The method they developed, Electronic REference To access In vivo Concentrations (ERETIC), uses either a broad band antenna [3], [4] or the second coil in a high resolution probe [5] [7] to broadcast an amplitude modulated signal that replicates a free induction decay (FID).
But in the first decade of 20th century new high-resolution probes tremendously improved this technique.
Multiscale endoscopy platforms that use widefield imaging are needed to better direct the placement of high-resolution probes.
We have chosen an elementary example to illustrate the capabilities of the optimal control formalism: broadband, constant phase excitation which tolerates miscalibration of RF power and variations in RF homogeneity relevant for standard high-resolution probes.
With the recent development of high-resolution probes, the use of musculoskeletal ultrasound has significantly increased [5].
Table 1 provides a list of the ultrasound equipment and the frequencies of the high-resolution probes used for parathyroid ultrasound examinations in our centre; Table 2 summarises the patient characteristics.
EUS demonstrates normal gastric wall as a five-layered structure and up to 9 distinct layers when using high-resolution probes.
With high-resolution probes, a previously described blurred margin could actually be a spiculated margin with sharp demarcation or a poorly defined margin where the tumour cannot be discriminated from the normal parenchyma.
It was optimized with a 120mm optimal WD and a working range of 80~180mm, within which the modulation transfer function (MTF) values of both the wide-angle and high-resolution probes are greater than 0.2 at the Nyquist frequency of the image sensors.
"A high-resolution probe could reveal them early in their development".
