Method to improve cancerous lesion detection sensitivity in a dedicated dual-head scintimammography system [electronic resource]

• Ngôn ngữ: eng
• Ký hiệu phân loại: 614.87 Forensic medicine; incidence of injuries, wounds, disease; public preventive medicine
• Thông tin xuất bản: Newport News, Va. : Oak Ridge, Tenn. : Thomas Jefferson National Accelerator Facility (U.S.) ; Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy, 2012
• Mô tả vật lý: Medium: ED : , digital, PDF file.
• Bộ sưu tập: Metadata
• ID: 261635
• Chủ đề: 1. 60 applied life sciences

Tóm tắt

 An improved method for enhancing the contrast between background and lesion areas of a breast undergoing dual-head scintimammographic examination comprising: 1) acquiring a pair of digital images from a pair of small FOV or mini gamma cameras compressing the breast under examination from opposing sides
  2) inverting one of the pair of images to align or co-register with the other of the images to obtain co-registered pixel values
  3) normalizing the pair of images pixel-by-pixel by dividing pixel values from each of the two acquired images and the co-registered image by the average count per pixel in the entire breast area of the corresponding detector
  and 4) multiplying the number of counts in each pixel by the value obtained in step 3 to produce a normalization enhanced two dimensional contrast map. This enhanced (increased contrast) contrast map enhances the visibility of minor local increases (uptakes) of activity over the background and therefore improves lesion detection sensitivity, especially of small lesions.