1. It’s better to see the high percentage of “birth surface curve”
2. Try to use “Spontaneous Term-Median Trajectory” and move it down to see the effects of “birthing surface curve” and try to find the peak
3. I guess it may be useful to adjust the interval of our current division
1. I need to clear blow the preterm birth trajectory and get the number of “preterm/term/postterm” CRH again
2. Calculate the new “odds ratio” to see the change
3. Keep filtering by choosing “AFP” to get “CRH”
4. Keep calculating the new “odds ratio” to see the change
1. merge 27-31 and 31-34 together. Then the new interval is: 27-34; 34-37; 37-39; 39-40;40-42; >42; draw a horizontal line at the beginning of “birthing surface”
2. extend each patient’s trajectory to cross with the “birthing surface”
3. filter data can be based on “minimum preterm trajectory”.
4. need to write a draft paper for “median trajectory” (last year’s work)<– before 1 Feb., 2007.
1. Should re-work on “smooth birthing surface” building.
2. Other approach is correct and need further working
3. it is possible to only plot “smoking” people to see the change of “birthing surface”; and the other risk factors
4. future approach is to draw a possible trajectory range to predict
5. Using weighted points to determine which point is certain and which is not to better “curve fitting”
1. Hongxin recommends “Simon Warfield”, who develop software to seperate white/grey matter in 3D. Should contact Hongxin for his coming in March.
2. Clear Guillermo’s requirement:
1. geometry of brain
2. developping permeability value function (k=f(x,y))
1. Finished calculating new “median trajectory” for “spontaneous term birth” by using uniform axis-X
2. Modify plotting by using “uniform axis-X” and “uniform axis-Y”.
Furture work: Needs to compare “median trajectory” with each patient to filter some patients out
1. Finish loading image in matlab
Problems:
1. need to learn image processing toolbox (imread…..)
2. may think load the whole MRI(.hdr format) in matlab
3. how to calculate the “permeability” value (What+How)
1. Finsihed building birthing surface by seperating patients in individual week. It’s not smooth enough, which will make the percentage calculation quite difficult. 
2. Try to build smooth birthing surface by choosing: (1) minimum preterm birth patient (2)minimum term patient (3) minimum post-term patient (4) maximum post-term patient
It also has some line out of “birthing surface”, so this approach is not good.
3. Now, try to draw a horizonal line which has the minimum value of Y for all the patients to make sure it can cross with all the patients
Once we build birthing surface for a specific parameter (i.e. CRH), we load a patient can get a possible risk rate. Then, we choose a different parameter, by choosing above the “Mean Trajectory” patients to filter more patients out to improve the risk rate.
Continue doing this for the other parameters (i.e. either above the “Mean Trajectory” or below the “Mean Trajectory”).
