![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhnFMYHUkkl68zy5hT1H9ryJ6-DydD8TEJjkE2PPqSFtSHxOzRskzYU5R7_OllTEJQh5XxKzinDEUNv8Kzthb8ReaNZCI2RkeJGs4uSTTA8GYTlMfu9OcthAbCWYYYRkSmiWiri63Dc7hg/s400/fig+1.gif)
Type 1 changes were hypointense on T1-weighted imaging (T1WI) and hyperintense on T2-weighted imaging (T2WI) and were shown to represent bone marrow edema and inflammation.
Type 2 changes were hyperintense on T1WI and isointense or slightly hyperintense on T2WI and were associated with conversion of normal red hemopoietic bone marrow into yellow fatty marrow as a result of marrow ischemia.
Type 3 changes were subsequently described as hypointense on both T1WI and T2WI and were thought to represent subchondral bone sclerosis.
Mixed-type 1/2 and 2/3 Modic changes have also been reported, suggesting that these changes can convert from one type to another and that they all present different stages of the same pathologic process.
Modic Change
Type 1 :T1 Low T2 High
Type 2 : T1 High T2 High
Type 3 : T1 Low T2 Low
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