Initial experience of 3 tesla apparent diffusion coefficient values in differentiating benign and malignant thyroid...

Area of Science:

• Radiology
• Oncology
• Medical Imaging

Background:

• Thyroid nodules are common, requiring accurate differentiation between benign and malignant types.
• Distinguishing benign from malignant thyroid nodules is crucial for appropriate patient management and treatment.
• Diffusion-weighted magnetic resonance imaging (DWMRI) offers insights into tissue microstructure.

Purpose of the Study:

• To assess the efficacy of DWMRI with a 3 Tesla (T) MRI scanner in differentiating benign and malignant thyroid nodules.
• To determine if apparent diffusion coefficient (ADC) values can serve as a biomarker for thyroid nodule characterization.

Main Methods:

• DWMRI was performed on 28 thyroid nodules in 25 patients and 14 healthy controls using a 3T MRI scanner.
• Apparent diffusion coefficient (ADC) values were calculated from reconstructed ADC maps.
• ADC values were compared with histopathological diagnoses.

Main Results:

• Mean ADC values differed significantly among benign nodules (1548 ×10(-6) mm(2)/s), malignant nodules (814 ×10(-6) mm(2)/s), and normal thyroid tissue (1323 ×10(-6) mm(2)/s) (P = 0.001).
• A cutoff ADC value of 905 ×10(-6) mm(2)/s achieved 90% sensitivity and 100% specificity in differentiating benign from malignant nodules.
• ADC values provided a clear distinction between benign and malignant thyroid lesions.

Conclusions:

• ADC values derived from 3T DWMRI show promise as a non-invasive tool for differentiating benign from malignant thyroid nodules.
• This imaging technique can aid clinicians in diagnosis and treatment planning for thyroid nodules.
• DWMRI offers a valuable adjunct to conventional diagnostic methods for thyroid nodule evaluation.