Release date: 2008-09-08
Objective: To evaluate the 16-slice spiral CT in the identification of abnormal origin and abnormal stroke of right coronary artery (RCA) by conventional X-ray coronary angiography (CAG). value. Methods A retrospective analysis of 8 patients with congenital RCA variants with multi-slice spiral CT (MSCTA) showed that 7 patients had CAG data. Comparative analysis showed differences in RCA ectopic opening and abnormal stroke. Simulated endoscopic techniques are used to evaluate ectopic openings and their relationship to adjacent normal coronary openings. Multi-planar recombination (MPR), curved multiplanar recombination (CMPR), maximum density projection (MIP), and volumetric imaging (VR) recombination methods were used to evaluate the abnormal behavior of coronary arteries and their relationship with adjacent large vessels. The RCA displayed by CAG has at least 2 different perspectives for evaluating its origin and itinerary. Results The RCA of the 8 patients were all shown by MSCTA. In 6 of these patients, RCA originated from the left coronary sinus, 1 originated from the end of the left main coronary artery, and the other originated from the enlarged posterior coronary sinus. No abnormalities were seen in all abnormal openings. Eight abnormal coronary arteries pass through the aortic root and the gap between the pulmonary artery or the right ventricular outflow tract. In 7 cases of CAG, only 5 cases showed abnormalities. Conclusion MSCTA shows that RCA of congenital variation is significantly better than CAG. For patients suspected of coronary artery variability, non-invasive 16-slice MSCTA examination is preferred. ã€Key words】 Tomography, X-ray computed; Coronary angiography; Coronary vascular malformation Evaluation of right cor onar y anomalous or igin with mulpi-slice spiral CT SHI He-shui* , HANPing, KONG Xiang-quan, FENG Ga n-sheng, Ha ns-Juergen Brambs, Martin HK Hoffmann. * Departmentof Radiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China [Abstra ct] Obj ective To evaluate the role of 16 -slice spiral computed tomography angiography( MSCTA) to identcoronary artery ( RCA ) withconventional X-ray coronary angiography ( CAG ) serving as standard of reference. Methods MSCTA datain 8 patients with anomalous RCA were retrospectively analyzed for the study, 7 of them had also undergoneCAG examinations. MSCTA and CAG images were analyzed in blinded fashion for accuracy of anomalousartery origin and path detection. Results were compared in a secondary consensus evaluation. Virtualendoscopy ( VE) was used to evaluate the orand its relati On-board with theadjacent ostia of normal arteries. Multi-planar reconstruction (MPR), curved MPR, thin-slab maximum intensity (HP), volume rendering (VR) or slab VR (cut-plane VR) were used to assess the aberrant path of the RCA originated from the left sinus of Valsalva in 6 patients, one RCA from the RCA originated from the left sinus of Valsalva in 6 patients, the RCAwere analyzed on CAG. Results The anomalous RCA for all 8 patients were correctly displayed onMSCTA. End of left maincoronary artery, another RCA arose from the posterior sinus of Valsalva. The anomalous ostia showed nostenosis. All of them passed between the aortic root and the pulmonary artery. For 7 patients with CAG alonecorrect identConclusion MSCTA was superior toshow the anomalous ora prime Non-invasive imagingtool for suspected coronary anomalies. [Key wor ds] Tomography, X-ray Computed; Coronary angiography; Coronary vessel anomalies
Source: Meditech Medical Network
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