Literature DB >> 12637306

Black holes on MR images of the brain of patients with Björk-Shiley heart valves: additional observation in three cases.

Maarten J van Gorp1, Bas A J M de Mol, Chris J G Bakker, Yolanda van der Graaf, Willem P T M Mali.   

Abstract

We report the cases of three patients with Björk-Shiley convexo-concave heart valves with unusual black holes shown on cerebral MR images. For two patients, these findings were associated with fracture of the Björk-Shiley convexo-concave heart valve, and for the third, with worn surfaces on the heart valve. Susceptibility changes shown by MR imaging suggest the possibility that these black holes may be associated with microscopic metallic particles, although, the exact cause of these black holes remains undetermined.

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Year:  2003        PMID： 12637306      PMCID： PMC7973637     

Source DB:  PubMed          Journal:  AJNR Am J Neuroradiol        ISSN： 0195-6108            Impact factor:   3.825


  13 in total

1.  Multifocal hypointense cerebral lesions on gradient-echo MR are associated with chronic hypertension.

Authors:  S Chan; K Kartha; S S Yoon; D W Desmond; S K Hilal
Journal:  AJNR Am J Neuroradiol       Date:  1996 Nov-Dec       Impact factor: 3.825

2.  Multifocal brain MRI artifacts secondary to embolic metal fragments.

Authors:  D M Wingerchuk; K N Krecke; J R Fulgham
Journal:  Neurology       Date:  1997-11       Impact factor: 9.910

3.  Artifacts in MR imaging caused by small quantities of powdered iron.

Authors:  A Alanen; S Bondestam; M Komu
Journal:  Acta Radiol       Date:  1995-01       Impact factor: 1.990

4.  Susceptibility artefacts in NMR imaging.

Authors:  K M Lüdeke; P Röschmann; R Tischler
Journal:  Magn Reson Imaging       Date:  1985       Impact factor: 2.546

5.  MRI detection of new hemorrhages: potential marker of progression in cerebral amyloid angiopathy.

Authors:  S M Greenberg; H C O'Donnell; P W Schaefer; E Kraft
Journal:  Neurology       Date:  1999-09-22       Impact factor: 9.910

6.  Small chronic hemorrhages and ischemic lesions in association with spontaneous intracerebral hematomas.

Authors:  A Tanaka; Y Ueno; Y Nakayama; K Takano; S Takebayashi
Journal:  Stroke       Date:  1999-08       Impact factor: 7.914

7.  Non-destructive assessment of 62 Dutch Björk-Shiley convexo-concave heart valves.

Authors:  B A de Mol; P J Overkamp; G L van Gaalen; A E Becker
Journal:  Eur J Cardiothorac Surg       Date:  1997-04       Impact factor: 4.191

8.  Brain microemboli during cardiac surgery or aortography.

Authors:  D M Moody; M A Bell; V R Challa; W E Johnston; D S Prough
Journal:  Ann Neurol       Date:  1990-10       Impact factor: 10.422

9.  Histopathologic analysis of foci of signal loss on gradient-echo T2*-weighted MR images in patients with spontaneous intracerebral hemorrhage: evidence of microangiopathy-related microbleeds.

Authors:  F Fazekas; R Kleinert; G Roob; G Kleinert; P Kapeller; R Schmidt; H P Hartung
Journal:  AJNR Am J Neuroradiol       Date:  1999-04       Impact factor: 3.825

10.  Single-leg strut fractures in explanted Björk-Shiley valves.

Authors:  B A de Mol; M Kallewaard; R B McLellan; L A van Herwerden; J J Defauw; Y van der Graaf
Journal:  Lancet       Date:  1994-01-01       Impact factor: 79.321
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  1 in total

1.  Imaging and clinical characteristics of children with multiple foci of microsusceptibility changes in the brain on susceptibility-weighted MRI.

Authors:  Tetsu Niwa; Noriko Aida; Taro Takahara; Thomas C Kwee; Kazutoshi Fujita; Ayako Shishikura; Daiki Miyata; Tomio Inoue
Journal:  Pediatr Radiol       Date:  2010-04-28
  1 in total

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