Method for the evaluation of US perfusion for brain tumor surgery
نویسندگان
چکیده
This paper presents a method to evaluate intraoperative ultrasound (iUS) perfusion imaging of brain tumors acquired during resection surgeries. It consists in comparing the iUS perfusion with the standard preoperative MR perfusion. In a first step the iUS and MR perfusion data are represented in a common frame with the same pixel size. This is performed using image registration methods to achieve a pixel-wise correspondence between both data sets. In a second step the perfusion data are analyzed and visualized with the SimVis framework. It is possible to select region of interests of the tumor, such as the margins or the center, and to perform a region-based comparison between the iUS and MR perfusion data. The pipeline is demonstrated for one representative surgical case.
منابع مشابه
The role of relative cerebral blood volume obtained from Perfusion Weighted Imaging-MRI in glioma tumor grading before surgery
Introduction: Glioma is the most common type of brain malignancy among adults. Treatment for this type of tumor involves surgery, radiotherapy, and in higher grades, including chemotherapy. The precise grading of the tumor is critical for treatment planning and prognosis determining. Considering the possibility of problems such as errors in tissue sampling during surgery, as we...
متن کاملEvaluation of demographic, clinical characteristics and type of hydrocephaly before and after surgical interventions in patients with intra ventricular brain tumor surgery
Introduction: Hydrocephaly is a common complication of intra ventricular brain tumors. The aim of this study was to determine, demographic and clinical features and type of hydrocephaly before and after surgical interventions in patients with intra ventricular brain tumor surgery. Material and methods: In a cross-sectional study, 100 patients with intra ventricular brain tumors who were candid...
متن کاملبررسی اثر اولتراسوند بر میزان محافظت از پیوستگی سد خونی- مغزی در مدل امبولیک سکته مغزی
Background: Ultrasound (US) has been used in neuroprotection after cerebral ischemia, however the mechanism of action remains unclearly. We have previously shown the protective effect of ultrasound on infarction volume and brain edema in ischemic brain injured at normothermic condition. Ultrasound may also amplify the effect of fibrinolytic medications in thrombolysis process .We have also show...
متن کاملCompensation of brain shift during surgery using non-rigid registration of MR and ultrasound images
Background: Surgery and accurate removal of the brain tumor in the operating room and after opening the scalp is one of the major challenges for neurosurgeons due to the removal of skull pressure and displacement and deformation of the brain tissue. This displacement of the brain changes the location of the tumor relative to the MR image taken preoperatively. Methods: This study, which is done...
متن کاملA pictorial essay on brain perfusion SPECT in various neuro-psychiatric disorders and intoxication: Though practical, it is not very commonly used
Brain single-photon emission computerized tomography (SPECT), in particular, with perfusion agents or with neuroreceptor imaging radiopharmaceuticals, is rapidly becoming a clinical tool in many neurologic and psychiatric conditions. This imaging modality has been used for diagnosis, prognosis assessment, evaluation of response to therapy, risk stratification, detection of benign vs. malignant ...
متن کامل