A method for seeded growth of particles with uniform, smooth spherical shape, and narrow size distributions is presented. By using formaldehyde (HCHO) as a reductant and without any stabilizer in an aqueous solution, gold nanoparticles with sizes up to 220 nm were prepared at room temperature. The gold nanoparticles (diameter in the …
The gold seed was clearly shown on MRI as a small signal void using a fast recovery fast spin-echo (frFSE) T2∗ sequence (slice thickness = 3 mm, field of view 18 cm, matrix 256 × 256, time to echo 102 ms, time to repeat 4875 ms) as shown in Fig. 2. The spectroscopy acquisition grid (CSI grid) was placed keeping the gold seed in the center of ...
Transperineal gold seed placement is an effective, safe, well-tolerated technique for placement of gold fiducial markers used in IGRT of the prostate. 5, 18 An advantage of the transperineal technique is that it avoids puncturing the rectum and reduces the possibility of infections. 5, 15, 18, 19 Our modification of Wallner's technique for ...
Nanostar-shaped gold nanoparticles are among the most efficient plasmonic materials for surface-enhanced Raman scattering (SERS) applications, enabling single-particle analysis. This Review summarizes and discusses the state-of-the-art synthetic approaches as well as the strict correlation of the optical properties of this …