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Dual axis rotational coronary angiography associated with improved safety
Lower radiation dose and contrast volume were reported for dual axis rotational coronary angiography than for conventional coronary angiography, according to recent findings.
The aim of the study was to compare the two approaches for outcomes including safety, radiation dose and contrast volume. The researchers noted that dual axis rotational coronary angiography (AlluraXperSwing, Philips) involves rotating the C-arm around the patient in a pre-set rotation and with a single automatic pump contrast injection that allows clinicians to view the coronary artery at different angles, while conventional coronary angiography involves multiple views at pre-defined stationary angles.
Patients with similar baseline demographics and clinical characteristics were accrued between November 2012 and February 2013. The analysis included 101 patients in the dual axis group and 100 patients in the conventional coronary angiography group.
Patients with ACS, prior PCI or CABG were excluded.
Clinicians performed the dual axis procedure in a single run for each coronary artery. Conventional procedures were performed in four acquisition runs for the left coronary artery and two to three acquisition runs for the right.
The researchers reported CAD in 77.6% of patients.
Results indicated that the dual axis procedure was associated with 60 mL (interquartile range [IQR], 52.5-71.5) of contrast compared with 76 mL (IQR, 68-87) for the conventional procedure, which the researchers noted was a significant reduction (P<.0001). The dual axis procedure also yielded significantly lower radiation dose as measured by air kerma: 269.5 mGy (IQR, 176-450.5) vs. 542.1 mGy (IQR, 370.7-720.8; P<.0001).
Only 54% of patients in the dual axis group required additional projections compared with 75% in the conventional coronary angiography group (P=.002).
“In a population with a high prevalence of CAD, [dual axis rotational coronary angiography] was safe and resulted in a significant decrease in contrast volume and radiation dose,” the researchers concluded.
Disclosure: The researchers report no relevant financial disclosures.