  The field of clinical image analysis has been applying transfer learning
models increasingly due to their less computational complexity, better accuracy
etc. These are pre-trained models that don't require to be trained from scratch
which eliminates the necessity of large datasets. Transfer learning models are
mostly used for the analysis of brain, breast, or lung images but other sectors
such as bone marrow cell detection or bone cancer detection can also benefit
from using transfer learning models, especially considering the lack of
available large datasets for these tasks. This paper studies the performance of
several transfer learning models for osteosarcoma tumour detection.
Osteosarcoma is a type of bone cancer mostly found in the cells of the long
bones of the body. The dataset consists of H&E stained images divided into 4
categories- Viable Tumor, Non-viable Tumor, Non-Tumor and Viable Non-viable.
Both datasets were randomly divided into train and test sets following an 80-20
ratio. 80% was used for training and 20\% for test. 4 models are considered for
comparison- EfficientNetB7, InceptionResNetV2, NasNetLarge and ResNet50. All
these models are pre-trained on ImageNet. According to the result,
InceptionResNetV2 achieved the highest accuracy (93.29%), followed by
NasNetLarge (90.91%), ResNet50 (89.83%) and EfficientNetB7 (62.77%). It also
had the highest precision (0.8658) and recall (0.8658) values among the 4
models.
