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| The radiant exposure of percutaneous endoscopic transforaminal discectomy (PETD) and its influence on learning of PETD |
| (1) What is your age? | — |
| How many years do you work on medicine? | — |
| (2) What is your academic degree? |
| □ Doctor | □ Master |
| □ Bachelor | □ Associate degree |
| (3) What is the category of your hospital? |
| □ First level of public hospital | □ Second level of public hospital |
| □ Third level of public hospital | □ Fourth level of public hospital |
| □ Private hospital | |
| (4) Which department do you work on? |
| □ Orthopedics | □ Department of pain |
| □ Neurosurgery | □ Department of intervention |
| □ Department of anesthesia | |
| (5) What is your professional title? |
| □ Director | □ Deputy director |
| □ Attending | □ Resident |
| (6) For how many years had you worked on minimally invasive spinal surgery (MISS) before studying PETD? | — |
| (7) Are you familiar with PETD? |
| □ Very familiar | □ Familiar |
| □ Less familiar | |
| (8) What is your reason of learning PETD? |
| □ Clinical efficacy is not worse than open surgery | □ Highly minimal invasive and shorter time of recovery |
| □ Propaganda of associated company | □ Required by patients |
| (9) What is the difficulty of generalization of PETD do you consider? |
| □ Difficult puncture and steep learning curve | □ High recurrence rate relatively |
| □ High radiant exposure to surgeon and patients | □ Low acceptance rate |
| (10) Do you clearly know about the radiation hazard during the surgery? |
| □ Don’t know | □ Less clear |
| □ Clear | □ Very clear |
| (11) Do you worry about the radiation hazard? |
| □ Very worry about it | □ Worry about it |
| □ Little worry about it | |
| (12) Do you think there is a need to take measures to avoid radiation hazard during PETD? |
| □ No | □ Yes |
| (13) What measures will you take to avoid radiation hazard during PETD? |
| □ Lead barrier | □ Lead suit |
| □ Lead collar | □ Lead glasses |
| □ Lead cap | □ Wear a thermoluminescent tablet which could detect radiation dose |
| (14) If there is a possibility that one day you may abandon PETD during your learning about it, what do you think the reason would be? |
| □ Depression caused by repeat puncture | □ At an old age |
| □ Complaint of long surgical time from patients | □ Too much radiation exposure caused by repeat fluoroscopy |
| □ Worse clinical efficacy and sever postoperative complication | |
| (15) Do you think that there is a need for accurate equipment that could assist location and puncture during PETD for young surgeons? |
| □ Yes | □ No |
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