Primary observation of the ADC values and relative ADC of clivus marrow in normal adult with 3.0 T MR scanner
Author(s): WANG Zhilong, LIANG Xianhe, HUANG Xiaoxing, XIAO Xuehong
Pages: 5094-5096
Year: 2014 Issue: 23
Journal: Jilin Medical Journal
Keyword: Clivus; Magnetic resonance imaging; Diffusion weighted imaging; ADC values;
Abstract: Objective To explore the ADC values and rADC of normal adult clivus marrow with 3.0T MR scanner.Methods Multi-b-value DWI was performed in 61 healthy volunteers with Philips Achieva 3.0T TX MR scanner and SENSE NeuroVascular 16 coil.Following the images were transferred to dedicated workstation,image quality were graded and the ADC values of clivus and brain stem were calculated with a junior and a senior radiologist respectively.One month later,the second ADC measurements were done by the senior radiologist. rADC was calculated by ADCclivus/ADCbrain stem.The CV were calculated to valuate the reproducibility of the measurements of ADCbrain stem,and the ICC to valuate the agreement between the intra-observer and inter-observer.Results There were 58 cases enrolled in our study. The ADCclivus were ranged between 0.14×10-3 mm2/s to 0.15×10-3 mm2/s and rADC between 0.204 to 0.219,there were no significant differences in ADCclivus and rADC between the intra-observer and inter-observer.The ICC of ADCclivus with the intra-observer and inter-observer were 0.938 and 0.965.The CV of ADCbrain stem of the junior and first and second measurements of the senior radiologist were 0.0964±0.0190,0.0832±0.0130,0.0903±0.0173,re spectively.Conclusion There are good agreement of ADCclivus,rADC and ADCbrain stem between the intra-observer and inter-observer.There are excellent reproducibility of the measurements of ADCbrain stem,brain stem could potentially be used as an internal reference parameter.
Pages: 5094-5096
Year: 2014 Issue: 23
Journal: Jilin Medical Journal
Keyword: Clivus; Magnetic resonance imaging; Diffusion weighted imaging; ADC values;
Abstract: Objective To explore the ADC values and rADC of normal adult clivus marrow with 3.0T MR scanner.Methods Multi-b-value DWI was performed in 61 healthy volunteers with Philips Achieva 3.0T TX MR scanner and SENSE NeuroVascular 16 coil.Following the images were transferred to dedicated workstation,image quality were graded and the ADC values of clivus and brain stem were calculated with a junior and a senior radiologist respectively.One month later,the second ADC measurements were done by the senior radiologist. rADC was calculated by ADCclivus/ADCbrain stem.The CV were calculated to valuate the reproducibility of the measurements of ADCbrain stem,and the ICC to valuate the agreement between the intra-observer and inter-observer.Results There were 58 cases enrolled in our study. The ADCclivus were ranged between 0.14×10-3 mm2/s to 0.15×10-3 mm2/s and rADC between 0.204 to 0.219,there were no significant differences in ADCclivus and rADC between the intra-observer and inter-observer.The ICC of ADCclivus with the intra-observer and inter-observer were 0.938 and 0.965.The CV of ADCbrain stem of the junior and first and second measurements of the senior radiologist were 0.0964±0.0190,0.0832±0.0130,0.0903±0.0173,re spectively.Conclusion There are good agreement of ADCclivus,rADC and ADCbrain stem between the intra-observer and inter-observer.There are excellent reproducibility of the measurements of ADCbrain stem,brain stem could potentially be used as an internal reference parameter.
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