Assessment of image co-registration accuracy for frameless gamma knife surgery
| العنوان: | Assessment of image co-registration accuracy for frameless gamma knife surgery |
|---|---|
| المؤلفون: | Dong Gyu Kim, Kook Jin Chun, Sun Ha Paek, Jin Wook Kim, Yong Kyun Kim, Hyun Tai Chung, Tae Hoon Kim, Jeong Hun Kim |
| المصدر: | PLoS ONE PLoS ONE, Vol 13, Iss 3, p e0193809 (2018) |
| بيانات النشر: | Public Library of Science (PLoS), 2018. |
| سنة النشر: | 2018 |
| مصطلحات موضوعية: | Models, Anatomic, Cone beam computed tomography, Computer science, medicine.medical_treatment, Coordinate system, lcsh:Medicine, Stereotactic Radiosurgery, Gamma knife radiosurgery, Computed tomography, Diagnostic Radiology, 030218 nuclear medicine & medical imaging, 0302 clinical medicine, Medicine and Health Sciences, Magnetic Resonance, lcsh:Science, Tomography, Surgical and invasive medical procedures, Musculoskeletal System, Multidisciplinary, medicine.diagnostic_test, Phantoms, Imaging, Radiology and Imaging, Physics, Magnetism, Brain, Cone-Beam Computed Tomography, Condensed Matter Physics, Magnetic Resonance Imaging, Nervous system procedures, medicine.anatomical_structure, Physical Sciences, Anthropomorphic phantom, Anatomy, Research Article, Gamma-knife surgery, Imaging Techniques, Neuroimaging, Radiosurgery, Research and Analysis Methods, Imaging phantom, 03 medical and health sciences, Imaging, Three-Dimensional, Fiducial Markers, Diagnostic Medicine, medicine, Humans, Irradiation, Skeleton, business.industry, lcsh:R, Skull, Biology and Life Sciences, Magnetic resonance imaging, Gamma Knife radiosurgery, Computed Axial Tomography, lcsh:Q, Fiducial marker, Nuclear medicine, business, Head, 030217 neurology & neurosurgery, Neuroscience |
| الوصف: | Image co-registration is used in frameless gamma knife radiosurgery (GKSRS) to assign a stereotactic coordinate system and verify patient setup before irradiation. The accuracy of co-registration with cone beam computed tomography (CBCT) images of a Gamma Knife IconTM (GK Icon) was assessed, and the effects of the region of co-registration (ROC) were studied. CBCT-to-CBCT co-registration is used for patient setup verification, and its accuracy was examined by co-registering CBCT images taken at various configurations with a reference CBCT series. The accuracy of stereotactic coordinate assignment was investigated by co-registering stereotactic CT images with CBCT images taken at various configurations. An anthropomorphic phantom was used, and the coordinates of fifteen landmarks inside the phantom were measured. The co-registration accuracy between stereotactic magnetic resonance (MR) and CBCT images was evaluated using images from forty-one patients. The positions of the anterior and posterior commissures were measured in both a fiducial marker-based system and a co-registered system. To assess the effects of MR image distortions, co-registration was performed with four different ranges, and the accuracy of the results was compared. Co-registration between CBCT images gave a mean three-dimensional deviation of 0.2 ± 0.1 mm. The co-registration of stereotactic CT images with CBCT images produced a mean deviation of 0.5 ± 0.2 mm. The co-registration of MR images with CBCT images resulted in the smallest three-dimensional difference (0.8 ± 0.3 mm) when a co-registration region covering the skull base area was applied. The image co-registration errors in frameless GKSRS were similar to the imaging errors of frame-based GKSRS. The lower portion of the patient's head, including the base of the skull, is recommended for the ROC. |
| تدمد: | 1932-6203 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cb1ed704485edfa517332ebfb6f74bc4Test https://doi.org/10.1371/journal.pone.0193809Test |
| حقوق: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....cb1ed704485edfa517332ebfb6f74bc4 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 19326203 |
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