Calcification of the intracranial arteries associated with primary atherosclerosis is more frequent in elderly people. The prevalence of intracranial artery calcification are: internal carotid artery: ~60%. vertebral artery ~20%.
It may feel as big as a whale as you begin your third trimester of pregnancy (which will last from week 27 to the end of your pregnancy)âlike you canât get any biggerâbut trust me; youâre about to! As your belly swells; your little one grows to between 6 and 9 pounds during this time.
BEST ANSWER. 1  First trimester ends at the end of your 13th week. 2  3 months. 3  Count 12 weeks, starting from the day of your last period. 4  the first trimester is from week 1 to the end of week 12 the second trimester is from week 13 to the end of week 26 the third trimester is from week 27 to the end of the pregnancy.