of Carotid Arteries
Fig. 1 Low-dose axial CT image performed during test bolus of contrast injection with ROI placed over the region of the carotid bifurcations and revealing peak contrast enhancement 17 s…
of Intracranial Atherosclerosis
Fig. 1 Impact of field strength on imaging. (a) Axial maximum intensity projection (MIP) slab from 3D TOF MRA study at 1.5 T. (b) Axial MIP slab from 3D TOF…
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…
Genitourinary System
Genitourinary System QUESTIONS 1 What percent of renal plasma flow is usually cleared by the glomerular filtration? A. 10% B. 20% C. 40% D. 80% View Answer 1 Answer B….
Physics, Artifacts, NRC, Quality Control, and Safety
Physics, Artifacts, NRC, Quality Control, and Safety QUESTIONS 1 What is the photon energy of the radiopharmaceutical shown below? A. 511 keV B. 1,022 keV C. 511 MeV D. 1,022…
Pediatric Nuclear Medicine
Pediatric Nuclear Medicine QUESTIONS 1A The following renal scintigraphy was performed on a 7-year-old patient with fever. What radiopharmaceutical was used for this examination? A. Tc-99m DMSA B. Tc-99m DTPA…
