کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5661012 1407504 2017 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Is the image “right” for everyone? Introduction to the parallax effect in laparoscopic surgery
موضوعات مرتبط
علوم پزشکی و سلامت پزشکی و دندانپزشکی بیماری‌های گوارشی
پیش نمایش صفحه اول مقاله
Is the image “right” for everyone? Introduction to the parallax effect in laparoscopic surgery
چکیده انگلیسی

SummaryAim of the studyDuring minimally invasive abdominal surgery, a laparoscope is used to film the procedure, which is transmitted to a flat screen monitor. The horizontality of the image depends on the orientation in space and the visual comfort of the surgeon. Observing the screen via a lateral angle of incidence frequently results in the camera assistant making errors in determining the horizontality of the image. Thus, what is “right” for the camera assistant is not necessarily 'right' for the surgeon. We aimed to explain the impact of these errors in laparoscope manipulation, by the description of the parallax effect.Patients and methodsTo describe this phenomenon of perceptions changing depending on the angle of view, from the basis of the parallax effect, we observed the change of position and for two observers, (the surgeon and the camera assistant) seated at two different locations, using an experimental set up (i.e., photography equipment, a screen and a pelvitrainer).ResultsThe position of the camera assistant positioned at an angle of incidence of 45° from the surgeon, the observation of the screen with a lateral incidence changes the perception of the image viewed on the screen. For correcting the conflict between the subjective visual perception of the camera assistant and the actual image horizon, the camera assistant instinctively rotates the image, which can lead to an “incorrect” image, deleterious for the surgeon.ConclusionsThis article introduces a previously unexplained concept in medical literature, called the parallax effect. The parallax effect results in the camera assistant making systematic errors in determining image horizontality on the screen.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Visceral Surgery - Volume 154, Issue 1, February 2017, Pages 11-14
نویسندگان
, , , , ,