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The International Journal on Orbital Disorders, Oculoplastic and Lacrimal Surgery
Volume 3, 1984 - Issue 4
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Original Article

Quantitative evaluation of canalicular flow using lacrimal scintillography

Jed Rab1novitch Departments of Ophthalmology and Nuclear Medicine, Sunnybrook Medical Centre, Toronto, Ontario, Canada
,
Jeffrey J. Hurwitz Departments of Ophthalmology and Nuclear Medicine, Sunnybrook Medical Centre, Toronto, Ontario, Canada
&
Hyacinth Chin-Sang Departments of Ophthalmology and Nuclear Medicine, Sunnybrook Medical Centre, Toronto, Ontario, Canada
Pages 263-266 | Published online: 08 Jul 2009
 
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Abstract

Lacrimal scintillography is now a recognized technique for the evaluation of lacrimal excretory physiology and pathology. Computer interfacing makes it possible to measure the time required for half the radioactivity to disappear from an area (Tl/2 value). These techniques have been used by several authors to quantitate normal and abnormal lacrimal outflow (Hurwitz et al, 1975; Doucet et al., 1982).

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