Introduction: Meningioma is usually a benign brain tumor, but sometimes with aggressive course. The aim of this study was to assess the ability of 201Tl Brain SPECT to differentiate the pathologic grade of meningioma preoperatively. Methods: Thirty lesions in 28 patients were evaluated in this study. Early (20 minutes) and late (3 hours) brain SPECT images were performed and early u...

Planar ventilation-perfusion (V/Q) scanning is often used to investigate pulmonary embolism; however, it has well-recognized limitations. SPECT overcomes many of these through its ability to generate 3-dimensional imaging data. V/Q SPECT has higher sensitivity, specificity, and accuracy than planar imaging and a lower indeterminate rate. SPECT allows for new ways to display and analyze data, su...

Single Photon Emission Computed Tomography (SPECT) provides a potential to perform in vivo quantification of the radioactivity and dose distributions in the process of evaluating radiopharmaceuticals. The inherent modest resolution in SPECT impedes the potential of accurate quantification. Previously, we investigated a joint estimation approach for combining SPECT functional information with hi...

We studied the radioisotope iodine-123-iodoamphetamine ([123I]IMP) and its performance in single-photon emission computed tomographic (SPECT) studies of cerebral blood flow (CBF). In seven normal volunteers, IMP/SPECT CBF measurements were calculated using a two-compartment model and were compared with the results of CBF measurements utilizing (O15)-H2O and positron emission tomography (PET). C...

BACKGROUND: Single photon emission computed tomography (SPECT) following injection of radiotracer during a seizure is known as ictal SPECT. Comparison of an ictal SPECT study to a baseline or interictal study can aid identification of a seizure focus. CASE PRESENTATION: A young woman with encephalitis and refractory seizures underwent brain SPECT during a period of frequent seizure-like episode...

SPECT is a rapidly changing field, and the past several years have produced new developments in both hardware technology and image-processing algorithms. At the component level there have been improvements in scintillators and photon transducers as well as a greater availability of semiconductor technology. These devices permit the fabrication of smaller and more compact systems that can be cus...

Purpose: To study the possibility of using SPECT with a new radiopharmaceutical 99mTc-1-thio-D-glucose (99mTc-TG) for staging lymphomas. Material and methods: The included 53 patients verified diagnosis lymphoma (38 people – main group) adenopathy non-tumor origin (15 - comparison group). All group underwent 99mTc-TG SPECT, CT chest, abdominal organs all interested areas, ultrasound, biopsy fol...

Mục tiêu của nghiên cứu: Ứng dụng công nghệ xử lý ảnh xSPECT trong ghi hình phóng xạ SPECT/CT. Đối tượng và phương pháp Máy SPECT/CT hãng Siemens, Đức. Phàn mềm xSPECT; Phan-tom nước; Ghi với thuốc 99mTc-MDP trên bệnh nhân ung thư biểu mô tuyến tiền liệt. Kết quả bốn tái tạo: Quant (xQ); Xương™ (xB); Flash 3D (F3D); OSEM, cho thấy lập ma trận hệ thống chính xác hơn là lược đồ cập nhật. định lượ...

Abstract Funding Acknowledgements Type of funding sources: None. Introduction Data supporting the role stress test myocardial perfusion imaging (MPI) before non-cardiac surgery (NCS) are sparse and out date. In particular, there is no specific evidence on use cardiac magnetic resonance (sCMR) in this setting. The aim present study was to evaluate impact MPI with sCMR single-photon emission comp...