Radiology Key

Fig. 13.1 Value of color Doppler with isoechoic nodules. (a) Longitudinal gray-scale view shows a solid isoechoic nodule that is very difficult to visualize and measure. (b) Longitudinal color Doppler…

Fig. 22.1 (a) Gray-scale US . Benign appearing oval 1-cm lymph node, in the longitudinal plane, with a normal central echogenic hilum (arrow). (b) Gray-scale US. Benign appearing oval 1-cm…

1. Put 1.5 cm3 of 1 % Xylocaine into a 3 cm3 syringe and change the needle to a fresh 27-gauge needle. 2. Squirt a few drops out of the…

Fig. 10.1 Hypoechoic nodules . (a) Transverse view of the thyroid demonstrates a nodule (long white arrow) that is hypoechoic or darker than the surrounding thyroid parenchyma (T) but slightly…

Fig. 11.1 Visual schematic of margin features applicable to thyroid nodules It is relevant at this point to clarify an important concept that particularly strikes novice sonographers and trainees in…

Fig. 6.1 This diagram illustrates the basic idea behind the Doppler effect which describes the situation in which a source of waves (“S”) and a receiver (“R1,” “R2,” “R3,” or…

Fig. 27.1 Typical appearance of a parathyroid adenoma seen as a (a) solid oval lesion with well-defined margins and hypoechoic relative to the thyroid gland (calipers in image). Color Doppler…

Fig. 12.1 Longitudinal (a) and transverse (b) ultrasound images of the right thyroid lobe. 56-year-old male with a predominately solid-appearing thyroid nodule measuring approximately 2 cm containing punctate echogenic foci…

Fig. 24.1 Large inferior adenoma Fig. 24.2 Trans-upper PA Fig. 24.3 Intrathyroidal adenoma . Note lack of echogenic line Fig. 24.4 Mediastinal thymic lesion SAG Fig. 24.5 Inferior PA sagittal…

Fig. 44.1 Tubercle of Zuckerkandl: surgical specimen with arrows pointing to bilateral tubercles 44.5 White Knight A hyperechoic (“white”) nodule in Hashimoto’s thyroiditis thought to represent regenerative benign tissue nodule…