Radiology Key

Fig. 31.1 [18F]FDG PET coronal images demonstrate multiple hypermetabolic lymph nodes on both sides of the diaphragm Fig. 31.2 Axial CT (left upper), [18F]FDG axial (upper right), fused [18F]FDG PET/CT…

(5.1) and the percent standard deviation (or “noise”), %σ, is (5.2)according to the Poisson distribution. If the number of measurements is “large,” the distribution approximates a Gaussian, or normal, distribution,…

Fig. 3.1 Hybrid PET/CT image showing uptake of [18F]FDG in a primary cancer lesion, a mediastinal lymph node (orange), and the structure of the bronchioles (white). (From Quon A, Napel…

Definitions of TNM Primary tumor (T) Clinical TX Primary tumor cannot be assessed T0 No evidence of primary tumor T1 Clinically inapparent tumor neither palpable nor visible by imaging T1a…

Stomach, ileum, colon 1. Well-differentiated endocrine tumor (“carcinoid”) (A) Benign behavior Confined to mucosa–submucosa, nonangioinvasive Size: £1cm (stomach and small intestine) or £2 cm (colon) (B) Uncertain behavior Confined to mucosa–submucosa, angioinvasive Size:…

Fig.4.1 Examples of the planetary model of the atom are shown for (a) hydrogen () and (b) fluorine-18 (). Protons are indicated by the solid circles, neutrons by the hollow…

Definitions of TNM Primary tumor (T)a TX Primary tumor cannot be assessed T0 No evidence of primary tumor Tis High-grade dysplasiab T1 Tumor invades lamina propria, muscularis mucosae, or submucosa…

Fig. 28.1 Schematic representation of the sentinel lymph node ­concept. Assuming that lymph drainage from a solid tumor proceeds in an orderly way from lower-echelon to higher-echelon lymph nodes, the…

Primary tumor (T) TX Primary tumor cannot be assessed (e.g. curettaged or severely regressed melanoma) T0 No evidence of primary tumor Tis Melanoma in situ T1 Melanomas 1.0 mm or…

Fig. 6.1 Conventional dose-rate effect for cell killing as the dose rate is lowered from 150 to 1.6 cGy/min. The dashed curves represent the best fit to the data set…