in this paper, we review novel techniques in the emerging field of spatiotemporal 4d pet imaging. we will discuss existing limitations in conventional dynamic pet imaging which involves independent reconstruction of dynamic pet datasets. various approaches that seek to attempt some or all of these limitations are reviewed in this work, including techniques that utilize iterative temporal smooth...

Objective(s): To investigate the diagnostic accuracy of positron emission mammography (PEM) and positron emission tomography/computed tomography (PET/CT) for small breast tumors of less than 20 mm in size.Methods: The study was conducted on a total of 100 subjects (i.e., 50 patients with pathologically proven breast cancer and 50 normal cases of medical screening). The total number of tumors wa...

Until recently PET scanning has been available only at major universities or teaching hospitals possessing the necessary resources and expertise to operate a research PET facility. Most dedicated PET centers cost several millions of dollars, and include a cyclotron, a radiochemistry laboratory to synthesize PET radiopharmaceuticals, a multicrystal dedicated PET camera, advanced computer f...

Background: To retrospectively describe imaging characteristics of liver metastases on fused FDG-PET/ MRI data sets and to compare the diagnostic accuracy of MRI and fused FDG-PET/MRI data sets for the detection of liver metastases in patients undergoing systemic anticancer treatment. Materials and Methods: 43 oncological patients (mean age: 56+/- 11 years) were investigated by FDG-PET...

برخی از گونه ‏های زنبور تریکوگراما، دارای نوعی همزیستی با باکتری Wolbachia هستندکه باعث القاء بکرماده ‏زایی در آنها می‏شود. جمعیت‌هایی این پارازیتوئید تخم آفات که نتاج ماده بیشتری تولید می‌کنند، می‌توانند بالقوه توان بالاتری برخوردار باشند. پس شناسایی یک جمعیت بومی آلوده به ولباکیا Trichogramma brassicae، بررسی‏ هایی منظور ارزیابی توانایی‌های تک‏جنسی (A) قیاس جمعیت‌‏های دوجنسی طبیعی (B) و تغذیه...