Estimation Of Sar Value Of Brain Using Common Brain Sequences

Abstract

Background: SAR is radiofrequency power sent to tissue during Magnetic Resonance Imaging examination. RF power accumulation outcomes in increased warming of patient muscles. In our study aim is to estimation of SAR value of brain using common brain sequences in western UP population using Siemens MAGNETOM Avanto 1.5 Tesla MRI scanner.

Objective: (i) To estimate the SAR value in common sequences used in brain (ii) To compare the SAR value among common brain sequences

Methods and material: In this prospective cross-sectional study on 42 female patients and 58 male patients referring to the department of radio-diagnosis and imaging, Teerthanker Mahaveer hospital and research center, Moradabad UP west India were evaluated. SAR value of common brain sequences were measured by using SAR measuring tool. Correlation is done between sequences.

Result: A total of 100 patients were evaluated. Mean age was 41.89 years ± 13.14, mean height was 159.96 cm ± 14.98, and mean weight was 66.31 kg ± 9.43. Mean of SAR values of spin echo was 1.54 w/kg ± 0.41, fast spin echo was 1.79 w/kg ± 0.53, FLAIR 1.74 w/kg ± 0.48, Diffusion 1.96 w/kg ± 0.74, and GRE 1.65 w/kg ± 0.46.

Conclusion: SE images showed frequently higher SAR in all patients compared to FSE, FLAIR, DWI and GRE.