WebJun 7, 2024 · Development of a contouring guide for three different types of optic chiasm: A practical approach. Wenhao Chen, Wenhao Chen. ... Sparing of the organs at risk (OARs) is a crucial task in daily radiotherapy practice. Irradiation of the optic chiasm (OC) results in radiation-induced optic neuropathy (RION). The structure of the OC is complex, and ... WebFeb 1, 2015 · Optic chiasm is contoured as a dotted line. (g) Anatomy of the optic chiasm and its relationship to the circle of Willis. Both CT ( Supplementary Fig. sI) and MRI …
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WebDec 16, 2024 · The Optic Nerve (CN II) and Visual Pathway. The optic nerve (CN II) is the second cranial nerve, responsible for transmitting the special sensory information for vision. It is developed from the optic vesicle , an … WebOct 30, 2024 · Per clinical routine, all of these brain MRI volumes already had associated contours for the brain and for standard organs-at-risk (OARs), including bilateral lens, bilateral optic nerves, and optic chiasm. This study was reviewed and approved by the UC San Diego Institutional Review Board (IRB #181609). Hippocampal segmentation life.douyin.com 已拒绝连接
Optic Chiasm Function, Anatomy & Definition Body Maps
WebMay 22, 2024 · Average motion of the optic chiasm was approximately 0.50–0.75 mm, which increased chiasm Dmax by a mean of 14%. ... Due to the submillimeter motion of the chiasm, a consistent method of delineating the chiasm contour was critical. This was accomplished by using a semi-automated segmentation procedure in MATLAB (R2024b, … Weboptic chiasm optic nerve oral cavity parotid pituitary spinal cord (cervical) submandibular gland supraglottic larynx temporal lobe thyroid CT-based delineation of organs at risk in … WebJan 11, 2024 · The aim of the treatment is to reduce mean percentage variation in temporal lobe contouring by 50%, from a baseline of 39.9% baseline to a target 19.9%, for patients receiving radiotherapy for NPC at the Department of Radiation Oncology at a tertiary hospital in Singapore over 6 months. m countdown直播網址