An Articulated Frameless Stereotactic Device in Open Cranium Surgery

2015 ◽  
pp. 44-48
Author(s):  
Eiju Watanabe ◽  
Yoshiaki Mayanagi ◽  
Kintomo Takakura
Keyword(s):  
Stereotactic Device

Stereotactic Device for Gamma Knife Radiosurgery in Experimental Animals: Technical Note

2006 ◽  
Vol 84 (2-3) ◽  
pp. 97-102 ◽  
Author(s):  
Yong-Seok Im ◽  
Do-Hyun Nam ◽  
Jong-Soo Kim ◽  
Sang-Gyu Ju ◽  
Do-Hoon Lim ◽  
...  
Keyword(s):  
Gamma Knife ◽  
Gamma Knife Radiosurgery ◽  
Technical Note ◽  
Experimental Animals ◽  
Stereotactic Device

CT-Guided Pericardiocentesis

1996 ◽  
Vol 37 (3P2) ◽  
pp. 775-778 ◽  
Author(s):  
O. Duvernoy ◽  
A. Magnusson
Keyword(s):  
Cardiac Surgery ◽  
Pericardial Effusion ◽  
Guide Wire ◽  
Pericardial Fluid ◽  
Good Information ◽  
Indwelling Catheter ◽  
Ct Guided ◽  
Cardiac Apex ◽  
The Right ◽  
Stereotactic Device

Purpose: Pericardial effusion in patients who have recently undergone cardiac surgery is often trapped in compartments. CT of the pericardium provides good information about the distribution of pericardial fluid in the postoperative period after cardiac surgery. Contrary to echocardiography, CT imaging is not affected by postoperative mediastinal emphysema and pain from the wound. A method for CT-guided pericardiocentesis was developed. Material and Methods: CT-guided pericardiocentesis was carried out with a stereotactic device in 10 patients. The pericardium was punctured with a 0.9-mm needle and a 0.46-mm guide wire was introduced through the needle. An indwelling catheter was introduced over the guide wire and was left in the pericardium. Both the subxiphoid and parasternal approaches were used. Results: CT guidance facilitated placement of an indwelling catheter into the pericardial space in positions difficult to reach in patients with postoperative pericardial compartments, i.e. near the right atrium and adjacent to the cardiac apex/left ventricle. Conclusion: CT-guided pericardiocentesis offers a new possibility in patients where fluoroscopically or echocardiographically guided pericardiocentesis is difficult.

scholarly journals Development of a Stereotactic Device for Gamma Knife Irradiation of Small Animals

2008 ◽  
Vol 43 (1) ◽  
pp. 26 ◽  
Author(s):  
Hyun-Tai Chung ◽  
Young Seob Chung ◽  
Dong Gyu Kim ◽  
Sun Ha Paek ◽  
Keun-Tae Cho
Keyword(s):  
Gamma Knife ◽  
Small Animals ◽  
Stereotactic Device

A Stereotactic Device for Experimental Rat and Mouse Irradiation Using Gamma Knife Model B - Technical Note

2001 ◽  
Vol 143 (1) ◽  
pp. 83-88 ◽  
Author(s):  
T. Kamiryo ◽  
K. Han ◽  
J. Golfinos ◽  
P. Kim Nelson
Keyword(s):  
Gamma Knife ◽  
Technical Note ◽  
Mouse Irradiation ◽  
Stereotactic Device

Open Surgery Assisted by the Neuronavigator, a Stereotactic, Articulated, Sensitive Arm

Neurosurgery ◽  
1991 ◽  
Vol 28 (6) ◽  
pp. 792-800 ◽  
Author(s):  
Eiju Watanabe ◽  
Yoshiaki Mayanagi ◽  
Yukio Kosugi ◽  
Shinya Manaka ◽  
Kintomo Takakura
Keyword(s):  
Open Surgery ◽  
Three Dimensional ◽  
Neurosurgical Procedures ◽  
Flow Meter ◽  
Measuring Point ◽  
Computed Tomographic ◽  
The Core ◽  
Tumor Edge ◽  
Mass Lesions ◽  
Stereotactic Device

Abstract A new computed tomographic-stereotactic device that translates the operating point onto preoperative computed tomographic (CT) images, the Neuronavigator, has been developed. We have applied this system to various neurosurgical procedures to examine its usefulness. The system consists of a 6-joint sensing arm and a 16-bit personal computer. It projects the location of the arm tip onto a corresponding CT slice with a cursor that guides the surgeon toward the intracranial target during open surgery. The system also projects the location of the tip onto angiograms, and when used in conjunction with echography or a transcranial Doppler (TCD) flow meter, the surgeon's ability to navigate is enhanced. Sixty-eight patients underwent operation with the Neuronavigator. The navigation system worked as the core of a multimodal three-dimensional data base that proved to be useful during surgery. The maximum detection error was 2.5 mm, which was considered sufficient for open microsurgery. It also proved useful in designing the position of a craniotomy, in targeting deep-seated mass lesions, and in tracing the tumor edge, which had been identified on a CT scan. When the angiogram was combined with the navigator, it became easy to identify key vessels within a small operating field. The system was also combined with a TCD flow meter. This combination makes it possible to translate the measuring point of the TCD directly into CT coordinates, improving the precision of location of the TCD probe. The Neuronavigator combines various diagnostic images into one database and effectively guides the surgeon during surgery.

scholarly journals Safety of stereotactic laser ablations performed as treatment for glioblastomas in a conventional magnetic resonance imaging suite

2016 ◽  
Vol 41 (4) ◽  
pp. E7 ◽  
Author(s):  
Robert C. Rennert ◽  
Kate T. Carroll ◽  
Mir Amaan Ali ◽  
Thomas Hamelin ◽  
Leon Chang ◽  
...  
Keyword(s):  
Thermal Ablation ◽  
Tumor Recurrence ◽  
Wound Infections ◽  
Wild Type ◽  
Resonance Imaging ◽  
Isocitrate Dehydrogenase 1 ◽  
Conventional Mri ◽  
Stereotactic Device ◽  
Probe Insertion ◽  
Ablation Line

OBJECTIVE Stereotactic laser ablation (SLA) is typically performed in the setting of intraoperative MRI or in a staged manner in which probe insertion is performed in the operating room and thermal ablation takes place in an MRI suite. METHODS The authors describe their experience, in which SLA for glioblastoma (GBM) treatment was performed entirely within a conventional MRI suite using the SmartFrame stereotactic device. RESULTS All 10 patients with GBM (2 with isocitrate dehydrogenase 1 mutation [mIDH1] and 8 with wild-type IDH1 [wtIDH1]) were followed for > 6 months. One of these patients underwent 2 independent SLAs approximately 12 months apart. Biopsies were performed prior to SLA for all patients. There were no perioperative morbidities, wound infections, or unplanned 30-day readmissions. The average time for a 3-trajectory SLA (n = 3) was 436 ± 102 minutes; for a 2-trajectory SLA (n = 4) was 321 ± 85 minutes; and for a single-trajectory SLA (n = 4) was 254 ± 28 minutes. No tumor recurrence occurred within the blue isotherm line ablation zone, although 2 patients experienced recurrence immediately adjacent to the blue isotherm ablation line. Overall survival for the patient cohort averaged 356 days, with the 2 patients who had mIDH1 GBMs exhibiting the longest survival (811 and 654 days). CONCLUSIONS Multitrajectory SLA for treatment of GBM can be safely performed using the SmartFrame stereotactic device in a conventional MRI suite.

scholarly journals Development of Hitchcock Stereotactic Device for Intraoperative Open MRI

2002 ◽  
Vol 3 (4) ◽  
pp. 267-272
Author(s):  
Hiroki Taniguchi ◽  
Hiroshi Iseki ◽  
Takanori Taira ◽  
Hiroshi Shirakawa ◽  
Hideaki Iwano ◽  
...  
Keyword(s):  
Open Mri ◽  
Stereotactic Device

Quantification of increased exposure resulting from orbital rim and orbitozygomatic osteotomy via the frontotemporal transsylvian approach

1999 ◽  
Vol 91 (6) ◽  
pp. 1020-1026 ◽  
Author(s):  
Marc S. Schwartz ◽  
Gregory J. Anderson ◽  
Michael A. Horgan ◽  
Jordi X. Kellogg ◽  
Sean O. McMenomey ◽  
...  
Keyword(s):  
Dimensional Space ◽  
Three Dimensional ◽  
Zygomatic Arch ◽  
Neurosurgical Procedures ◽  
Content Type ◽  
Transsylvian Approach ◽  
Surgical Access ◽  
Stereotactic Device ◽  
Orbital Rim ◽  
Fine Print

Object. Use of orbital rim and orbitozygomatic osteotomy has been extensively reported to increase exposure in neurosurgical procedures. However, there have been few attempts to quantify the extent of additional exposure gained by these maneuvers. Using a novel laboratory technique, the authors have attempted to measure the increase in the “area of exposure” that is gained by removal of the orbital rim and zygomatic arch via the frontotemporal transsylvian approach.Methods. The authors dissected five cadavers bilaterally. The area of exposure provided by the frontotemporal transsylvian approach was determined by using a frameless stereotactic device. With the tip of a microdissector placed on targets deep within the exposure, the position of the end of the microdissector handle was measured in three-dimensional space as the microdissector was rotated around the periphery of the operative field. This maneuver was performed via the frontotemporal approach alone as well as with orbital rim and orbitozygomatic osteotomy approaches. After data manipulation, the areas of exposure corresponding to the polygons used to define these handle positions were calculated and directly compared. On average, the area of exposure provided by the frontotemporal transsylvian approach was increased 26 to 39% (p < 0.05) by adding orbital rim osteotomy and an additional 13 to 22% (not significant) with removal of the zygomatic arch.Conclusions. Significant and consistent increases in surgical exposure were obtained by using orbital osteotomy, whereas zygomatic arch removal produced less consistent gains. Both maneuvers may be expected to improve surgical access. However, because larger and more consistent gains were afforded by orbital rim removal, the threshold for removal of this portion of the orbitozygomatic complex should be lower.

A Stereotactic Device for Intraparenchymal Spinal Cord Injections: Latest Developments for Practical Clinical Use

2021 ◽  
pp. 1-7
Author(s):  
Thais Federici ◽  
Nathan Hardcastle ◽  
Pavlos Texakalidis ◽  
Muhibullah S. Tora ◽  
Jeremy Wetzel ◽  
...  
Keyword(s):  
Spinal Cord ◽  
Clinical Use ◽  
Stereotactic Device

This manuscript introduces the latest generation of a patient-mounted platform designed for segmental injections of therapeutics direct into the spinal cord parenchyma. It emphasizes its importance and it presents the rationale for developing this delivery methodology. It compares the newest with the previous generations, detailing how the modifications can streamline transportation, assembly, sterilization, and utilization of the platform by different surgeons. Finally, the illustrations depict the main alterations, as well as a cadaveric assessment of the device prototype in the cervical and thoracolumbar regions.

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