Researchers propose a hybrid classical quantum convolutional neural network (CQ CNN) for Alzheimer's Disease (AD) detection using 3D MRI.The CQ CNN incorporates quantum machine learning techniques, specifically parameterized quantum circuits (PQCs), with classical machine learning architectures.The proposed CQ CNN achieves higher accuracy in fewer epochs compared to classical models, with a 97.50% accuracy using only 13K parameters.The use of diffusion-generated data, along with real samples, represents a notable first in the field of quantum machine learning for AD detection.