Dr. J. Leonard Lichtenfeld

CT
CT colonography and Medicare: Are we the enemy?
In this editorial opinion, Dr. Len Lichtenfeld, deputy chief medical officer for the American Cancer Society, outlines his concerns over an editorial in the New England Journal of Medicine praising the decision by the U.S. Centers for Medicare and Medicaid Services not to cover CT colonography -- as well as his objections to the CMS decision itself.
June 23, 2009
2009 06 23 14 37 33 976 Second Opinion Am
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The rating framework demonstrated robust reproducibility, with three-reader concordance reaching up to 93% in highly standardized centers.
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The AI model accurately identified the presence or absence of deep vein thrombosis on unstructured ultrasound reports.
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Declines in testing were greatest among certain underserved groups.
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The models could provide a framework for identifying which adolescents are at higher risk of developing psychiatric conditions.
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(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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