PURPOSE To locate spoiled gradient-echo functional MR signal changes in relation to brain parenchyma. METHODS The region of the primary visual cortex was evaluated using functional MR and H2 15O positron emission tomography in each of six male subjects who were being visually stimulated by means of red light-emitting diode flash goggles. RESULTS The positron emission tomography technique de...

An inflammatory pseudotumor (IPT) is a rare benign lesion, characterized by nonneoplastic proliferation of inflammatory cells and presence of intermingling collagen fibers. IPT commonly occurs in the lungs and orbita, while an intraspinal IPT is extremely rare. IPT can mimic both clinically and radiologically malignant processes, and making a definitive preoperative diagnosis is often difficult...

[18F]KF, considered as a reference standard for positron emission tomography of the skeletal system, was produced by the bombardment of enriched water ([18O]H2O>95%) with high energy protons in NRCAM cyclotron. After the extraction of fluoride from enriched water as KF, and passing it through microbial filter and fine adjustment of acidity and osmolality, it was converted into an injectab...

Fatigue is an indispensable bioalarm to avoid exhaustive state caused by overwork or stresses. It is necessary to elucidate the neural mechanism of fatigue sensation for managing fatigue properly. We performed H(2) ( 15)O positron emission tomography scans to indicate neural activations while subjects were performing 35-min fatigue-inducing task trials twice. During the positron emission tomogr...

Positron emission tomography offers the possibility of evaluating and quantifying regional myocardial blood flow and metabolism. Used in patients with coronary artery disease, positron emission tomography has demonstrated sustained metabolic activity in regions with reduced blood flow and impaired contractile function, and it thereby enables differentiation between viable myocardium and myocard...

Primary cutaneous gamma-delta T-cell lymphoma is a rare subtype of primary cutaneous peripheral T-cell lymphoma. In the latest World Health Organization / European Organisation for Research and Treatment of Cancer classification and World Health Organization classification (4th edition, 2008), the entity previously called “subcutaneous panniculitis-like T-cell lymphoma with gamma-delta T-cell p...

INTRODUCTION Molecular imaging of the spine is a rarely used diagnostic method for which only a few case reports exist in the literature. Here, to the best of our knowledge we present the first case of a combination of molecular imaging by single photon emission computer tomography and positron emission tomography used in post-operative spinal diagnostic assessment. CASE PRESENTATION We prese...