptionandshouldappealtoboth experiencedneurosurgeonsandyoungneurosurgeonsintrainingalike. TheEditors Contents Listofcontributors XIII Advances Present and potential future adjuvant issues in high-grade astrocytic glioma 1,2 1 1 2 1 treatment. Product details Format Paperback pages Dimensions x x Bestsellers in Neurosurgery. Add to basket. Into the Magic Shop Dr. Do No Harm Henry Marsh. Admissions Henry Marsh. Handbook of Neurosurgery Mark S.
Advances and Technical Standards in Neurosurgery, Vol. 23 - ProQuest
Diagnostic Cerebral Angiography Anne G. Surgical Anatomy of the Lumbar Plexus R. Gray Matter David Joellevy Kilpatrick. Neuro-Ophthalmology Illustrated Valerie Biousse. Becoming a Neurosurgeon John Colapinto. Neurosurgery Self-Assessment Rahul S. Yasargil M D Larry Rogers.