Subjective image quality analysis
BLIND
Three board-certified musculoskeletal radiologists with six years (J.L.), one year (N.L.), and one year (Y.L.) of subspecialty experience individually assessed the conventional and DNN-reconstructed image sets of the 45 knee MRI, using picture archiving and communication system (PACS) monitors (Totoku, Tokyo, Japan). The radiologists were blind to whether the image was FSE-conventional or FSE-DNN. Each image was assigned a unique random number, and the images were evaluated in a random order. The reviewers scored the images independently based on clarity of overall image quality of anatomical structures, perceived image noise, presence of imaging artifacts using a five-point scale. The clear visibility of the medial meniscus and lateral meniscus; ligamentous structures including anterior cruciate ligament (ACL), posterior cruciate ligament (PCL), and medial collateral ligament (MCL); and cartilage grading were estimated separately.