Three-dimensional image reconstruction in capsule endoscopy

To date,limited research has been carried out in developing methods and materials that offer three-dimensional(3-D) representation of the digestive tract.In the field of capsule endoscopy(CE),hardware approaches have been developed that provide real time both 3-D information and texture using an infrared projector and a complementary metal oxide semiconductor camera.The major drawbacks of this system are its size,power consumption and packaging issues.A software approach to approximate a 3-D representation of digestive tract surface utilising current CE technology has been proposed.The algorithm utilizes the Shape from Shading technique and seem to provide promising results for polypoid structures and angioectasias.Further clinical evaluation is currently under way.

Using Materialise’s interactive medical image control system to reconstruct a model of a patient with rectal cancer and situs inversus totalis: A case report

BACKGROUND Situs inversus totalis(SIT)is a rare congenital anomaly that refers to a completely reversed location of abdominal and thoracic organs.An extremely small number of patients with this condition,especially those with rectal neoplasms,have been reported.Surgery in these patients is technically challenging.Therefore,we reconstructed a three-dimensional(3D)digital model with the Materialise’s interactive medical image control system(Mimics)as a guide for laparoscopic resection.CASE SUMMARY We report the case of a 68-year-old woman with rectal neoplasms and SIT diagnosed by electronic colonoscopy biopsy and enhanced computed tomography(CT),which showed that there was a soft tissue mass protruding into the lumen in the lower rectal segment,a lesion that involved the serosal layer,multiple enlarged peripheral lymph nodes,and visceral situs abnormalities.Based on the CT images,we reconstructed a 3D model with Mimics to assist with our surgical planning.Then,we performed laparoscopyassisted radical resection of the rectal neoplasms and total excision of the lesion.Adjuvant chemotherapy with the XELOX regimen(oxaliplatin 150 mg,D1+Xeloda 1.0 g,Bid,D1-14)was initiated 1 mo after the operation.The patient recovered well after surgery,and her physical condition remained stable.CONCLUSION Preoperative 3D reconstruction of the imaging results could help reduce the unknown risks during surgery caused by anatomical abnormalities and improvethe perioperative safety for patients.

Clinical application of 3D reconstruction in pancreatic surgery:a narrative review

Progress in medicine requires not only innovation and development in the medical field but also the integration of the technology of other fields into the medical field.As an important technological advancement,three-dimensional(3D)reconstruction transforms traditional two-dimensional images into 3D images that are more consistent with the physiological habits of human eyes.It has been applied to the bones,heart,liver,and maxillofacial area,promoting the progress of medical technology and surgeons.This paper introduces the progress of 3D reconstruction technology in the clinical application of pancreatic surgery,from the preoperative,intraoperative,and postoperative perspectives,as well as the education of young surgeons.It also puts forward new ideas for the further development of pancreatic surgery.