scholarly journals Four-dimensional Flow Magentic Resonance Imaging Assessment of Hemodynamics in Patients after Extracranial-Intracranial Bypass Surgery

2013 ◽  
Vol 80 (1) ◽  
pp. 2-3 ◽  
Author(s):  
Tetsuro Sekine ◽  
Yasuo Amano ◽  
Ryo Takagi ◽  
Yoshio Matsumura ◽  
Yuriko Suzuki ◽  
...  
Keyword(s):  
Bypass Surgery ◽  
Resonance Imaging ◽  
Dimensional Flow ◽  
Magentic Resonance Imaging

Tetraplegia after Coronary Artery Bypass Surgery in a Patient with Cervical Herniation

2010 ◽  
Vol 5 (2) ◽  
pp. 134-135 ◽  
Author(s):  
Alper Gorur ◽  
Numan Ali Aydemir ◽  
Nurgül Yurtseven ◽  
Mehmet Salih Bilal
Keyword(s):  
Coronary Artery ◽  
Coronary Artery Bypass ◽  
Coronary Artery Bypass Surgery ◽  
Bypass Surgery ◽  
Rare Complication ◽  
Artery Bypass ◽  
Surgical Decompression ◽  
Cervical Disc ◽  
Resonance Imaging ◽  
Cervical Magnetic Resonance Imaging

Tetraplegia is a rare complication after coronary artery bypass surgery. The authors present a case of tetraplegia after uncomplicated coronary artery bypass surgery because of cervical disc herniation. No distinct abnormality was found in the preoperative neurologic examination although the postoperative cervical magnetic resonance imaging revealed a huge hernia at C5–C6 level presenting with tetraplegia. Surgical decompression was performed on the second postoperative day of bypass surgery, and neurologic deficits gradually improved.

scholarly journals Comprehensive Evaluation of Culture-Negative Endocarditis with Use of Cardiac and 4-Dimensional-Flow Magnetic Resonance Imaging

2014 ◽  
Vol 41 (3) ◽  
pp. 351-352 ◽  
Author(s):  
Samir R. Thadani ◽  
Petter Dyverfeldt ◽  
Amy Gin ◽  
Sam Chitsaz ◽  
Rajni K. Rao ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Comprehensive Evaluation ◽  
Resonance Imaging ◽  
Dimensional Flow ◽  
Culture Negative

Magentic resonance imaging of breast masses: Comparison with mammography

2005 ◽  
Vol 15 (3) ◽  
pp. 381 ◽  
Author(s):  
KL Chakraborti ◽  
P Bahl ◽  
M Sahoo ◽  
SK Ganguly ◽  
C Oberoi
Keyword(s):  
Resonance Imaging ◽  
Breast Masses ◽  
Magentic Resonance Imaging

Ontogeny and evolution of the sound-generating structures in the infraorder Delphinida (Odontoceti: Delphinida)

2019 ◽  
Vol 128 (3) ◽  
pp. 700-724 ◽  
Author(s):  
Guilherme Frainer ◽  
Ignacio B Moreno ◽  
Nathalia Serpa ◽  
Anders Galatius ◽  
Dirk Wiedermann ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Postnatal Development ◽  
Histological Examination ◽  
Sound Generation ◽  
Resonance Imaging ◽  
3D Slicer ◽  
Perinatal Development ◽  
Air Sacs ◽  
Magentic Resonance Imaging ◽  
Resonance Imaging Scan

AbstractThe ontogeny of the structures involved in sound generation and modulation in dolphins was investigated through a comparison of the soft nasal structures of foetal, perinatal, neonatal and adult specimens of Pontoporiidae, Phocoenidae and Delphinidae. Foetal samples were sectioned at 10 µm in the saggital and coronal planes, and stained for histological examination. Computed tomography and magentic resonance imaging scan series were combined with new data to represent the ontogenetic stages of the three groups. The images were analysed in 3D-Slicer to characterize the general head topography. The origins of the melon and the vestibular air sac were detected between Carnegie stages C16 and F22. The three groups analysed showed distinct formation of the nasal plug and nasal plug muscles, mainly with regard to the loss of fat pathways (or their maintenance in Pontoporiidae) and the development of the nasal plug muscles on both sides (during perinatal development of Phocoenidae) or just on the left side (during postnatal development in Delphinidae). Broadband vocalizing delphinidans might have evolved under heterochronic events acting on the formation of sound-generating structures such as the rostrum and vestibular air sacs, and on the transformation of the branches of the melon, probably leading to a reduced directionality of the sonar beam.

scholarly journals Mechanical haemolytic anaemia assessed with four-dimensional flow cardiac magnetic resonance

2019 ◽  
Vol 56 (4) ◽  
pp. 813-814
Author(s):  
Wataru Uchida ◽  
Yoshiyuki Tokuda ◽  
Yasuo Takehara ◽  
Akihiko Usui
Keyword(s):  
Magnetic Resonance ◽  
Aortic Valve ◽  
Haemolytic Anaemia ◽  
Cardiac Cycle ◽  
Prosthetic Graft ◽  
Ascending Aorta ◽  
Resonance Imaging ◽  
Aortic Arch Replacement ◽  
Dimensional Flow ◽  
Total Aortic Arch Replacement

Abstract A 66-year-old woman developed marked haemolytic anaemia 2 years after total aortic arch replacement using a branched Dacron graft. Echocardiography confirmed bicuspid aortic valve stenosis. A four-dimensional flow magnetic resonance imaging revealed a jet flow arising from the aortic valve along with the vortex and turbulent flow inside the kinked prosthetic graft at the ascending aorta. She underwent a reoperation to replace the aortic valve and correct the kinking. The estimated energy loss after intervention was relieved to 2.9 mJ/cardiac cycle from 4.3 mJ/cardiac cycle before intervention. The patient’s anaemia resolved immediately after the reoperation.

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