Klasifikasi Tumor Otak pada Citra MRI Menggunakan Transfer Learning EfficientNetB1 dan Visualisasi Grad-CAM

Suyanti Suyanti ; Chandy Ophelia S ; Lies Aryani ; Prayitno Prayitno
Prosiding Seminar Nasional Ilmu Teknik 📅 2025 Vol 2, No 2 🔗 DOI: 10.61132/prosemnasproit.v2i2.112
Abstract
Magnetic resonance imaging (MRI) provides rich anatomical contrast for brain tumor assessment, yet routine interpretation remains time-intensive and demands high precision. This work develops a pipeline for four-class brain MRI image classification (glioma, meningioma, pituitary tumor, and no tumor) by combining automated brain-region cropping, data augmentation, and transfer learning with EfficientNetB1. Experimental results demonstrate exceptional performance, achieving an overall accuracy of 0.99 (99%) on the test set. Specifically, the model reached an F1-score of 1.00 for the no tumor class, 0.99 for pituitary, and 0.98 for both glioma and meningioma classes. Beyond reporting numerical performance, the study utilizes Grad-CAM heatmaps to verify that predictions rely on clinically plausible regions rather than spurious background cues. These results indicate that an efficiency-oriented backbone, paired with systematic preprocessing, can achieve reliable and interpretable performance for brain tumor classification tasks.
Keywords
brain tumor; MRI; EfficientNet; transfer learning; Grad-CAM; pipeline
How to Cite

Suyanti Suyanti, et al. (2025). Klasifikasi Tumor Otak pada Citra MRI Menggunakan Transfer Learning EfficientNetB1 dan Visualisasi Grad-CAM. Prosiding Seminar Nasional Ilmu Teknik, 2(2). https://doi.org/10.61132/prosemnasproit.v2i2.112

Suyanti Suyanti; Chandy Ophelia S; Lies Aryani; Prayitno Prayitno, "Klasifikasi Tumor Otak pada Citra MRI Menggunakan Transfer Learning EfficientNetB1 dan Visualisasi Grad-CAM," Prosiding Seminar Nasional Ilmu Teknik, vol. 2, no. 2, 2025.

Suyanti Suyanti; Chandy Ophelia S; Lies Aryani; Prayitno Prayitno. "Klasifikasi Tumor Otak pada Citra MRI Menggunakan Transfer Learning EfficientNetB1 dan Visualisasi Grad-CAM." Prosiding Seminar Nasional Ilmu Teknik, vol. 2, no. 2, 2025.

Suyanti Suyanti; Chandy Ophelia S; Lies Aryani; Prayitno Prayitno. "Klasifikasi Tumor Otak pada Citra MRI Menggunakan Transfer Learning EfficientNetB1 dan Visualisasi Grad-CAM." Prosiding Seminar Nasional Ilmu Teknik 2, no. 2 (2025).

Suyanti Suyanti, et al. (2025) 'Klasifikasi Tumor Otak pada Citra MRI Menggunakan Transfer Learning EfficientNetB1 dan Visualisasi Grad-CAM', Prosiding Seminar Nasional Ilmu Teknik, 2(2). doi: 10.61132/prosemnasproit.v2i2.112.

Suyanti Suyanti; Chandy Ophelia S; Lies Aryani; Prayitno Prayitno. Klasifikasi Tumor Otak pada Citra MRI Menggunakan Transfer Learning EfficientNetB1 dan Visualisasi Grad-CAM. Prosiding Seminar Nasional Ilmu Teknik. 2025;2(2).

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