Provide the operator with a convenient location which has with the screen in front of the operator. She or he should wear comfortable clothing to facilitate a procedure that may eventually be delayed for several hours and which may become tiring Figures 7 and 8. Different types of needle knives need to be used.
Posibilitar una ubicación cómoda del operador, con la pantalla frente a él y el uso de ropa cómoda, para facilitar el procedimiento que puede eventualmente demorarse varias horas y ser fatigante figuras 7 y 8.