Computed tomography findings for predicting the future occurrence of pancreatic cancer: value of pancreatic volumetry.

Background: The features of pancreatic parenchyma that tend to progress towards pancreatic cancer (PC) are unknown. We performed volumetry of the pancreas in PC patients using computed tomography (CT) scans acquired before detection of PC, and investigated whether CT findings of pancreatic parenchyma could predict the future occurrence of PC.

Methods: Between April 2009 and March 2017, a total of 3769 patients underwent abdominal contrast-enhanced CT, the scans of which were archived as digital images.

Strong enhancement of nano-sized circularly polarized light using an aperture antenna with V-groove structures.

We present a new type of aperture antenna with V-groove structures that are made of Au to enhance strong circularly polarized light (CPL). Simulations using the finite element method revealed that strong CPL was enhanced within the aperture with a diameter of 10 nm. The intensity of the electric field was enhanced and was 22,700 times greater than that of the incident light.