Teng W, Li Q, Ma Y, et al. - This study sought to correlate the effect and outcomes of optical coherence tomography (OCT)-guided rotational atherectomy (RA) with intravascular ultrasound (IVUS)-guided RA in the treatment of calcified coronary lesions. Between January 2016 and December 2019, researchers retrospectively analyzed data of calcified coronary lesions treated with RA that had undergone OCT-guided or IVUS-guided at a single-center registry. They compared effect and outcomes between underwent OCT-guided RA and IVUS-guided RA. In this analysis, a sum of 33 lesions in 32 patients received OCT-guided RA and 51 lesions in 47 patients received IVUS-guided RA. This study’s findings demonstrate that OCT-guided RA compared to IVUS-guided RA for treating calcified coronary lesions resulted in better stent expansion and may have improved prognosis.