Comparison of pituitary stalk angle, inter-neural angle and optic tract angle in relation to optic chiasm location on 3-dimensional magnetic resonance imaging

2019 ◽  
Vol 64 ◽  
pp. 169-173 ◽  
Author(s):  
K. Suprasanna ◽  
K.M. Vinay Kumar ◽  
Ashvini Kumar ◽  
Prasanna Mithra
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Optic Tract ◽  
Optic Chiasm ◽  
Pituitary Stalk ◽  
Resonance Imaging ◽  
3 Dimensional

Radiation Necrosis of the Optic Chiasm, Optic Tract, Hypothalamus, and Upper Pons after Radiotherapy for Pituitary Adenoma, Detected by Gadolinium-Enhanced, T1-Weighted Magnetic Resonance Imaging: Case Report

Neurosurgery ◽  
1990 ◽  
Vol 27 (4) ◽  
pp. 640-643 ◽  
Author(s):  
Osamu Tachibana ◽  
Narihito Yamaguchi ◽  
Tetsumori Yamashima ◽  
Junkoh Yamashita
Keyword(s):  
Magnetic Resonance Imaging ◽  
Pituitary Adenoma ◽  
Magnetic Resonance ◽  
Radiation Necrosis ◽  
Optic Tract ◽  
Optic Chiasm ◽  
Magnetic Resonance Imaging Scan ◽  
Resonance Imaging ◽  
Weighted Magnetic Resonance Imaging ◽  
Resonance Imaging Scan

Abstract A 26-year-old woman was treated for a prolactin secreting pituitary adenoma by surgery and radiotherapy (5860 rads). Fourteen months later, she developed right hemiparesis and dysarthria. A T1-weighted magnetic resonance imaging scan using gadolinium contrast showed a small, enhanced lesion in the upper pons. Seven months later, she had a sudden onset of loss of vision, and radiation optic neuropathy was diagnosed. A T1-weighted magnetic resonance imaging scan showed widespread gadolinium-enhanced lesions in the optic chiasm, optic tract, and hypothalamus. Magnetic resonance imaging is indispensable for the early diagnosis of radiation necrosis, which is not visualized by radiography or computed tomography.

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