Abstract
Objectives To evaluate the utility of perfusion MRI as a potential biomarker for predicting response to chemoradiotherapy (CRT) in locally advanced rectal cancer. Methods Thirty-nine patients with primary rectal carcinoma who were scheduled for preoperative CRTwere prospectively recruited. Perfusion MRI was performed with a 3.0-T MRI system in all patients before therapy, at the end of the 2nd week of therapy, and before surgery. The Ktrans (volume transfer constant) and Ve (extracellular extravascular space fraction) were calculated. Results Before CRT, the mean tumour Ktrans in the downstaged group was significantly higher than that in the nondownstaged group (P00.0178), but there was no significant difference between tumour regression grade (TRG) responders and TRG non-responders (P00.1392). Repeatedmeasures analysis of variance (ANOVA) showed significant differences for evolution of Ktrans values both between downstaged and non-downstaged groups (P00.0215) and between TRG responders and TRG non-responders (P00.0001). Regarding Ve, no significant differences were observed both between downstaged and non-downstaged groups (P00.689) or between TRG responders and TRG non-responders (P00.887). Conclusion Perfusion MRI of rectal cancer can be useful for assessing tumoural Ktrans changes by CRT. Tumours with high pre-CRT Ktrans values tended to respond favourably to CRT, particularly in terms of downstaging criteria. Key Points ̇ Perfusion MRI can now assess therapeutic response of tumours to therapy. ̇ Tumours with high initial Ktrans values responded favourably to chemoradiotherapy. ̇ Perfusion MRI of rectal cancer may help with decisions about management.
| Original language | English |
|---|---|
| Pages (from-to) | 1693-1700 |
| Number of pages | 8 |
| Journal | European Radiology |
| Volume | 22 |
| Issue number | 8 |
| DOIs | |
| Publication status | Published - 2012 Aug 1 |
Fingerprint
All Science Journal Classification (ASJC) codes
- Radiology Nuclear Medicine and imaging
Cite this
}
Perfusion MRI for the prediction of treatment response after preoperative chemoradiotherapy in locally advanced rectal cancer. / Lim, Joon Seok; Kim, Daehong; Baek, Song Ee; Myoung, Sungmin; Choi, Junjeong; Shin, Sang Joon; Kim, Myeong Jin; Kim, Nam Kyu; Suh, Jinsuk; Kim, Ki Whang; Keum, Ki Chang.
In: European Radiology, Vol. 22, No. 8, 01.08.2012, p. 1693-1700.Research output: Contribution to journal › Article
TY - JOUR
T1 - Perfusion MRI for the prediction of treatment response after preoperative chemoradiotherapy in locally advanced rectal cancer
AU - Lim, Joon Seok
AU - Kim, Daehong
AU - Baek, Song Ee
AU - Myoung, Sungmin
AU - Choi, Junjeong
AU - Shin, Sang Joon
AU - Kim, Myeong Jin
AU - Kim, Nam Kyu
AU - Suh, Jinsuk
AU - Kim, Ki Whang
AU - Keum, Ki Chang
PY - 2012/8/1
Y1 - 2012/8/1
N2 - Objectives To evaluate the utility of perfusion MRI as a potential biomarker for predicting response to chemoradiotherapy (CRT) in locally advanced rectal cancer. Methods Thirty-nine patients with primary rectal carcinoma who were scheduled for preoperative CRTwere prospectively recruited. Perfusion MRI was performed with a 3.0-T MRI system in all patients before therapy, at the end of the 2nd week of therapy, and before surgery. The Ktrans (volume transfer constant) and Ve (extracellular extravascular space fraction) were calculated. Results Before CRT, the mean tumour Ktrans in the downstaged group was significantly higher than that in the nondownstaged group (P00.0178), but there was no significant difference between tumour regression grade (TRG) responders and TRG non-responders (P00.1392). Repeatedmeasures analysis of variance (ANOVA) showed significant differences for evolution of Ktrans values both between downstaged and non-downstaged groups (P00.0215) and between TRG responders and TRG non-responders (P00.0001). Regarding Ve, no significant differences were observed both between downstaged and non-downstaged groups (P00.689) or between TRG responders and TRG non-responders (P00.887). Conclusion Perfusion MRI of rectal cancer can be useful for assessing tumoural Ktrans changes by CRT. Tumours with high pre-CRT Ktrans values tended to respond favourably to CRT, particularly in terms of downstaging criteria. Key Points ̇ Perfusion MRI can now assess therapeutic response of tumours to therapy. ̇ Tumours with high initial Ktrans values responded favourably to chemoradiotherapy. ̇ Perfusion MRI of rectal cancer may help with decisions about management.
AB - Objectives To evaluate the utility of perfusion MRI as a potential biomarker for predicting response to chemoradiotherapy (CRT) in locally advanced rectal cancer. Methods Thirty-nine patients with primary rectal carcinoma who were scheduled for preoperative CRTwere prospectively recruited. Perfusion MRI was performed with a 3.0-T MRI system in all patients before therapy, at the end of the 2nd week of therapy, and before surgery. The Ktrans (volume transfer constant) and Ve (extracellular extravascular space fraction) were calculated. Results Before CRT, the mean tumour Ktrans in the downstaged group was significantly higher than that in the nondownstaged group (P00.0178), but there was no significant difference between tumour regression grade (TRG) responders and TRG non-responders (P00.1392). Repeatedmeasures analysis of variance (ANOVA) showed significant differences for evolution of Ktrans values both between downstaged and non-downstaged groups (P00.0215) and between TRG responders and TRG non-responders (P00.0001). Regarding Ve, no significant differences were observed both between downstaged and non-downstaged groups (P00.689) or between TRG responders and TRG non-responders (P00.887). Conclusion Perfusion MRI of rectal cancer can be useful for assessing tumoural Ktrans changes by CRT. Tumours with high pre-CRT Ktrans values tended to respond favourably to CRT, particularly in terms of downstaging criteria. Key Points ̇ Perfusion MRI can now assess therapeutic response of tumours to therapy. ̇ Tumours with high initial Ktrans values responded favourably to chemoradiotherapy. ̇ Perfusion MRI of rectal cancer may help with decisions about management.
UR - http://www.scopus.com/inward/record.url?scp=84864699017&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84864699017&partnerID=8YFLogxK
U2 - 10.1007/s00330-012-2416-3
DO - 10.1007/s00330-012-2416-3
M3 - Article
C2 - 22427184
AN - SCOPUS:84864699017
VL - 22
SP - 1693
EP - 1700
JO - European Radiology
JF - European Radiology
SN - 0938-7994
IS - 8
ER -