Stereotactic Radiosurgery for Meningioma

Raleigh, David R.; Sneed, Penny K.

doi:10.1007/978-3-030-16924-4_12

Cited by 2 publications

(2 citation statements)

References 31 publications

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“…Radiotherapy is a treatment possibility for patients suffering from cancer. It employs ionizing radiation and cutting-edge technology to target large and small cancer volumes with high spatial accuracy by means of stereotactic radiosurgery (SRS) and stereotactic body radiation therapy (SBRT) [ 1 , 2 ]. The most important aspect is increasing the dose of radiation directed to cancer cells while sparing healthy tissue.…”

Section: Introductionmentioning

confidence: 99%

An Optical Reusable 2D Radiochromic Gel-Based System for Ionising Radiation Measurements in Radiotherapy

Kozicki,

Maras

2024

Molecules

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This work describes the development of a reusable 2D detector based on radiochromic reaction for radiotherapy dosimetric measurements. It consists of a radiochromic gel dosimeter in a cuboidal plastic container, scanning with a flatbed scanner, and data processing using a dedicated software package. This tool is assessed using the example of the application of the coincidence test of radiation and mechanical isocenters for a medical accelerator. The following were examined: scanning repeatability and image homogeneity, the impact of image processing on data processing in coincidence tests, and irradiation conditions—monitor units per radiation beam and irradiation field are selected. Optimal conditions for carrying out the test are chosen: (i) the multi-leaf collimator gap should preferably be 5 mm for 2D star shot irradiation, (ii) it is recommended to apply ≥2500–≤5000 MU per beam to obtain a strong signal enabling easy data processing, (iii) Mean filter can be applied to the images to improve calculations. An approach to dosimeter reuse with the goal of reducing costs is presented; the number of reuses is related to the MUs per beam, which, in this study, is about 5–57 for 30,000–2500 MU per beam (four fields). The proposed reusable system was successfully applied to the coincidence tests, confirming its suitability as a new potential quality assurance tool in radiotherapy.

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Section: Introductionmentioning

confidence: 99%

An Optical Reusable 2D Radiochromic Gel-Based System for Ionising Radiation Measurements in Radiotherapy

Kozicki,

Maras

2024

Molecules

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“…These tumors have a more aggressive course, higher recurrence rate, and higher histological grade than in adults. 1-3 They require radical resection for longer control. At the skull base, particularly when they reach a giant size, they encase the cerebral vessels creating a formidable challenge for safe resection.…”

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confidence: 99%

Resection of a Giant Atypical Pediatric Meningioma Encasing the Cerebral Arterial Tree: 2-Dimensional Operative Video

Strang¹,

Essayed

Aboud³

et al. 2022

Operative Neurosurgery

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Pediatric meningiomas are rare tumors that comprise less than 5% of intracranial neoplasms in the pediatric population. These tumors have a more aggressive course, higher recurrence rate, and higher histological grade than in adults. [1][2][3] They require radical resection for longer control. At the skull base, particularly when they reach a giant size, they encase the cerebral vessels creating a formidable challenge for safe resection. According to their origin, however, the arachnoidal rearrangement resulting from the tumor growth pattern can maintain an arachnoidal plane that permits safe dissection despite the full encasement of these vessels, [4][5][6] as in this case. Skull base approaches provide wide multiaxial exposure for fine microsurgical dissection under high magnification. 7 We demonstrate the surgical nuances of radical resection of a giant tuberculum sellae meningioma that involved the entire circle of the Willis vessels. The patient is a 13-year-old adolescent boy who presented with seizures and complete blindness. He underwent radical resection through a one and a half supraorbital craniotomy in the year 2000 with excellent clinical outcome. Histological evaluation and chromosomal analysis revealed an atypical meningioma (World Health Organization grade II) with a copy loss on chromosomes 14 and 22. A small residual was treated with Gamma Knife (Elekta) stereotactic radiosurgery. The patient's guardian consented to surgery and the publication of his images.

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Stereotactic Radiosurgery for Meningioma

Cited by 2 publications

References 31 publications

An Optical Reusable 2D Radiochromic Gel-Based System for Ionising Radiation Measurements in Radiotherapy

An Optical Reusable 2D Radiochromic Gel-Based System for Ionising Radiation Measurements in Radiotherapy

Resection of a Giant Atypical Pediatric Meningioma Encasing the Cerebral Arterial Tree: 2-Dimensional Operative Video

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