Otha Linton

Nuclear Medicine
Moments in Radiology History: Part 16 -- Early nuclear medicine
After early efforts began to harness the power of x-rays for diagnosis and therapy, some physicians and physicists chose to focus instead on the development of radioactive isotopes. In his latest Moments in Radiology History installment, radiology historian Otha Linton examines the advances that ultimately led to the field of nuclear medicine.
July 10, 2014
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Breast
Moments in Radiology History: Part 15 -- Mammography's roots
Today's debate over the value of breast screening is nothing new. In fact, controversy has dogged mammography almost since the technique was invented. In his latest installment of Moments in Radiology History, Otha Linton traces the mammography debate through the career of its earliest proponent, Dr. Robert L. Egan.
May 8, 2014
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Residents/Fellows
Moments in Radiology History: Part 14 -- The board exam evolves
From June 20 to 25, the last candidates for certification in diagnostic radiology were tested live by American Board of Radiology volunteer examiners at the Executive West Hotel in Louisville, KY. Future candidates will see a board exam that differs radically from the one to which radiology has become accustomed.
July 4, 2013
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Home
Moments in Radiology History: Part 13 -- Dr. Russell H. Morgan
One of the most remarkable U.S. radiologists in the second half of the previous century was Dr. Russell H. Morgan, the chairman of radiology and the dean of medicine at Johns Hopkins University in Baltimore.
March 28, 2013
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Nuclear Medicine
Moments in Radiology History: Part 12 -- Radioisotopes
In the latest Moments in Radiology History column, historian Otha Linton traces the path of radioisotopes from physicist Antoine Henri Becquerel and the Curies to cyclotrons in California, the first treatments of cancer patients, and World War II and the atomic bomb.
February 12, 2013
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Residents/Fellows
Moments in Radiology History: Part 11 -- The 1st residents
The early years of radiology saw many physicians take up the new discipline with little or no formal training. That soon began to change with the establishment of the first radiology residency program in 1915, which accepted one resident, according to radiology historian Otha Linton.
January 13, 2013
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2012
Moments in Radiology History: Part 10 -- RSNA show's early days
When RSNA held its first meeting in December 1915, the conference attracted 30 of the nascent society's 62 members to a Chicago hotel. Now closing in on its 100-year anniversary, RSNA still meets in Chicago, but it draws 60,000 radiology professionals to what has become the world's largest medical meeting.
November 27, 2012
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2012
Moments in Radiology History: Part 9 -- RSNA centennial
As RSNA plans to convene its 2012 meeting in just a few weeks, plans are already being laid for the 100-year anniversary of the Chicago congress. In his latest column, radiology historian Otha W. Linton describes how the RSNA rose from humble Midwestern roots to become one of the pre-eminent medical societies in the world.
November 4, 2012
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Thoracic Imaging
Moments in Radiology History: Part 8 -- Imaging of black lung
In 1969, the U.S. Congress passed a new piece of legislation on coal mining that called for compensation to miners who had developed pneumoconiosis, or black lung. The new program relied heavily on medical imaging to detect the disease, with radiology playing a major role in the program's implementation.
October 14, 2012
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Radiation Oncology/Therapy
Moments in Radiology History: Part 7 -- Early x-ray treatments
Today, diagnostic radiology and radiation oncology are distinctly separate disciplines -- but things weren't always that way. In fact, the early pioneers of radiology began experimenting with the new rays for therapeutic purposes almost as soon as they were discovered.
July 29, 2012
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Images of a 39-year-old who underwent screening mammography. Right craniocaudal (left) and mediolateral oblique (middle) views from preoperative mammography show suspicious grouped fine pleomorphic calcifications (arrows). After biopsy showed ductal carcinoma of situ (DCIS), patient underwent breast-conserving surgery, yielding final diagnosis of ductal carcinoma in situ (intermediate grade, hormone receptor positive). (Right) Screenshot of an output of a commercial AI tool applied to preoperative mammography. AI detected right breast lesion with score of 95% on both views (concentric colored circles). Present study’s reviewing radiologist deemed AI marking to correspond with site of DCIS.
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Axial contrast-enhanced CT scan in a 28-year-old premenopausal woman shows an incidentally detected solid-appearing left ovarian lesion (solid arrow) anterior to the uterus (U), associated with trace ascites in the right adnexa and cul de sac (dashed arrows). At pathologic analysis, this was shown to be ovarian dysgerminoma. Two readers misdiagnosed this lesion, one as a leiomyoma and one as an ovarian fibroma.
CT
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An AI model showed associations with recurrence after DCIS surgery and performed comparably to established clinical risk models.
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Images of a 39-year-old who underwent screening mammography. Right craniocaudal (left) and mediolateral oblique (middle) views from preoperative mammography show suspicious grouped fine pleomorphic calcifications (arrows). After biopsy showed ductal carcinoma of situ (DCIS), patient underwent breast-conserving surgery, yielding final diagnosis of ductal carcinoma in situ (intermediate grade, hormone receptor positive). (Right) Screenshot of an output of a commercial AI tool applied to preoperative mammography. AI detected right breast lesion with score of 95% on both views (concentric colored circles). Present study’s reviewing radiologist deemed AI marking to correspond with site of DCIS.
Clinicians, beware: CT diagnostic accuracy varies by adnexal lesion type
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Axial contrast-enhanced CT scan in a 28-year-old premenopausal woman shows an incidentally detected solid-appearing left ovarian lesion (solid arrow) anterior to the uterus (U), associated with trace ascites in the right adnexa and cul de sac (dashed arrows). At pathologic analysis, this was shown to be ovarian dysgerminoma. Two readers misdiagnosed this lesion, one as a leiomyoma and one as an ovarian fibroma.
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