Abstract | PURPOSE: MATERIALS AND METHODS: After institutional review board approval was obtained, 20 prospective patients who were suspected of having NSCLC underwent whole- tumor DCE CT with kinetic modeling (Patlak analysis) 24 hours before scheduled surgery. Flow-extraction product (in milliliters per 100 milliliters per minute) and blood volume (in milliliters per 100 milliliters) were derived. After surgery, matched whole- tumor sections were stained for exogenous and endogenous markers of hypoxia ( pimonidazole infused intravenously 24 hours before surgery, immediately after DCE CT; glucose transporter protein). Correlation between DCE CT parameters and immunohistochemical markers was assessed by using the Spearman rank correlation. DCE CT parameters and immunohistochemical markers were also compared according to pathologic subtype, grade, stage, and nodal status by using the Mann-Whitney test. P values less than .05 indicated a statistically significant difference. RESULT: Fourteen patients with confirmed primary NSCLC underwent resection. There were negative correlations between blood volume and pimonidazole staining (r = -0.48, P = .004), and between flow-extraction product and glucose transporter protein expression (r = -0.50, P = .002). Flow-extraction product was significantly higher in adenocarcinomas than in squamous cell tumors (17.73 vs 11.46; P = .043). Glucose transporter protein expression was significantly lower for adenocarcinomas than for squamous tumors (14.07 vs 33.03; P < .001) and in node negative than in node positive tumors (15.63 vs 23.85; P = .005). CONCLUSION:
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Authors | Henry C Mandeville, Quan Sing Ng, Frances M Daley, Paul R Barber, Glenn Pierce, Jessica Finch, Margaret Burke, Alex Bell, Edward R Townsend, Robert Kozarski, Boris Vojnovic, Peter J Hoskin, Vicky Goh |
Journal | Radiology
(Radiology)
Vol. 264
Issue 2
Pg. 581-9
(Aug 2012)
ISSN: 1527-1315 [Electronic] United States |
PMID | 22700554
(Publication Type: Journal Article, Research Support, Non-U.S. Gov't)
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Chemical References |
- Biomarkers, Tumor
- Contrast Media
- Nitroimidazoles
- Radiation-Sensitizing Agents
- iobitridol
- Iohexol
- pimonidazole
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Topics |
- Aged
- Biomarkers, Tumor
(analysis)
- Blood Volume
- Carcinoma, Non-Small-Cell Lung
(diagnostic imaging, pathology, surgery)
- Contrast Media
- Female
- Humans
- Hypoxia
(pathology)
- Immunohistochemistry
(methods)
- Iohexol
(analogs & derivatives)
- Lung Neoplasms
(diagnostic imaging, pathology, surgery)
- Lymphatic Metastasis
- Male
- Middle Aged
- Neoplasm Grading
- Neoplasm Staging
- Nitroimidazoles
- Prospective Studies
- Radiation-Sensitizing Agents
- Radiographic Image Interpretation, Computer-Assisted
- Statistics, Nonparametric
- Tomography, Spiral Computed
(methods)
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