PK-YOLO: Pretrained Knowledge Guided YOLO for Brain Tumor Detection in Multiplanar MRI Slices

TL;DR

PK-YOLO is a novel pretrained knowledge guided YOLO-based model designed specifically for improved brain tumor detection in multiplanar MRI slices, leveraging a lightweight backbone and specialized loss functions.

Contribution

This work introduces the first pretrained knowledge guided YOLO model for brain tumor detection, combining a pretrained lightweight backbone with a specialized loss function for small object detection.

Findings

Achieves competitive detection performance on MRI datasets.

Outperforms existing YOLO-like and DETR-like detectors.

Enhances small tumor detection accuracy.

Abstract

Brain tumor detection in multiplane Magnetic Resonance Imaging (MRI) slices is a challenging task due to the various appearances and relationships in the structure of the multiplane images. In this paper, we propose a new You Only Look Once (YOLO)-based detection model that incorporates Pretrained Knowledge (PK), called PK-YOLO, to improve the performance for brain tumor detection in multiplane MRI slices. To our best knowledge, PK-YOLO is the first pretrained knowledge guided YOLO-based object detector. The main components of the new method are a pretrained pure lightweight convolutional neural network-based backbone via sparse masked modeling, a YOLO architecture with the pretrained backbone, and a regression loss function for improving small object detection. The pretrained backbone allows for feature transferability of object queries on individual plane MRI slices into the model encoders, and the learned domain knowledge base can improve in-domain detection. The improved loss function can further boost detection performance on small-size brain tumors in multiplanar two-dimensional MRI slices. Experimental results show that the proposed PK-YOLO achieves competitive performance on the multiplanar MRI brain tumor detection datasets compared to state-of-the-art YOLO-like and DETR-like object detectors. The code is available at https://github.com/mkang315/PK-YOLO.