What is operator-dependent?
I am writing paper about liver transplantation.
I came across operator dependent. Can you help me understand the structure?
This is the definition below. I got from Wikipedia it. I got it for my website. I still need better definition preferably good grammar but I don’t really understand it.
Adj. a characteristic of esoteric forms of faith healing cannot be verified scientifically because the healing process depends largely on the special skills of the practitioner that preclude systemic investigation.
In sentence.
The measurement of portal vein flow has typically been accomplished through a Doppler effect-based ultrasound . What is the technique to precisely measure the flow of portal veins?
Does your definition of operator dependent refer to the function of an operator without effect on a modern med center?
Operator dependent refers to variation in results due to medical technologists use of diagnostic equipment and technology. Is it important for the clinician to be aware of such operator dependent variation? Since the deviation from the expected (normal) outcome may be etiological (and thus due to a disease process), how can you calculate how much deviation is caused by the technique used by the diagnostic technician?
Medical imaging, EEG’s and EKG’s are subject to operator dependent results. The abstract of this paper describes operator dependent variability in diagnostic imagery of the heart :
The purpose of this study was to evaluate variability in the quantification of myocardial perfusion images obtained by a group of experienced operators using two widely used programs…The large variability] may influence the clinical interpretation and cause false conclusions
In the prior example, the operator was an experienced technician. The operator may be physicians, if yes. In this example, the operators are radiologists (all M.D.’s): We
sought to assess the reproducibility of size measurements of small lung nodules examined with … Three radiologists measured volume and diameter of 20 phantom nodules and 37 lung nodules…. Operator-dependent variability of size measurements of small nodules is not negligible. Should be considered in lung cancer screening studies.
Connotation of improper technique or lack of skill is not necessarily associated with operator-dependence results. Sometimes it’s, so too will the usability design of the testing devices itself. This study compared the effectiveness of mammography versus ultrasound and MRI. and found that ultrasound had the same rate of false negatives due to operator-dependent error as the other two methods.
