ABSTRACT
OBJECTIVE: To analyze the characteristics of double inversion recovery (DIR) turbo field echo (TFE) and turbo spin echo (TSE) sequences and explore the value of double inversion recovery TFE sequence on carotid artery wall imaging. PATIENTS AND METHODS: 56 patients (32 males and 24 females, aged 31-76 years with a mean age of 53 years) were performed with DIR TFE and DIR TSE T1 weighted imaging (T1WI) sequences on carotid artery bifurcations. Image quality acquired by different techniques were evaluated and scored by two physicians. Whether there is significant difference is determined by SPSS 11.0 software. Paired-samples t test was used for statistics. RESULTS: There was no significant difference in the image quality scores between two sequences (t = 0.880, P = 0.383 > 0.05). CONCLUSIONS: DIR TFE sequence has short scanning time and high spatial resolution. DIR TFE sequence can be used as the preferred sequence for screening carotid atherosclerotic plaque compared with DIR TSE sequence.
Subject(s)
Algorithms , Carotid Arteries/pathology , Carotid Stenosis/pathology , Image Interpretation, Computer-Assisted/methods , Magnetic Resonance Imaging/methods , Adult , Aged , Female , Humans , Image Enhancement/methods , Male , Middle Aged , Reproducibility of Results , Sensitivity and Specificity , Signal Processing, Computer-AssistedABSTRACT
OBJECTIVE: To study the value of T2-mapping and diffusion weighted imaging (DWI) in the diagnosis of early injury of knee cartilage. METHODS: Seventy-two subjects, including healthy group (n=30) and early cartilage injury group (n=42), were tested on MR scans with T2-mapping and DWI. T2 and apparent diffusion coefficient (ADC) values of cartilage were measured after being processed at the workstation, and the differences were statistically analyzed between the two groups. RESULTS: The mean T2 and ADC values of cartilage in early injury group and health group were respectively 51.58±4.15 ms and 1.78±0.35 ×10(-3) mm(2)/s, 39.54±4.02 ms and 1.44±0.17 ×10(-3) mm(2)/s. There was significant difference between the values of T2 and ADC. CONCLUSION: T2 and ADC values in early cartilage injury have obviously increased. T2-mapping and DWI have high clinical value in the diagnosis of early articular cartilage injury.
