Magnetic Resonance Imaging of Coronary Arteries
Fig. 1 CMR provides an excellent modality for delineating cardiac anatomy and function. (a) represents a four-chamber view of a normal heart in diastole and (b) in systole. (c, d)…
Principles of Magnetic Resonance Imaging
Fig. 1 Spin echo pulse sequence. RF radiofrequency, SS slice selection, PE phase encoding, FE frequency encoding, TE echo time, TR repetition time The effect of the RF pulse is…
Technologies in MR and PET for Imaging Atherosclerosis
Type of criteria Criterion Imaging Major Active inflammation CE-MRI, USPIO-MRI, FDG-PET Thin FC with large LRNC MRI, CE-MRI, CT FC disruption MRI, CE-MRI, SPECT Severe stenosis MRA, CTA, B-mode ultrasonography…
Imaging of Vulnerable Carotid Atherosclerotic Plaques
Plaque characteristic MRI CT US PET SPECT DSA Active inflammation ✓ x x ✓ x x Thin FC with large LRNC ✓ ✓ x x x x FC disruption ✓…
Flat Panel Detector CT Angiography for the Assessment of Intracranial Arteries
10-s acquisition 20-s acquisition Low dose High dose High dose Rotation times (s) 10 10 20 Rotation angle (°) 219 219 219 Increment 0.8 0.8 0.4 No. of frames…
Tracer Kinetic Modelling
Fig. 3.1 Uptake of the NK1 receptor ligand [11C]R116301 in a normal volunteer with (left) a total uptake image (60–90 min after injection) and (right) a parametric image on non-displaceable…
Radionuclide Imaging Studies in Pediatric Neurology
Fig. 50.1 Axial 2-deoxy-2(18F)-fluoro-d-glucose PET scan in a child with intractable temporal lobe epilepsy and normal MRI. EEG changes were occasionally bilateral or equivocal. PET scan showed hypometabolism in the…
MRI/PET Brain Imaging
Fig. 5.1 Schematic overview of MRI and PET imaging potential 5.1 MRI Basics 5.1.1 Nuclear Magnetic Resonance (NMR) (Gibby 2005; Pooley 2005.; McRobbie 2003; NessAiver 1997; Elster and Burdette 2001)…
Nuclear Medicine Imaging Tracers for Neurology
Target Related disease Tracers (human application) Binding mechanism TSPO MS, AD, stroke, PD, HD, schizophrenia [11C]PK11195, DAA, and PBR derivatives Antagonist GABA Stroke [11C]Flumazenil Antagonist Dopaminergic system PD, HD, tardive…
Quantification in Brain SPECT: Noninvasive Cerebral Blood Flow Measurements Using 99mTc-Labeled Tracers
(4.1) where A(t) is the arterial activity as a function of measurement time (t), τ is time, k u is the unidirectional influx rate, and V n is the initial…
