R2, CADx dismiss litigation

AuntMinnie.com staff writers

Sep 30, 2003

Computer-aided detection firms R2 Technology and CADx Systems have mutually agreed to dismiss patent infringement lawsuits involving the two firms. The dismissal includes claims brought by R2 and Shin-Ping Wang in September 2002, as well as claims brought by CADx parent Qualia Computing in October 2002, according to R2 of Sunnyvale, CA, and CADx of Beavercreek, OH. No further details were provided.

By AuntMinnie.com staff writers
October 1, 2003
Related Reading

R2 gets FDA okay for ImageChecker DM, September 22, 2003

R2 nabs Alaska install, 1,000 mark for ImageChecker, September 18, 2003

R2 and iCAD bury hatchet, for a price, September 9, 2003

SourceOne switches CAD partners, September 12, 2003

CADx gets FDA nod for Second Look systems, August 13, 2003

Copyright © 2003 AuntMinnie.com

(A) Free-response receiver operating characteristic (FROC) curve for DBT-DINO and DINOv2 (Meta AI) on the detection task. DINOv2 achieved higher sensitivity than DBT-DINO across most false-positive thresholds. (B) Detection rates of DBT-DINO and DINOv2 for lesions that were ultimately found to be benign (n = 70) and lesions that were found to be cancerous (n = 66). Error bars represent 95% CIs estimated via patient-level bootstrapping with 1000 repetitions. Both models showed similar detection rates for cancerous lesions, whereas DINOv2 detected more benign lesions than DBT-DINO. (C) Example bounding box predictions for DBT-DINO and DINOv2 on the detection test set. Each image is a single two-dimensional section from a three-dimensional digital breast tomosynthesis volume; the first column shows a mediolateral oblique view, and the second and third columns show craniocaudal views. Both models struggled to detect very small lesions, such as the 3-mm-diameter lesion shown in the first column. FP = false positive.

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Images in a 70-year-old asymptomatic woman with a prior excisional biopsy in the left breast yielding lobular carcinoma in situ 3 years earlier. Screening contrast-enhanced mammography (CEM) was performed, which was considered a prevalence screen as the woman had no prior breast MRI in the past 3 years and no prior CEM. (A) Low-energy (26–30 kVp) mediolateral oblique (MLO) and (B) craniocaudal (CC) views show surgical clips but no abnormality. (C) Recombined MLO and (D) CC images show an enhancing mass in the medial left breast (arrows). Biopsy revealed invasive lobular carcinoma. Size was 0.2 cm; tumor grade II/III; negative lymph nodes; and estrogen receptor–positive, progesterone receptor–positive, and human epidermal growth factor receptor 2–negative.

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