Involuted intraosseous lipoma of the sacrum showing high signal intensity on T1-weighted magnetic resonance imaging (MRI)

2001 ◽  
Vol 6 (2) ◽  
pp. 183-186 ◽  
Author(s):  
Satoru Kamekura ◽  
Kozo Nakamura ◽  
Hiromi Oda ◽  
Koichi Inokuchi ◽  
Takuo Iijima ◽  
...  
2019 ◽  
Vol 40 ◽  
pp. 24-31 ◽  
Author(s):  
Yasuyoshi Kuroiwa ◽  
Akiko Uchida ◽  
Atsushi Yamashita ◽  
Tosiaki Miyati ◽  
Kazunari Maekawa ◽  
...  

2017 ◽  
Vol 81 (11) ◽  
pp. 1747-1748 ◽  
Author(s):  
Yasuyoshi Kuroiwa ◽  
Hiroshi Tai ◽  
Atsushi Yamashita ◽  
Eiji Furukoji ◽  
Yasushi Kihara ◽  
...  

2017 ◽  
Vol 56 (23) ◽  
pp. 3205-3209
Author(s):  
Masayuki Kitagawa ◽  
Yoshihiro Yamanaka ◽  
Toru Adachi ◽  
Junitsu Ito ◽  
Kazutoshi Fukase ◽  
...  

1993 ◽  
Vol 118 (1) ◽  
pp. 92-96 ◽  
Author(s):  
Michele R. Warmund ◽  
Bruce H. Barritt ◽  
John M. Brown ◽  
Karen L. Schaffer ◽  
Byoung R. Jeong

`Jonagold'/Mark apple (Malus domestica Borkh.) trees that were chip-budded in Washington and Illinois on 31 Aug. or 21 Sept. 1989 were sampled in Apr. 1990 to determine if magnetic resonance imaging (MRI) could be used to nondestructively examine vascular continuity or discontinuity between the rootstock and scion. Images could be placed into three categories based on signal intensity: 1) the rootstock, bud shield, and the bud or new scion growth had a high signal intensity; 2) the rootstock and the bud shield had a high signal intensity, but the scion had a low signal intensity; and 3) the rootstock had a high signal intensity, but the bud shield and scion had a low signal intensity. High signal intensity was associated with bound water in live tissue and the establishment of vascular continuity between the rootstock and scion. Azosulfamide staining and destructive sectioning confirmed that vascular continuity was established when the rootstock, bud shield, and scion had a high signal intensity in images, whereas budding failure occurred when the bud shield and/or the scion had a low signal intensity. Additional trees that had wilted or weak scion growth were collected from Illinois in June 1990. Parenchyma tissue was found in the scion adjacent to the bud shield that interrupted the vascular tissue. Poor scion growth on trees from the 21 Sept. budding in Washington may be attributed to insufficient growth of rootstock and/or scion tissues at the union in the fall.


2014 ◽  
Vol 18 (1) ◽  
Author(s):  
Nasreen Mahomed ◽  
Evance Chisama ◽  
Sanjay Prabhu

The ivy sign refers to diffuse bilateral leptomeningeal enhancement on post- contrastT1-weighted magnetic resonance imaging (MRI) and increased signal intensity in bilateralsubarachnoid spaces and perivascular spaces on T2-weighted fluid attenuation inversionrecovery (FLAIR) MRI sequences in patients with moyamoya disease.


2009 ◽  
Vol 30 (4) ◽  
pp. 555-563 ◽  
Author(s):  
Yongmin Chang ◽  
Yangho Kim ◽  
Seung-Tae Woo ◽  
Hui-Jin Song ◽  
Suk Hwan Kim ◽  
...  

Neurosurgery ◽  
2008 ◽  
Vol 63 (6) ◽  
pp. 1064-1070 ◽  
Author(s):  
René van den Berg ◽  
Dennis R. Buis ◽  
Frank J. Lagerwaard ◽  
Geert J. Lycklama à Nijeholt ◽  
W. Peter Vandertop

Abstract OBJECTIVE Perinidal high-signal-intensity changes on T2-weighted magnetic resonance imaging can be seen surrounding radiosurgically treated brain arteriovenous malformations (AVM). Occasionally, these signal intensity changes develop far beyond the irradiated volume. A retrospective analysis of both the pre- and postradiosurgery magnetic resonance imaging and angiographic studies was performed to analyze the cause of these extensive perinidal white matter changes. METHODS The pre- and postradiosurgical magnetic resonance imaging and angiographic studies of 30 patients with T2 high-signal-intensity changes surrounding a brain AVM were analyzed retrospectively. Patients were divided into 2 groups on the basis of the extension of the signal intensity changes within or beyond the 10-Gy isodose area. The angiographic analysis was focused on the venous drainage pattern (deep versus superficial), venous stenosis, and the number of draining veins before and after radiosurgery. In addition, the obliteration rate was determined for the 2 subgroups. RESULTS Fourteen patients (47%) showed high-signal-intensity changes far beyond the 10-Gy isodose area. A single draining vein was more often present in these patients with extensive T2 hyperintensity signal changes than in the other group. Obliteration was achieved in 12 (88%) of 14 patients with extensive signal intensity changes, as opposed to 8 (50%) of 16 patients in the other group. CONCLUSION High-signal-intensity changes after radiosurgery for brain AVMs, far beyond the 10-Gy isodose area on T2-weighted images, are especially seen in brain AVMs draining through a single vein. The higher occlusion rate of brain AVMs under these circumstances is well appreciated.


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