himanshu pendse, Abstract Co-Author: Nothing to Disclose

Suyash Kulkarni, Abstract Co-Author: Nothing to Disclose

Ashwin M. Polnaya MD, Abstract Co-Author: Nothing to Disclose

Nitin Sudhakar Shetty MBBS, MD, Abstract Co-Author: Nothing to Disclose

KETAN GAIKWAD, Abstract Co-Author: Nothing to Disclose

Kunal Bharat Gala MBBS, MD, Presenter: Nothing to Disclose

Meenakshi Haresh Thakur MD, Abstract Co-Author: Nothing to Disclose

To explore the role of robotic arm in CT Guided Biopsies. To assess the accuracy of CT guided biopsy using a robotic device in targeting a lesion  

50 patients were analyzed on whom robotic device was used to perform CT Guided biopsy. MAXIO Robotic Arm and Navigation Software (Perfint Pvt Ltd., India) was used in this study. Informed consent was taken. Plain and post-contrast CT study of the required area was performed. This was fed in the navigation software of the robotic arm. The trajectory of the needle was planned on the software. Robotic arm was programmed to align at the desired point of entry at the required angle and depth. The biopsy was performed along this guided trajectory. Later, the image of the actual trajectory taken by the needle and the planned trajectory were superimposed. The difference in the entry point and actual point reached in the lesion by the needle on the actual biopsy image and planned image by the software is compared. This error is measured in millimeters. This is then analyzed for its statistical significance  

50 patients were analyzed. There were 30 males and 20 females. The mean age was 55.46 years. The mean size of the lesion was 46 mm. Out of 47 patients, 26 were lung masses, 11 were pelvic masses, 2 were bone lesions, 5 were mediastinal masses, 1 each of liver, pancreatic and gastric lesions and 3 paravertebral masses. Effectiveness of Needle Placement: CT biopsy was technically possible in 47 out of 50 patients. Target off site >5mm is seen in 3 out of 47 patients leading to accuracy of 93%. The number of re-positioning were 1.46 per patient ranging from 1-3 per patient. The number of check scans were 1.5/patient.  

Percutaneous image guided procedure with use of a robotic arm entails various advantages over free hand techniques with improvement in accuracy and fewer number of check scans. Robotic arms may be used to target deep seated lesions which need multiple repositioning with free hand techniques. Patient motion is a major detrimental factor in execution of biopsy using robotic arm.  

Robotic assisted biopsies can improve accuracy, decrease the number of check scans and thus indirectly decreasing the radiation dose and time required for the procedure

pendse, h, Kulkarni, S, Polnaya, A, Shetty, N, GAIKWAD, K, Gala, K, Thakur, M, Role of Robotic Arm in CT Guided Biopsies.  Radiological Society of North America 2014 Scientific Assembly and Annual Meeting, - ,Chicago IL. http://archive.rsna.org/2014/14045807.html