Four-Dimensional Measurement of Lung Tumor Displacement Using 256-Multi-Slice CT-Scanner
| Autor: | Susumu Kandatsu, Masahiro Endo, Masayuki Baba, Shinichiro Mori, Tomoyasu Yashiro, Shuhei Komatsu |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2007 |
| Předmět: |
Pulmonary and Respiratory Medicine
Male Cancer Research Lung Neoplasms medicine.medical_treatment Motion medicine Humans Displacement (orthopedic surgery) Lung cancer Aged Aged 80 and over Lung business.industry Radiotherapy Planning Computer-Assisted Respiration Respiratory disease Exhalation Isocenter Middle Aged medicine.disease Radiation therapy medicine.anatomical_structure Oncology Female Tomography business Nuclear medicine Tomography X-Ray Computed |
| Zdroj: | Lung Cancer. 56(1):59-67 |
| ISSN: | 0169-5002 |
| Popis: | The concept of internal target volume is of marked importance for radiotherapy to lung tumors as respiration-induced motion is important. Individualized assessment of motion is required as tumour site may not predict the extent or pattern of tumour motion. We performed volumetric cine scanning using the 256-multi-slice CT (256MSCT) to study tumor motion during free breathing in 14 inpatients who were treated with carbon-ion radiotherapy. Motion assessment in 16 respiratory phases of the cine CT revealed most tumors to show hysteresis-like behavior. Isocenter displacement between peak exhalation and inhalation for the average of the right and left lungs were 7 mm, 7 mm and 15 mm for the upper, middle and lower lobes, respectively. Cine CT with the 256MSCT improved the evaluation of tumor displacement and overcomes some of the limitations associated with current CT methods. Volumetric cine CT data provides useful data on motion for planning in all radiation approaches for lung tumors. |
| Databáze: | OpenAIRE |
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