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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Understanding CT flow artifacts is key to better disease diagnosis
Understanding the mechanics of flow artifacts on CT or CT angiography and how these artifacts are created is key to better disease diagnosis.
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Dual-tracer PET/CT shows promise in liver cancer patients
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Studies lacking for trans breast cancer screening trends
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ChatGPT performs poorly on ACR exam for residents
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Understanding CT flow artifacts is key to better disease diagnosis
By Kate Madden Yee
Understanding the mechanics of flow artifacts on CT or CT angiography and how these artifacts are created is key to better disease diagnosis.
April 26, 2024
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Dual-tracer PET/CT shows promise in liver cancer patients
By Will Morton
Dual-tracer PET/CT appears valuable for improving tumor staging in patients with hepatocellular carcinoma being evaluated for treatment.
April 26, 2024
Liver Cancer
Studies lacking for trans breast cancer screening trends
By Amerigo Allegretto
There are limited studies examining breast cancer screening trends in transgender people.
April 25, 2024
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ChatGPT performs poorly on ACR exam for residents
By Will Morton
ChatGPT-4 received a score of 58% on an exam by the American College of Radiology (ACR) used to assess the skills of diagnostic and interventional radiology residents.
April 24, 2024
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ChatGPT-4 not reliable in cancer patient messaging
By Amerigo Allegretto
ChatGPT-4 is not a reliable source for answering patients’ questions regarding cancer and needs physician monitoring.
April 25, 2024
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CT reveals influence of diabetes on COVID-19 severity
By Kate Madden Yee
CT imaging reveals the influence of blood glucose levels on the severity of COVID-19, researchers have reported.
April 25, 2024
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State of the RT profession more palpable than ever
By Liz Carey
As the ASRT prepares to announce changes to its professional-entry pathways and practice standards at its June meeting in Orlando, FL, Board President Brandon Smith said the state of the field is "more palpable than ever."
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Clinical practice LCS program finds more disease than NLST
By Kate Madden Yee
A clinical practice lung cancer screening (LCS) program at Duke University Medical Center found more disease than did the National Lung Screening Trial (NLST).
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SPECT/CT predicts foot amputations in diabetics
By Will Morton
Technetium-99m white blood cell SPECT/CT imaging may be useful for identifying diabetic patients at risk of amputations due to foot infections.
April 24, 2024
Examples in two patients. (Top) Abnormal leukocyte accumulation was observed in the right 1st to 5th toes, with the radioactive lesions extending to the bone, indicating osteomyelitis (left panel, MIP image; right panel, axial SPECT/CT). Two spherical VOIs were drawn on diabetic foot infections (DFIs) and the highest SUVmax was 4.2 (higher than the cutoff of 1.1) Despite intensive treatment, the infection progressed, leading to the patient undergoing right below knee amputation 43 days after SPECT/CT. (Bottom) Mild focal abnormal leukocyte accumulation was detected in the right 3rd and 4th toes. The lesions were in contact with the bone, which raised a suspicion of osteomyelitis (left panel, MIP image; right panel, axial SPECT/CT). A circular VOI was drawn on DFIs and the SUVmax was 1.0 (lower than the cutoff of 1.1). After 10 weeks of antibiotic treatment, the infection was successfully resolved, and the foot was preserved. Image and caption courtesy of Scientific Reports.
Deep-learning algorithm improves liver fibrosis diagnosis
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An algorithm combining the Fibrosis-4 Index and an ultrasound deep-learning model could improve diagnostic accuracy for advanced liver fibrosis.
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Radiologists can take steps toward environmental sustainability
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Radiology departments can take proactive steps to promote environmental sustainability.
April 23, 2024
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Novel risk prediction model improves LCS uptake
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A novel risk prediction model used in the Ontario Lung Cancer Screening Pilot increased the uptake of lung cancer screening among eligible Canadians, researchers have found.
April 23, 2024
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