Radiology Key

Fig. 11.1 One ring of a typical PET scanner and data processing In modern PET scanners, the septa were removed for 3D data acquisition to improve the system sensitivity. For…

Fig. 15.1 1D illustration of the spill-in and spill-out effects. The solid blue line represents the true distribution, the dashed blue lines indicate the edges of the target region, and…

Fig. 19.1 Typical coronary anatomy. The LAD, LCx, and RCA are the three main coronary arteries that perfuse the LV myocardium. The colored polar map is an example image of…

Fig. 8.1 Schematic of positron decay: the unstable parent nuclei decay emitting a positron in the process. The positron travels some distance (referred to as positron range) while losing its…

No. Type of malignancy Percentage (%) 0–14a 0–19a 5-year survivalb 1 Leukemias 30 51.6 47.1 80.7 2 Brain and CNS tumors 20 42.2 43.1 72.1 3 lymphomas 14 16.6 25.1…

Fig. 10.1 Schematic of the dataflow in a PET system. The detector system consists of a large number of detector modules with associated front-end electronics. The outputs from the detector…

Nuclide Half-life Nuclear reaction Decay mode β± mean (KeV) Target material Product Cyclotron-produced PET radionuclides 18F 109.8 m 18O(p,n)18F β+ (96.7 %) EC(3.3 %) 249.8 H2 18O 18F−    20Ne(d,α)18F…

(5.1) A(t) = the radioactivity at time t. A 0 = the radioactivity at time t = 0. λ = the decay constant characteristic of each radionuclide. e = the…

Fig. 16.1 Incorrect quantification of the 18F-FDG activity in the brain due to the head motion causing misregistration between the CT and PET on the left. Software registration of the…

Fig. 12.1 The two rows, referring to an individual patient with primary cervical cancer, show texture maps for FDG (metabolic marker) and Cu-ATSM (hypoxia marker) alone and overlapping texture maps…