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| Home > Publications database > Impact of Computer-Aided CT and PET Analysis on Non-invasive T Staging in Patients with Lung Cancer and Atelectasis. > print |
| 001 | 142023 | ||
| 005 | 20240229105139.0 | ||
| 024 | 7 | _ | |2 doi |a 10.1007/s11307-018-1196-9 |
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| 024 | 7 | _ | |2 ISSN |a 1536-1632 |
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| 024 | 7 | _ | |2 ISSN |a Molecular |
| 024 | 7 | _ | |2 ISSN |a imaging |
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| 024 | 7 | _ | |2 ISSN |a biology |
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| 037 | _ | _ | |a DKFZ-2018-02253 |
| 041 | _ | _ | |a eng |
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| 100 | 1 | _ | |a Flechsig, Paul |b 0 |
| 245 | _ | _ | |a Impact of Computer-Aided CT and PET Analysis on Non-invasive T Staging in Patients with Lung Cancer and Atelectasis. |
| 260 | _ | _ | |a Amsterdam [u.a.] |b Elsevier Science58693 |c 2018 |
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| 520 | _ | _ | |a Tumor delineation within an atelectasis in lung cancer patients is not always accurate. When T staging is done by integrated 2-deoxy-2-[18F]fluoro-D-glucose ([18F]FDG)-positron emission tomography (PET)/X-ray computer tomography (CT), tumors of neuroendocrine differentiation and slowly growing tumors can present with reduced FDG uptake, thus aggravating an exact T staging. In order to further exhaust information derived from [18F]FDG-PET/CT, we evaluated the impact of CT density and maximum standardized uptake value (SUVmax) for the classification of different tumor subtypes within a surrounding atelectasis, as well as possible cutoff values for the differentiation between the primary tumor and atelectatic lung tissue.Seventy-two patients with histologically proven lung cancer and adjacent atelectasis were investigated. Non-contrast-enhanced [18F]FDG-PET/CT was performed within 2 weeks before surgery/biopsy. Boundaries of the primary within the atelectasis were determined visually on the basis of [18F]FDG uptake; CT density was quantified manually within each primary and each atelectasis.CT density of the primary (36.4 Hounsfield units (HU) ± 6.2) was significantly higher compared to that of atelectatic lung (24.3 HU ± 8.3; p < 0.01), irrespective of the histological subtype. The discrimination between different malignant tumors using density analysis failed. SUVmax was increased in squamous cell carcinomas compared to adenocarcinomas. Irrespective of the malignant subtype, a possible cutoff value of 24 HU may help to exclude the presence of a primary in lesions below 24 HU, whereas a density above a threshold of 40 HU can help to exclude atelectatic lung.Density measurements in patients with lung cancer and surrounding atelectasis may help to delineate the primary tumor, irrespective of the specific lung cancer subtype. This could improve T staging and radiation treatment planning (RTP) without additional application of a contrast agent in CT, or an additional magnetic resonance imaging (MRI), even in cases of lung tumors of neuroendocrine differentiation or in slowly growing tumors with less avidity to [18F]FDG. |
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| 700 | 1 | _ | |a Rastgoo, Ramin |b 1 |
| 700 | 1 | _ | |a Kratochwil, Clemens |b 2 |
| 700 | 1 | _ | |a Martin, Ole |b 3 |
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| 700 | 1 | _ | |a Harms, Alexander |b 5 |
| 700 | 1 | _ | |a Kauczor, Hans-Ulrich |b 6 |
| 700 | 1 | _ | |0 P:(DE-He78)13a0afba029f5f64dc18b25ef7499558 |a Haberkorn, Uwe |b 7 |u dkfz |
| 700 | 1 | _ | |0 P:(DE-He78)5ca7e97b2769bb97f8c73431c6566b94 |a Giesel, Frederik |b 8 |e Last author |u dkfz |
| 773 | _ | _ | |0 PERI:(DE-600)2079211-6 |a 10.1007/s11307-018-1196-9 |g Vol. 20, no. 6, p. 1044 - 1052 |n 6 |p 1044 - 1052 |t Molecular imaging & biology |v 20 |x 1860-2002 |y 2018 |
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