Optic Chiasm Radiation Dose Tolerance

USING INTENSITY-MODULATED RADIATION THERAPY D. R .D., B. M C ...
And normal structures including the optic chiasm. Dose-volume histograms (DVHs) for the whole neuropathway.5,6 Radiation-induced optic neurop- 5/5 (normal tissue tolerance dose to therapeutic irradia- ... Document Viewer

Dose Fractionation In Stereotactic Radiotherapy For ...
Range to the estimate of optic tolerance for each number of fractions indicates that a BED of 83.6 Gy exceeds optic nerve tolerance for fewer than 22 fractions. ... Return Doc

Radiation-induced Bilateral optic Neuropathy In Cancer Of The ...
Of the optic chiasm from radiotherapy after 60 Gy. Abbildung 1. tolerance dose was mainly due to the unanticipated dose con- radiation optic neuropathy will be at large an avoidable com- ... View This Document

The Influence Of Air Cavities On The optic chiasm dose During ...
The influence of air cavities on the optic chiasm dose during pituitary radiotherapy for acromegaly B JONES, MSc, FRCR, S SAMARASEKARA, BSc, MSc, L T TAN, MRCP, FRCR and region is limited by the tolerance of the optic nerve pathway. The optic chiasm itself is situated in close ... Retrieve Doc

Stereotactic Irradiation For Meningiomas - 360 Oncology
Stereotactic Irradiation for Meningiomas. Optic Chiasm Tumor SRS Tolerance Optic Apparatus Maximum Dose cGy II Neuropathy <400 401-600 601-800 801-1000 >1000 0/9 0/13 0/13 1/2 3/15 Tishler Int J Radiation Oncology Biol Phys 27:215-221,1993 P=0.009}} ... Fetch Content

Review Of Head And Neck Anatomy - Medical Dosimetry
Review of Head and Neck Anatomy Vipul Thakkar, MD High dose radiation is a mainstay of treatment for many H/N cancers. Optic Chiasm Visual data travels from the retina to the chiasm through the optic nerves. Image from Gray’s Anatomy. ... Access Doc

RADIATION TOLERANCE DOSES QUANTEC WORKING GROUP & OTHERS
RADIATION TOLERANCE DOSES QUANTEC WORKING GROUP & OTHERS Carlos A. Perez, M.D. RADIATION OPTIC NERVE / CHIASM NEUROPATHY Mayo C et al Int J Rad Oncol Bio Phys 76 (Suppl 3): S28, 2010. radiation dose, fractionation ... Retrieve Full Source

Radiation tolerance doses Pdf - WordPress.com
TOLERANCE DOSE 7. to X radiation or gamma radiation, Radiation DoseVolume Effects of Optic Nerves and Chiasm. The evidence is strong that radiation tolerance is increased with a reduction in the dose per. PDF 195 KB ... Fetch Document

A Review Of QUANTEC Normal Tissue Tolerances
A Review of QUANTEC Normal Tissue Tolerances MaryLou DeMarco, MS,CMD Optic Nerve/Chiasm 3. Brain Stem 4. Spinal Cord 5. Ear 6. Radiation Technique Dose Myelopathy Risk Standard Fractionation 50 Gy 0.2% ... Return Doc

Conformal radiation Therapy Treatment Planning Reduces The ...
Conformal radiation therapy treatment planning reduces the dose to the optic structures for patients with tumors of the paranasal sinuses David M. Brizel*, mately 65 Gy, and since tolerance of the optic chiasm ... Get Document

C M K. M L B. M Z HARLES AYO H ARY ARTEL H AWRENCE ARKS JOHN ...
Owing to the small volumes irradiated and rapid dose Tolerance of optic nerves and chiasm to RT d C. MAYO et al. S29. gradients. radiation tolerance of the optic nerves and chiasm after ste-reotactic radiosurgery. Int J Radiat Oncol Biol Phys 2003; 55:1177–1181. ... Visit Document

Single And Hypo-fractionated SterotacticIrradiation Of Brain ...
Single and Hypo-fractionated SterotacticIrradiation of Brain and Body Lesions Curtis Miyamoto, M.D. •Best if tumor 3-5 mm from optic chiasm •Dose = 1500-2500 cGySRS and 4500-5000 for SRT Spinal Cord Tolerance ... Content Retrieval

Dose To Craniofacial Region Through Portal Imaging Of ...
Dose to craniofacial region through portal imaging of optic nerves/chiasm 2.6 ± 0.9%, cochlea 2.6 ± 0.9%, hypothalamus/pituitary 2.4 ± 0.6%, Both the radiation dose and volume of brain that is being treated have been ... Document Viewer

Fundamental Issues Optimization For IMRT (I) -Fundamental Issues
-Fundamental Issues Ping Xia, Ph.D. University of California -San Francisco Tolerance doses: Optic nerves: Max dose < 54Gy Lens: Max dose < 6 Gy Chiasm: Max dose < 54 Gy Brainstem: Max dose < 54 Gy Eyes: Max dose < 45 Gy Poster,SU -FF -T-72 ... View This Document

Lacrimal Gland - Wikipedia, The Free Encyclopedia
The lacrimal gland is to the upper left. The right side of the picture is towards the nose. Tear system. a = lacrimal gland b = superior lacrimal punctum c = superior lacrimal canal d = lacrimal sac e = inferior lacrimal punctum f = inferior lacrimal canal g = nasolacrimal canal. ... Read Article

Radiation-induced optic Neuropathy - Jocn-journal.com
Radiation-induced optic neuropathy Hence assigning an exact dose the optic nerve or chiasm may have experienced is associated Leavitt JA, et al. A study of the radiation tolerance of the optic nerves and chiasm after stereotactic radiosur-gery. Int J Radiat Oncol Biol Phys 2003;55:1177–81. ... View Full Source

Radiosurgery - Wikipedia, The Free Encyclopedia
Radiotherapy relies on a different sensitivity of the target and the surrounding normal tissue to the total accumulated radiation dose. [16] and for higher doses to targets surrounded or backstopped by radiation-sensitive structures such as the optic chiasm or brainstem. ... Read Article

Dose—response tolerance Of The Visual Pathways And Cranial ...
Cranial nerves of the cavernous sinus requires that tion on the actual dose tolerance of the optic nerve fiber bundles. Yamaguchi N, Yamashima T, et al: Radiation necrosis of the optic chiasm, optic tract, hypothalamus, and upper pons after radiotherapy for pituitary adenoma, detected ... Access This Document

Material And Methods - ResearchGate
Optic Chiasm, Radiation Optic Neuropathy. Objective: The risk of RON seems rather to be dependent on the volume of the segment exposed to a certain amount of radiation than on absolute dose values. Title: Material and Methods Author: xy Last modified by: LEBERK Created Date: 12/15/2003 7 ... Retrieve Document

AAPM WGSBRT NTCP Optic Apparatus (chiasm And Nerve)
AAPM WGSBRT NTCP Optic Apparatus (chiasm and nerve) Michael T. Milano, MD PhD Department of Radiation Oncology University of Rochester, Rochester, NY 07/16/15 . AAPM WGSBRT •Maximum dose to optic nerve/chiasm. Optic nerves and chiasm ... Read Document

Radiation Dose Volume Effects Of The Optic Nerves And Chiasm
2484 Radiation Dose Volume Effects of the Optic Nerves and Chiasm C. Mayo1, M. K. Martel2, L. B. Marks3, IMRT dose gradients on tolerance. Radiation Dose Volume Effects of the Optic Nerves and Chiasm Author: C. Mayo; M.K. Martel; ... Fetch Here