Aim. This paper describes the digital implementation of a mathematical transform namely 2D Fast Discrete Curvelet Transform (FDCT) via UnequiSpaced Fast Fourier Transform (USFFT) in combination with the novel segmentation method for effective detection of breast cancer. Methods. USFFT performs exact reconstructions with high image clarity. Radon, ridgelet and Cartesian filters are included in t...

Obtaining seismic images with good quality in hardrock environments has been challenging. This condition applies to many mineral explorations using seismic methods including our study area where the data quality is strongly affected by soft, near-surface materials and a reflector with low contrast in rock physical properties. Until recently, no effective processing has been applied to the seism...

VOI imaging can provide higher image quality at a reduced dose for a subregion. In this study with a robot-driven C-arm FDCT system, the goals were proof of feasibility for inner ear imaging, higher flexibility during data acquisition, and easier processing during reconstruction. First a low-dose OV scan was acquired allowing an orientation and enabling the selection of the VOI. The C-arm was t...

Follicular Dendritic Cell Sarcomas (FDCS), formerly known as follicular dendritic cell tumors (FDCT), are rare and likely under-diagnosed malignancies arising in the dendritic reticulum cells of lymph nodes. Extranodal cases are rare, with fewer than 70 cases reported in the head and neck.1 The tonsils are the most common extranodal site in the head and neck;2 other sites include the nasopharyn...

this paper presents a new procedure for automatic extraction of the blood vessels and optic disk (od) in fundus fluorescein angiogram (ffa). in order to extract blood vessel centerlines, the algorithm of vessel extraction starts with the analysis of directional images resulting from sub‑bands of fast discrete curvelet transform (fdct) in the similar directions and different scales. for this pur...

Aim. This paper describes the digital implementation of a mathematical transform namely 2D Fast Discrete Curvelet Transform (FDCT) via UnequiSpaced Fast Fourier Transform (USFFT) in combination with the novel segmentation method for effective detection of breast cancer. Methods. USFFT performs exact reconstructions with high image clarity. Radon, ridgelet and Cartesian filters are included in t...

.Abrrrurr-Future mobile devices will increasingly have multi,ple sources of location information associated with them, such as GPS. cellular ~ell-s~ctor ID. Bluetooth or 802.11 wireless LAN. I n fdct. cellular phones with GPS receivers and 802.11 wireless LAN are already becoming available. However, not all location technologies will operate e\,erywhere (e.g. GPS typically will not \wrk indoors...