PURPOSE to compare lesion detectability of I-123 MIBG scintigraphy with that of high-dose I-131 MIBG and to evaluate incremental benefit of SPECT/CT over planar image for the detection and localization of the lesions in patients with I-131 MIBG therapy for malignant pheochromocytoma/paraganglioma and neuroblastoma. MATERIALS AND METHODS we retrospectively investigated 16 patients with maligna...

The Japanese Society of Nuclear Cardiology(JSNC)has given Technical Award for outstanding technologists since 2012 to promote nuclear cardiology research. Yasuyuki Takahashi won the 3rd JSNC Technical Award. This issue of Annals of Nuclear Cardiology contains his review article related to his work wining the prize. Masao Miyagawa, his colleague, also presented another review article concerning ...

Myocardial perfusion SPECT imaging accounts for well over 90% of all myocardial perfusion imaging performed in the United States today. Although clearly superior to the traditional planar technique in terms of image contrast and consequent diagnostic and prognostic yield, the SPECT approach also involves additional acquisition and processing steps. This article concisely describes the entire te...

In this paper we present a new approach for quantitative analysis of myocardial perfusion SPECT studies and assessment of myocardium defect regions. Myocardial perfusion SPECT is widely used in the evaluation of post-infarction patients, in order to foretell the patients’ future conditions. Our approach is based on the use of polar maps, a two-dimensional plot of the reconstructed volume from t...

objective(s): in spect, the sinogram contains scatter and lack of attenuated counts that degrade the reconstructed image quality and quantity. many techniques for attenuation and scatter correction have been proposed. an acceptable method of correction is to incorporate effects into an iterative statistical reconstruction. here, we propose new maximum likelihood expectation maximization (mlem) ...

UNLABELLED Anatomical localization requires establishing an anatomical space within the image matrix. We developed a fast, fully automated method to establish the image orientation for 99mTc-ethylcysteinate dimer (ECD) brain SPECT images. METHODS The image orientation of ECD brain SPECT images was established in four stages. First, the brain surface was edge-detected as an isosurface at an ad...

OBJECTIVE Single photon emission computed tomography (SPECT) images provide many details of the anatomical structure. Also about bone scintigraphy, there are many reports of the improvement of diagnosis by SPECT images. Although SPECT is useful, it requires much time. So to perform SPECT for all cases is difficult in the clinical situation. Recently, due to technical improvements in gamma camer...

Ongoing efforts at our laboratory have targeted the development of techniques for fusing medical imagery of various modalities (i.e. MRI, CT, PET, SPECT, etc.) into single image products. Past results have demonstrated the potential for user performance improvements and workload reduction. While these are positive results, a need exists to address the threedimensional nature of most medical ima...

In this paper we describe a statistical model for the observation of labeled points in gated cardiac single photon emission computed tomography (SPECT) images. The model has two major parts: one based on shape correspondence between the image for evaluation and a reference image, and a second based on the match in image features. While the statistical deformation model is applicable to a broad ...

BACKGROUND Dosimetry in radionuclide therapy has the potential to allow for a treatment tailored to the individual patient. One therapeutic radiopharmaceutical where patient-specific dosimetry is feasible is 177Lu-DOTATATE, used for the treatment of neuroendocrine tumours. The emission of gamma photons by 177Lu allows for imaging with SPECT (single photon emission computed tomography). One impo...