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Updated: Jun 16, 2026

Identifying Coronary Artery Calcification on Non-gated Computed Tomography Scans
Published on: August 28, 2018
Identification of coronary calcified nodules on noninvasive coronary CT: A two-case report with intravascular imaging
Junji Mochizuki1, Mitsuaki Matsumura2, Masafumi Suzuki1
1Department of Radiology, Minamino Cardiovascular Hospital, 1-25-1, Hyoue, Hachioji, Tokyo 192-0918, Japan.
Abstract:
Calcified nodules are a form of coronary calcification associated with acute coronary syndrome and adverse outcomes after percutaneous coronary intervention. We report 2 cases in which noninvasive high-resolution coronary computed tomography (CT) suggested calcified nodules later corroborated by intravascular optical coherence tomography. In case 1, CT demonstrated a protruding calcified focus in the right coronary artery with lower attenuation than adjacent calcification. In case 2, CT showed a small nodular lesion in the proximal left circumflex artery with a similar attenuation pattern. In both cases, the CT findings prompted a calcium-modification strategy and directly informed procedural planning. High-resolution coronary CT may therefore enable noninvasive recognition of calcified nodules with direct implications for preprocedural strategy selection; however, further studies are needed.
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