Abstract
Objectives: To compare tumour enhancement patterns measured using dynamic contrast-enhanced (DCE)-CT with tumour metabolism measured using positron emission tomography (PET)-CT in patients with non-small cell lung cancer (NSCLC) and stable disease after chemotherapy or chemoradiotherapy. Methods: After treatment, 75 NSCLC tumours in 65 patients who had stable disease on DCE-CT according to Response Evaluation Criteria in Solid Tumour (RECIST) were evaluated using PET-CT. On DCE-CT, relative enhancement ratios (RER) of tumour at 30, 60, 90, 120 s and 5 min after injection of contrast material were measured. Metabolic responses of tumours were classified into two groups according to the maximum standardized uptake value (SUVmax) by PET-CT: complete metabolic response (CR) with an SUVmax of less than 2.5, and noncomplete metabolic response (NR) with an SUVmax of at least 2.5. Results: Using the optimal RER60 cutoff value of 43.7 % to predict NR of tumour gave 95.7 % sensitivity, 64.2 % specificity, and 82.1 % positive and 95.0 % negative predictive values. After adjusting for tumour size, the odds ratio for NR in tumour with an RER60 of at least 43.7 % was 70.85 (95 % CI = 7.95-630.91; P < 0.05). Conclusions: Even when disease was stable according to RECIST, DCE-CT predicted hypermetabolic status of residual tumour in patients with NSCLC after treatment. Key Points: • Dynamic contrast-enhanced CT (DCE-CT) can provide useful metabolic information about non-small cell lung cancer. • NSCLC lesions, even grossly stable after treatment, show various metabolic states. • DCE-CT enhancement patterns correlate with tumour metabolic status as shown by PET. • DCE-CT helps to assess hypermetabolic NSCLC as stable disease after treatment.
| Original language | English |
|---|---|
| Pages (from-to) | 1573-1581 |
| Number of pages | 9 |
| Journal | European Radiology |
| Volume | 23 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - 2013 Jun 1 |
| Externally published | Yes |
Fingerprint
Keywords
- F-fluoro- deoxyglucose positron emission tomography
- Computed tomography
- Enhancement pattern
- Non-small cell lung cancer
- Standardized uptake value
ASJC Scopus subject areas
- Radiology Nuclear Medicine and imaging
Cite this
Dynamic contrast-enhanced CT to assess metabolic response in patients with advanced non-small cell lung cancer and stable disease after chemotherapy or chemoradiotherapy. / Hwang, Sung Ho; Yoo, Mi Ri; Park, Chul Hwan; Jeon, Tae Joo; Kim, Sang Jin; Kim, Tae Hoon.
In: European Radiology, Vol. 23, No. 6, 01.06.2013, p. 1573-1581.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Dynamic contrast-enhanced CT to assess metabolic response in patients with advanced non-small cell lung cancer and stable disease after chemotherapy or chemoradiotherapy
AU - Hwang, Sung Ho
AU - Yoo, Mi Ri
AU - Park, Chul Hwan
AU - Jeon, Tae Joo
AU - Kim, Sang Jin
AU - Kim, Tae Hoon
PY - 2013/6/1
Y1 - 2013/6/1
N2 - Objectives: To compare tumour enhancement patterns measured using dynamic contrast-enhanced (DCE)-CT with tumour metabolism measured using positron emission tomography (PET)-CT in patients with non-small cell lung cancer (NSCLC) and stable disease after chemotherapy or chemoradiotherapy. Methods: After treatment, 75 NSCLC tumours in 65 patients who had stable disease on DCE-CT according to Response Evaluation Criteria in Solid Tumour (RECIST) were evaluated using PET-CT. On DCE-CT, relative enhancement ratios (RER) of tumour at 30, 60, 90, 120 s and 5 min after injection of contrast material were measured. Metabolic responses of tumours were classified into two groups according to the maximum standardized uptake value (SUVmax) by PET-CT: complete metabolic response (CR) with an SUVmax of less than 2.5, and noncomplete metabolic response (NR) with an SUVmax of at least 2.5. Results: Using the optimal RER60 cutoff value of 43.7 % to predict NR of tumour gave 95.7 % sensitivity, 64.2 % specificity, and 82.1 % positive and 95.0 % negative predictive values. After adjusting for tumour size, the odds ratio for NR in tumour with an RER60 of at least 43.7 % was 70.85 (95 % CI = 7.95-630.91; P < 0.05). Conclusions: Even when disease was stable according to RECIST, DCE-CT predicted hypermetabolic status of residual tumour in patients with NSCLC after treatment. Key Points: • Dynamic contrast-enhanced CT (DCE-CT) can provide useful metabolic information about non-small cell lung cancer. • NSCLC lesions, even grossly stable after treatment, show various metabolic states. • DCE-CT enhancement patterns correlate with tumour metabolic status as shown by PET. • DCE-CT helps to assess hypermetabolic NSCLC as stable disease after treatment.
AB - Objectives: To compare tumour enhancement patterns measured using dynamic contrast-enhanced (DCE)-CT with tumour metabolism measured using positron emission tomography (PET)-CT in patients with non-small cell lung cancer (NSCLC) and stable disease after chemotherapy or chemoradiotherapy. Methods: After treatment, 75 NSCLC tumours in 65 patients who had stable disease on DCE-CT according to Response Evaluation Criteria in Solid Tumour (RECIST) were evaluated using PET-CT. On DCE-CT, relative enhancement ratios (RER) of tumour at 30, 60, 90, 120 s and 5 min after injection of contrast material were measured. Metabolic responses of tumours were classified into two groups according to the maximum standardized uptake value (SUVmax) by PET-CT: complete metabolic response (CR) with an SUVmax of less than 2.5, and noncomplete metabolic response (NR) with an SUVmax of at least 2.5. Results: Using the optimal RER60 cutoff value of 43.7 % to predict NR of tumour gave 95.7 % sensitivity, 64.2 % specificity, and 82.1 % positive and 95.0 % negative predictive values. After adjusting for tumour size, the odds ratio for NR in tumour with an RER60 of at least 43.7 % was 70.85 (95 % CI = 7.95-630.91; P < 0.05). Conclusions: Even when disease was stable according to RECIST, DCE-CT predicted hypermetabolic status of residual tumour in patients with NSCLC after treatment. Key Points: • Dynamic contrast-enhanced CT (DCE-CT) can provide useful metabolic information about non-small cell lung cancer. • NSCLC lesions, even grossly stable after treatment, show various metabolic states. • DCE-CT enhancement patterns correlate with tumour metabolic status as shown by PET. • DCE-CT helps to assess hypermetabolic NSCLC as stable disease after treatment.
KW - F-fluoro- deoxyglucose positron emission tomography
KW - Computed tomography
KW - Enhancement pattern
KW - Non-small cell lung cancer
KW - Standardized uptake value
UR - http://www.scopus.com/inward/record.url?scp=84878688057&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84878688057&partnerID=8YFLogxK
U2 - 10.1007/s00330-012-2755-0
DO - 10.1007/s00330-012-2755-0
M3 - Article
VL - 23
SP - 1573
EP - 1581
JO - European Radiology
JF - European Radiology
SN - 0938-7994
IS - 6
ER -