|
KMID : 1164220060180010013
|
|
Journal of Korean Society for Radiotherapeutic Technology
2006 Volume.18 No. 1 p.13 ~ p.19
|
|
|
Application of Modified Mupit for the Recurrent Vulva Cancer in Brachytherapy
|
|
Kim Jong-Sik
Jung Chun-Young
Oh Dong-Gyoon
Song Ki-Won
Park Young-Hwan
|
|
|
Abstract
|
|
|
Purpose: To evaluate whether modified MUPIT applicator can effectively eradicate recurrent tumor in uterine cervix cancer and reduce rectal complication after complete radiation treatment.
Materials and Methods: Modified MUPIT applicator basically consists of an acrylic cylinder with flexible brain applicator, an acrylic template with a predrilled array of holes that serve as guides for interstitial needles and interstitial needles. CT scan was peformed to determine tumor volume and the position of interstitial needles. Modified MUPIT applicator was applied to patient in operation room and the accuracy for position of interstitial needles in tumor volume was confirmed by CTscan. Brachytherapy was delivered using modified MUPIT applicator and RALS(192-lr HDR) after calculated computer planning by orthogonal film. The daily dose was 600cGy and the total dose was delivered 3,000 cGy in tumor volume by BID. Rectal dose was measured by TLD at 5 points so that evaluated the risk of rectal complication.
Results: The application of modified MUPIT applicator improved dramatically dose distributions in tumor volume and follow-up of 3 month for this patient was clinically partial response without normal tissue complication, Rectal dose was measured 34.1 cGy, 57.1 cGy, 103.8 cGy, 162.7 cGy, 165.7 cGy at each points, especially the rectal dose including previous EBRT and ICR was 34.1 cGy, 57.1 cGy.
Conclusion: Patients with locally recurrent tumor in uterine cervix cancel treated with modified MUPIT applicator can expect reasonable rates of local control. The advantages of the system are the fixed geometry provided by the template and cylinders. and improved dose distributions in irregular tumor volume without rectal complication.
|
|
|
KEYWORD
|
|
|
modified MUPIT applicator, interstitial brachytherapy, rectal dose, rectal complication
|
|
|
FullTexts / Linksout information
|
|
|
|
|
Listed journal information
|
|
|
|