[High resolution diffusion-weighted imaging for characterising nasopharyngeal carcinoma]

Area of Science:

• Radiology
• Oncology
• Medical Imaging

Background:

• Nasopharyngeal carcinoma (NPC) diagnosis relies on advanced imaging techniques.
• Diffusion-weighted imaging (DWI) offers valuable insights into tissue characteristics.

Purpose of the Study:

• To evaluate the efficacy of high-resolution DWI with readout segmentation of long variable echo trains (RESOLVE) for characterizing NPC.
• To assess the potential of RESOLVE-DWI quantitative parameters in differentiating NPC clinical stages.

Main Methods:

• 131 newly diagnosed NPC patients underwent DWI using the RESOLVE technique.
• Quantitative parameters including signal intensity and apparent diffusion coefficients (ADCs) of lesions and normal tissue were calculated.
• Statistical analysis compared parameters between NPC and normal tissue, and across different clinical stages.

Main Results:

• All NPCs exhibited high signal intensity on RESOLVE-DWI compared to normal nasopharyngeal tissue.
• Mean, maximum, and minimum ADCs were significantly lower in NPC compared to normal tissue.
• No statistically significant differences in ADC values were observed across different clinical stages of NPC.

Conclusions:

• RESOLVE-DWI effectively detects NPC due to distinct signal intensity and ADC characteristics.
• Quantitative ADC parameters from RESOLVE-DWI are not suitable for differentiating clinical stages of NPC.