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[Diagnostic value of head and neck neoplasms with 2D gradient echo sequence MR imaging]
Hui-min Shi1, Ping-zhong Wang, Ji-cheng Lou
1Department of Radiology, Ninth People's Hospital, Shanghai Second Medical University, Shanghai 200011, China.
Shanghai Kou Qiang Yi Xue = Shanghai Journal of Stomatology
|February 26, 2004
Summary
Two-dimensional gradient-echo (GRE) magnetic resonance imaging (MRI) better shows head and neck neoplasms extent and capsule than spin-echo (SE) MRI. However, differentiating benign from malignant lesions remains challenging with GRE MRI.
Area of Science:
- Radiology
- Medical Imaging
- Oncology
Context:
- Head and neck neoplasms present diagnostic challenges.
- Accurate imaging is crucial for diagnosis and treatment planning.
- Conventional spin-echo (SE) MRI has limitations in visualizing certain lesion characteristics.
Purpose:
- To evaluate the diagnostic utility of 2D gradient-echo (GRE) sequence MRI for head and neck neoplasms.
- To compare the effectiveness of GRE MRI with conventional SE MRI in detecting and characterizing these lesions.
Summary:
- This retrospective study analyzed 107 head and neck neoplasms in 100 patients using both SE and 2D GRE MRI sequences.
- GRE-T2 imaging demonstrated hyperintense signals in 102 lesions (53 benign, 49 malignant), while GRE-T1 showed them in 42 lesions (18 benign, 24 malignant).
- GRE imaging superiorly delineated lesion extent and capsule compared to SE imaging, with 41 vs. 34 lesions visualized, respectively.
Impact:
- 2D GRE MRI offers improved visualization of head and neck mass extent and capsule compared to SE MRI.
- Despite enhanced delineation, differentiating between benign and malignant head and neck neoplasms using GRE MRI remains difficult.
- Findings suggest GRE MRI is a valuable tool for characterizing mass boundaries but requires complementary methods for definitive diagnosis.