Results 91 to 100 of about 1,160 (144)
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Keyhole Deformity: A Case Series
Journal of Gastrointestinal Surgery, 2008Keyhole deformity is frequently encountered after posterior internal sphincterotomy but may be observed after lateral internal sphincterotomy or in patients without any history of previous anal surgery. The aim of the present study is to emphasize the surgical significance of this entity and discuss the possible strategies in the treatment of the ...
BOSTANCI, HASAN +4 more
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Diseases of the Colon & Rectum, 1985
The purpose of this paper is to show whether there is a keyhole deformity, its surgical significance, and how often it occurred following surgery for ulcer-in-ano. To do this, a retrospective study, over a 16-year period, of all patients admitted to the Ferguson Clinic with chief complaints of anal incontinence was undertaken. Of this group of patients,
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The purpose of this paper is to show whether there is a keyhole deformity, its surgical significance, and how often it occurred following surgery for ulcer-in-ano. To do this, a retrospective study, over a 16-year period, of all patients admitted to the Ferguson Clinic with chief complaints of anal incontinence was undertaken. Of this group of patients,
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Neuroradiology
Keyhole aqueduct syndrome is a rare progressive neurodegenerative disorder describing a unique set of neuro-ophthalmologic, neuroimaging, and histopathological findings on autopsy. A midline mesencephalic cleft communicating with the cerebral aqueduct resembling syrinx is seen on imaging and histopathology. There are 9 cases published in the literature.
Imad Zak, Shahram Hadidchi, Philip Ross
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Keyhole aqueduct syndrome is a rare progressive neurodegenerative disorder describing a unique set of neuro-ophthalmologic, neuroimaging, and histopathological findings on autopsy. A midline mesencephalic cleft communicating with the cerebral aqueduct resembling syrinx is seen on imaging and histopathology. There are 9 cases published in the literature.
Imad Zak, Shahram Hadidchi, Philip Ross
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ICALEO '97: Proceedings of the Laser Materials Processing Conference, 1997
The absorption of the laser energy in the keyhole is a function of the laser frequency (or wavelength), the chemistry of the material being welded and the temperature of the vapor. The absorption greatly affects the shape of the fusion zone as well as the integrity and efficiency of the laser welding process.
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The absorption of the laser energy in the keyhole is a function of the laser frequency (or wavelength), the chemistry of the material being welded and the temperature of the vapor. The absorption greatly affects the shape of the fusion zone as well as the integrity and efficiency of the laser welding process.
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Journal of the Acoustical Society of America, 2016
The Aloha Cabled Observatory (ACO) is located on the seafloor about 100 km north of O‘ahu at 4800 m depth. Seismoacoustic T-waves generated by earthquakes in the South Pacific from Tonga-Kermadec to the Solomon Islands travel 40-70°Δ, passing through an acoustic keyhole—the Ka'ie'ie Waho channel—between O‘ahu and Kaua‘i before reaching ACO. In contrast
Rhett Butler +2 more
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The Aloha Cabled Observatory (ACO) is located on the seafloor about 100 km north of O‘ahu at 4800 m depth. Seismoacoustic T-waves generated by earthquakes in the South Pacific from Tonga-Kermadec to the Solomon Islands travel 40-70°Δ, passing through an acoustic keyhole—the Ka'ie'ie Waho channel—between O‘ahu and Kaua‘i before reaching ACO. In contrast
Rhett Butler +2 more
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Nature Reviews Cancer, 2004
A large-scale study has shown that laparoscopic or 'keyhole' surgery for colon cancer is as safe and effective as conventional surgery, dispelling fears about a link with increased tumour recurrence.
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A large-scale study has shown that laparoscopic or 'keyhole' surgery for colon cancer is as safe and effective as conventional surgery, dispelling fears about a link with increased tumour recurrence.
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Interaction of the keyhole and weld pool in laser keyhole welding
Journal of Laser Applications, 2002There are several components to the motion of the liquid material in the weld pool in laser keyhole welding. Observations have shown not only that it moves in the plane perpendicular to the axis of the laser, but also that it moves parallel to the laser beam.
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Metallurgical and Materials Transactions B, 1995
The size and temperatures of the keyhole have been calculated through the thickness of the plate being welded. The temperature calculations are based on a critical intensity and the power loss resulting from vaporization. The evaporative power loss is set equal to the Gaussian power density, which is used to represent the laser beam.
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The size and temperatures of the keyhole have been calculated through the thickness of the plate being welded. The temperature calculations are based on a critical intensity and the power loss resulting from vaporization. The evaporative power loss is set equal to the Gaussian power density, which is used to represent the laser beam.
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Journal of Visual Communication in Medicine, 2011
Colin, Dobbyne, Liam F, Horgan
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Colin, Dobbyne, Liam F, Horgan
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The Health service journal, 1993
Surgically speaking, history is likely to dub the 1990s as 'the laparoscopic years', as changes in surgical practice cause one of the biggest revolutions in our hospitals since the arrival of general anaesthesia. As a result, surgeons are having to re-examine their skills and training, while managers need to update their infrastructure for budgets and ...
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Surgically speaking, history is likely to dub the 1990s as 'the laparoscopic years', as changes in surgical practice cause one of the biggest revolutions in our hospitals since the arrival of general anaesthesia. As a result, surgeons are having to re-examine their skills and training, while managers need to update their infrastructure for budgets and ...
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