NGHIÊN CỨU ĐẶC ĐIỂM HÌNH ẢNH TRÊN MRI 3.0TESLA TRONG BỆNH LÝ U VÙNG KHOANG MIỆNG VÀ HẦU HỌNG TRÊN XƯƠNG MÓNG TẠI BỆNH VIỆN UNG THƯ ĐÀ NẴNG

Abstract

SUMMARY

Background: Oral and pharyngeal tumor are more common today and it has complex structure limiting for the paraclinic examination. CT scan was a first choiced to examine the stage of tumor, especially invasion of tumor to the skull base but nowaday CT scan has been displaced by MRI, which has high value to detect soft tissue tumor with high sensitive and acurracy. MRI also gives the
best informstion about anatomy in 2D and 3D.
Object and Method: Cross study, clinical examination find out tumor in the oral or pharyngeal then takes the MRI picture, we
except the patient without hystopathology and treated for cancer before. Coletting the MRI images data in T1W, T2W, STIR, T1W Gd.
Object: MRI machine Siemens 3.0Tesla Model Verio A Tim System T-class, Coil 3T neck A Timy System, Dotarem 10ml.
Method: We decribe every characteristics of MRI images in TIRM Cor, Ax và Sag T1W; Ax và Sag T2W; Ax, Cor và Sag T1 FS+Gd pulse then comparing this characteristics with grade histopathology.
Result: Age: 59.6; male/female=2.5/1; tumor in oral cavity: 35.6%; in hypopharyngeal 23.8%; nasopharyngeal 22% and oropharyngeal 18%. Diameter max: 3.17cm ±1.6. Characteristics
in MRI: 80% hypointensity in T1W, 76% hypersignal in T2W, 81% hyperintensity in STIR, 79% medium - strong enhance in T1W Gd
with this feature the sensitives and acuracy to diagnostic degree malignant of tumor: sensitives and acuracy in T1W: 86% and 71%;
in T2W is 84% and 85%, STIR: 90% and 85%; T1W Gd: 86% and 71%.
Conclusion: MRI has high value to diagnostic in oral and pharyngeal cancer. Especially, MRI play an important role to determine the grade of cancer with high sensitive and acuracy.