Introduction:Brain imaging with F-18 fluorodeoxyglucose (18F-FDG) positron ‎emission tomography or Tc-99m hexamethylpropyleneamine oxime (‎99mTc-HMPAO) SPECT is widely used for the evaluation of Alzheimer's ‎dementia (AD); we aim to assess superiority of one method over the ‎other. Methods: Twenty four patients with clinical diagnosi...

PURPOSE We aimed to assess the role of single photon emission computed tomography-computed tomography (SPECT-CT) for characterizing isolated vertebral lesions observed by bone scintigraphy compared to planar scintigraphy, SPECT, and CT, and to evaluate the impact of SPECT-CT on patient management. MATERIALS AND METHODS Data from 99 patients (mean age, 52.4±18.9 years; females, 58.5%) with 108...

INTRODUCTION Early diagnosis of spinal metastases is of key importance in further therapeutic management. OBJECTIVES The aim of the study was to assess the reliability of single-photon emission computed tomography (SPECT) or SPECT and computed tomography (SPECT/CT) in the diagnosis of solitary hot nodules in the spine identified by scintigraphy. PATIENTS AND METHODS In this retrospective st...

introduction quality control is an important phenomenon in nuclear medicine imaging. a jaszczak spect phantom provides consistent performance information for any spect or pet system. this article describes the simulation of a jaszczak phantom and creating an executable phantom file for comparing assessment of spect cameras using simind monte carlo simulation program which is well-established fo...

Introduction: Hemangiomas are the most frequent benign tumors of the liver and detecting them from metastasis or other malignant hepatic tumors is of outmost importance. 99mTc- RBC scan is highly specific and is the method of choice for this differentiation. This scintigraphy is performed in Planar and SPECT modes. These two procedures are in agreement most of the times, however since SPE...

This article examines whether a principal prefers to hire a fair or a selfish agent. A fair agent cares to some extent for the well-being of other people and thus he also cares for the principal. Therefore, if the agent performs solitary work, the principal is always better off to hire a fair agent. However, we show that when a third party with conflicting interests is introduced, it may be adv...

In the context of a standard equilibrium matching framework, this paper shows how a duration dependent unemployment insurance (UI) system stabilises unemployment levels over the business cycle. It establishes that reentitlement effects induced by a finite duration UI program generate intertemporal tranfers from firms that hire in future booms to firms that hire in current recessions. These tran...

OBJECTIVE To assess the clinical utility of SPECT/ CT in subjects with endocrine and neuroendocrine tumors compared to SPECT alone. MATERIAL AND METHODS 48 subjects (31 women;17 men; mean age 54±11) with clinical suspicion or diagnosis of endocrine and neuroendocrine tumor had 50 SPECT/CT scans (32 Tc-99m MIBI, 5 post treatment I-131, 8 In-111 Pentetreotide, and 5 I-123 MIBG). SPECT alone fin...

BACKGROUND The aim of this study is to assess whether ultra-fast acquisition SPECT/CT (UF-SPECT/CT) can replace standard SPECT/CT (std-SPECT/CT) as "add-on" to whole-body bone scintigraphy (WB-BS) for the investigation of bone metastases. Consecutive cancer patients referred for WB-BS who underwent SPECT/CT in addition to WB-BS were included. Std-SPECT, UF-SPECT, and low-dose CT were performed ...