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Coronary artery aneurysms due to Kawasaki disease: diagnosis with ultrafast CT
E E Frey1, G P Matherne, L T Mahoney
1Department of Radiology, University of Iowa Hospitals and Clinics, Iowa City, 52242.
Insights
Ultrafast computed tomography (CT) complements echocardiography for screening coronary artery aneurysms in Kawasaki disease. This imaging technique improves detection of these serious complications.
Area of Science:
- Cardiology
- Pediatric Imaging
- Radiology
Background:
- Coronary artery aneurysms are a severe complication of Kawasaki disease.
- Regular screening is vital for managing these aneurysms.
- Two-dimensional (2D) echocardiography is standard but has limitations in visualizing distal coronary arteries.
Purpose of the Study:
- To evaluate the complementary role of ultrafast computed tomography (CT) alongside 2D echocardiography.
- To assess the effectiveness of ultrafast CT in detecting coronary artery aneurysms in Kawasaki disease patients.
Main Methods:
- Six pediatric patients with known coronary aneurysms were studied.
- Evaluations included both 2D echocardiography and ultrafast CT.
- Comparison of lesion detection rates between the two imaging modalities.
Main Results:
- Ultrafast CT detected 10 out of 11 coronary artery aneurysms.
- One aneurysm was missed due to its contiguity with another, leading to misinterpretation.
- Ultrafast CT identified one aneurysm not initially seen with echocardiography.
Conclusions:
- Ultrafast CT serves as an effective complementary tool to 2D echocardiography.
- This combined approach enhances noninvasive evaluation of coronary artery aneurysms in Kawasaki disease sequelae.
Abstract:
Coronary artery aneurysms are the most serious complication of Kawasaki disease, and periodic screening examinations are necessary. Two-dimensional (2D) echocardiography represents the standard screening method; however, visualization of the distal coronary arteries is often limited. This report describes the complementary role of ultrafast computed tomography (CT) with 2D echocardiography in the evaluation of coronary artery aneurysms resulting from Kawasaki disease (mucocutaneous lymph node syndrome). Six pediatric patients with coronary aneurysms were examined with 2D echocardiography and ultrafast CT. Ten of 11 lesions were detected with ultrafast CT. The one missed coronary artery aneurysm was one of two contiguous aneurysms. Because of intersection thickness these two discrete aneurysms were interpreted as a solitary aneurysm. Ultrafast CT allowed detection of one aneurysm not initially visualized with echocardiography. In conclusion, ultrafast CT was found to be an effective complementary procedure with 2D echocardiography for noninvasively evaluating coronary artery aneurysms occurring as sequelae of Kawasaki disease.