Blood flow dynamic analysis apparatus and magnetic resonance imaging system

A magnetic resonance imaging system comprising;

• a contrast injection device configured to inject a contrast into a predetermined region of a subject;
• and
• a blood flow dynamic analysis apparatus configured to determine a baseline indicative of a signal strength prior to an arrival of the contrast agent into the predetermined region, based on MR signals collected in time series from the predetermined region, said blood flow dynamic analysis apparatus comprising:
• a time detection unit configured to detect a time of data having a minimal signal strength, of a first data sequence in which data of signal strengths of the MR signals are arranged in time series;
• a data fetch unit configured to fetch a second data sequence which appears prior to the time detected by said time detection unit, from within the first data sequence;
• a data detection unit configured to detect centrally-located data from within a third data sequence obtained by sorting the second data sequence in the order of magnitudes of the signals strengths;
• a data extraction unit configured to extract data from the third data sequence, based on the centrally-located data;
• and
• a baseline determination unit configured to determine the baseline, based on the data extracted by said data extraction part.

A magnetic resonance imaging system comprising:

• a contrast injection device configured to inject a contrast into a predetermined region of a subject;
• and
• a blood flow dynamic analysis apparatus configured to determine a baseline indicative of a signal strength prior to an arrival of the contrast agent into the predetermined region, based on MR signals collected in time series from the predetermined region, said blood flow dynamic analysis apparatus comprising:
• a time detection unit configured to detect a time of data having a minimal signal strength, of a first data sequence in which data of signal strengths of the MR signals are arranged in time series;
• a data fetch unit configured to fetch a second data sequence which appears prior to the time detected by said time detection unit, from within the first data sequence;
• a data detection unit configured to detect centrally-located data from within a third data sequence obtained by sorting the second data sequence in the order of magnitudes of the signals strengths;
• a data tentative extraction part configured to tentatively extract data from within the third data sequence, based on the centrally-located data;
• a confidence interval determination part configured to determine a confidence interval for the tentatively extracted data;
• a data extraction part configured to extract data contained in the confidence interval from within the tentatively extracted data;
• and
• a baseline determination unit configured to determine the baseline, based on the data extracted by said data extraction unit.