scholarly journals Extraction of overt verbal response from the acoustic noise in a functional magnetic resonance imaging scan by use of segmented active noise cancellation

2005 ◽  
Vol 53 (3) ◽  
pp. 739-744 ◽  
Author(s):  
Kwan-Jin Jung ◽  
Parikshit Prasad ◽  
Yulin Qin ◽  
John R. Anderson
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Acoustic Noise ◽  
Noise Cancellation ◽  
Verbal Response ◽  
Magnetic Resonance Imaging Scan ◽  
Functional Magnetic Resonance ◽  
Resonance Imaging ◽  
Active Noise ◽  
Resonance Imaging Scan

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.

Mobile Schwannoma of the Cauda Equina Diagnosed by Magnetic Resonance Imaging

Neurosurgery ◽  
1989 ◽  
Vol 25 (6) ◽  
pp. 968-971 ◽  
Author(s):  
Toyohiko Isu ◽  
Yoshinobu Iwasaki ◽  
Minoru Akino ◽  
Masafumi Nagashima ◽  
Hiroshi Abe
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Cauda Equina ◽  
Magnetic Resonance Imaging Scan ◽  
Resonance Imaging ◽  
Resonance Imaging Scan

Abstract Three cases of a mobile cauda equina schwannoma, preoperatively diagnosed by magnetic resonance imaging, are described. When dealing with tumors of the cauda equina, it is important to carry out a second magnetic resonance imaging scan after changes in posture, bearing in mind the possibility of mobility of the tumor.

scholarly journals Acoustic noise and functional magnetic resonance imaging: Current strategies and future prospects

2002 ◽  
Vol 16 (5) ◽  
pp. 497-510 ◽  
Author(s):  
Edson Amaro ◽  
Steve C.R. Williams ◽  
Sukhi S. Shergill ◽  
Cynthia H.Y. Fu ◽  
Mairead MacSweeney ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Functional Magnetic Resonance Imaging ◽  
Acoustic Noise ◽  
Future Prospects ◽  
Functional Magnetic Resonance ◽  
Resonance Imaging

Lipoma of the parapharyngeal space

2006 ◽  
Vol 120 (2) ◽  
pp. 1-3 ◽  
Author(s):  
E J M McNeill ◽  
P R Samuel ◽  
S England
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Clinical Examination ◽  
Parapharyngeal Space ◽  
Diagnostic Radiology ◽  
Magnetic Resonance Imaging Scan ◽  
Resonance Imaging ◽  
Nocturnal Cough ◽  
Resonance Imaging Scan

A 75-year-old gentleman presented to our department with dysphagia, nocturnal cough and dysphonia. Clinical examination revealed a large parapharyngeal mass extending from the left nasopharynx to the glottis. A magnetic resonance imaging scan confirmed the lipomatous nature of the lesion and elegantly demonstrated its anatomy. We discuss the aetiology and management of such lesions and focus on the diagnostic radiology of the parapharyngeal space.

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