Line-Field Confocal Optical Coherence Tomography: Is One Hour of Training Sufficient for Diagnosing Basal Cell Carcinoma?

Background/Objectives: Basal cell carcinoma (BCC) is the most common malignancy, characterised by local invasiveness and the potential for tissue destruction. Diagnosing BCC can be challenging, particularly for less experienced dermatologists. Line-field confocal optical coherence tomography (LC-OCT), a new noninvasive optical technique, has become increasingly useful in clinical practice, allowing in vivo imaging at cellular resolution. This study aimed to evaluate the impact of a 1 h structured training session on the ability of dermatology residents to diagnose BCC using LC-OCT. Methods: Eight dermatology residents with different levels of LC-OCT experience (no experienced and low experience in LC-OCT) participated alongside an expert dermatologist as a benchmark. Overall, participants evaluated 40 histopathologically confirmed lesions (20 BCC, 20 non-BCC) before and after training, with and without the inclusion of dermoscopic images. Results: We observed a significant improvement in diagnostic accuracy post-training, especially among inexperienced users, with a 20% reduction in false negatives and a 35% reduction in false positives. When the dermoscopic images were included, further improvements were noted, with the accuracy increasing by an additional 5%. The overall diagnostic rate for inexperienced readers increased from 48% to 76% after training and to 81% with the addition of dermoscopic images in the course. Conclusions: Our study highlights the effectiveness of short, targeted training in enhancing the diagnostic utility of LC-OCT, emphasising its potential for broader clinical adoption to improve BCC detection.