SEGMENTATION OF UTERINE FIBROID ON MR IMAGES BASED ON CHAN–VESE LEVEL SET METHOD AND SHAPE PRIOR MODEL

2014 ◽  
Vol 26 (02) ◽  
pp. 1450030 ◽  
Author(s):  
Hassan Khotanlou ◽  
Alireza Fallahi ◽  
Mohammad Ali Oghabian ◽  
Mohammad Pooyan
Keyword(s):  
Level Set Method ◽  
Level Set ◽  
Uterine Fibroids ◽  
Shape Prior ◽  
Mr Images ◽  
Initial Region ◽  
Artery Embolization ◽  
Shape Model ◽  
Prior Model ◽  
Accurate Treatment

Uterine fibroids are common tumors of female pelvis. Uterine artery embolization (UAE) is an effective treatment of symptomatic uterine fibroids by shrinkage of the size of these tumors. Segmentation of the fibroid region is essential for an accurate treatment strategy. Complex fibroids anatomy, nonhomogeneity region and missing boundary in some cases make this task very challenging. In this paper, we present a method to robustly segment these fibroids on magnetic resonance image (MRI). Our method is based on combination of two steps; Chan–Vese level set method and geometric shape prior model. By calculating an initial region inside the fibroid using Chan–Vese level sets method, rough segmentation can be obtained followed by a prior shape model. We found this algorithm efficient, which provides good and reliable result.

Unsupervised segmentation of the prostate using MR images based on level set with a shape prior

2009 ◽  
Author(s):  
Xin Liu ◽  
D.L. Langer ◽  
M.A. Haider ◽  
T.H. Van der Kwast ◽  
A.J. Evans ◽  
...  
Keyword(s):  
Level Set ◽  
Shape Prior ◽  
Mr Images ◽  
Unsupervised Segmentation

Improved infarction rates in fibroids after the introduction of contrast-enhanced ultrasound during uterine artery embolization

2012 ◽  
Vol 53 (1) ◽  
pp. 34-38 ◽  
Author(s):  
Eric J Dorenberg ◽  
Per-Kristian Hol ◽  
Jarl Å Jakobsen ◽  
Eva Ring
Keyword(s):  
Uterine Artery Embolization ◽  
Uterine Artery ◽  
Symptom Control ◽  
Uterine Fibroids ◽  
Clinical Results ◽  
Contrast Enhanced Ultrasound ◽  
Mr Images ◽  
Artery Embolization ◽  
Institutional Review ◽  
Contrast Enhanced

Background In order to achieve sustained symptom control and minimize the risk of recurrence, uterine artery embolization (UAE) should aim at complete infarction of all fibroids. Purpose To retrospectively evaluate the infarction rate of uterine fibroids in patients that had undergone uterine artery embolization (UAE) after the introduction of contrast-enhanced ultrasound (CEUS) during UAE procedures at our institution. Material and Methods Thirty patients treated with UAE between February 2006 and August 2009 were included. MR images obtained before, at 3 months, and 12 months after the procedure were reviewed. We evaluated volume changes in dominant fibroids as well as the infarction rate of all fibroids in each patient. Clinical results were evaluated by reviewing the medical records. The study was approved by the institutional review board. Results CEUS was technically successfully performed during the UAE procedure in all patients. In five cases the endpoint of embolization was adjusted based on findings at CEUS. The mean volume shrinkage of dominant fibroids was 39.8% after 3 months and 59.8% after 12 months. There was complete infarction of all fibroid tissue in 97% of patients at 3 months and 96% at 12 months. No major complications were observed. Conclusion After the introduction of CEUS during UAE procedures in our institution, high infarction rates were achieved.

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