Dual-source CT passes test for coronary disease detection
Studies presented at the RSNA meeting suggest that the promise of dual-source CT will be fulfilled by a big boost in temporal resolution and a corresponding increase in its sensitivity to coronary artery disease.
Studies presented at the RSNA meeting suggest that the promise of dual-source CT will be fulfilled by a big boost in temporal resolution and a corresponding increase in its sensitivity to coronary artery disease.
DSCT accurately identified significant coronary artery disease, defined as more than 50% stenosis, without the use of beta blockers in a study involving 35 patients, reported Dr. Kostantin Nikolaou, CT section chief at Ludwig-Maximilians-University in Munich. The patients were evaluated using both DSCT and conventional angiography.
All 35 studies were deemed diagnostic. Significant disease was found in 17 patients with 32 disease segments. On a per-patient level, no false negatives and two false positive cases were identified.
"At least in this 35 patient population, we reached a sensitivity of 100%. We lost a little specificity, but we were able to exclude disease correctly in all cases," Nikolaou said.
The per-patient evaluation was particularly important because coronary CT will ultimately be used to determine if invasive diagnosis is justified.
"We have to find occlusive disease and exclude it correctly," Nikolaou said. "This was successfully achieved with this patient cohort."
On a per-segment basis, eight false positive findings and four false negative segments were reported. In detection of significant stenoses, DSCT showed a sensitivity of 88%; a specificity of 98%; a positive predictive value of 89%; and a negative predictive value of 100%.
Can MRI-Based AI Bolster Biopsy Decision-Making in PI-RADS 3 Cases?
December 9th 2024In patients with PI-RADS 3 lesion assessments, the combination of AI and prostate-specific antigen density (PSAD) level achieved a 78 percent sensitivity and 93 percent negative predictive value for clinically significant prostate cancer (csPCa), according to research presented at the Radiological Society of North American (RSNA) conference.
The Reading Room: Artificial Intelligence: What RSNA 2020 Offered, and What 2021 Could Bring
December 5th 2020Nina Kottler, M.D., chief medical officer of AI at Radiology Partners, discusses, during RSNA 2020, what new developments the annual meeting provided about these technologies, sessions to access, and what to expect in the coming year.
RSNA 2020: Addressing Healthcare Disparities and Access to Care
December 4th 2020Rich Heller, M.D., with Radiology Partners, and Lucy Spalluto, M.D., with Vanderbilt University School of Medicine, discuss the highlights of their RSNA 2020 session on health disparities, focusing on the underlying factors and challenges radiologists face to providing greater access to care.
New Interventional Radiology Research Shows Merits of Genicular Artery Embolization for Knee OA
December 3rd 2024In a cohort of over 160 patients with knee osteoarthritis (OA), including grade 4 in nearly half of the cases, genicular artery embolization led to an 87 percent improvement in the quality of life index, according to research presented at the recent RSNA conference.
Siemens Healthineers Debuts New Photon-Counting CT Systems at RSNA
December 2nd 2024Debuting at the Radiological Society of North American (RSNA) conference, the new photon-counting computed tomography (PPCT) scanners Naeotom Alpha.Pro and Naeotom Alpha.Prime reportedly combine rapid scan times with high-resolution precision.
