RSNA 2014

Nov 30, 2014

Morning coffees in hand, attendees arrive at McCormick Place for RSNA 2014.

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Representative images in patients with pancreatic cancer (PC) diagnosed by the deep learning (DL) models. Original axial images (left), corresponding segmentation-masked images (middle), and DL model outputs (right) are shown. The segmented areas of the pancreatic parenchyma, main pancreatic duct (MPD), and pancreatic masses are indicated by yellow, teal, and red overlay, respectively. (A) Contrast-enhanced CT (CECT) images in an 84-year-old man with worsening diabetes mellitus show a 10-mm mass in the pancreatic body with upstream MPD stenosis and dilatation and parenchymal atrophy. The tumor was pathologically confirmed as PC (T1b). (B) CECT images in an 83-year-old man undergoing postoperative surveillance for gastric gastrointestinal stromal tumor show MPD stenosis and dilatation with parenchymal atrophy without a visible mass. The tumor was pathologically confirmed as PC (tumor in situ). (C) Noncontrast CT (NCCT) images in a 65-year-old man undergoing follow-up for mantle cell lymphoma show a 32-mm mass in the pancreatic head with MPD stenosis and dilatation. The tumor was pathologically confirmed as PC (T2). (D) NCCT images in an 81-year-old woman with abdominal distension show MPD stenosis and dilatation with parenchymal atrophy without a visible mass. The tumor was pathologically confirmed as PC (T1b).
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AI models match physicians in pancreatic cancer detection on CT
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Representative images in patients with pancreatic cancer (PC) diagnosed by the deep learning (DL) models. Original axial images (left), corresponding segmentation-masked images (middle), and DL model outputs (right) are shown. The segmented areas of the pancreatic parenchyma, main pancreatic duct (MPD), and pancreatic masses are indicated by yellow, teal, and red overlay, respectively. (A) Contrast-enhanced CT (CECT) images in an 84-year-old man with worsening diabetes mellitus show a 10-mm mass in the pancreatic body with upstream MPD stenosis and dilatation and parenchymal atrophy. The tumor was pathologically confirmed as PC (T1b). (B) CECT images in an 83-year-old man undergoing postoperative surveillance for gastric gastrointestinal stromal tumor show MPD stenosis and dilatation with parenchymal atrophy without a visible mass. The tumor was pathologically confirmed as PC (tumor in situ). (C) Noncontrast CT (NCCT) images in a 65-year-old man undergoing follow-up for mantle cell lymphoma show a 32-mm mass in the pancreatic head with MPD stenosis and dilatation. The tumor was pathologically confirmed as PC (T2). (D) NCCT images in an 81-year-old woman with abdominal distension show MPD stenosis and dilatation with parenchymal atrophy without a visible mass. The tumor was pathologically confirmed as PC (T1b).
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Digital subtraction angiography images of the right knee joint of a 62-year-old participant with predominantly medial knee osteoarthritis. (A) Peri-interventional image of the popliteal artery. Yellow arrow indicates the descending genicular artery, and blue arrow indicates the medial inferior genicular artery. (B, C) Selective preinterventional images show hypervascularity of two branches of the genicular artery: the (B) descending genicular artery (arrow) and the (C) medial inferior genicular artery (arrow). (D, E) Selective postinterventional images obtained after embolization with rapidly resorbable gelatin-based microspheres. Complete elimination of the blush is observed, with preserved perfusion of the proximal arterial segments.
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