Small Lung Tumors: Long-Scan-Time CT for Planning of Hypofractionated Stereotactic Radiation Therapy—Initial Findings

Dose Distribution Analysis in Stereotactic Body Radiotherapy Using Dynamic Conformal Multiple Arc Therapy

“…The median tumor diameter was 2.4 cm (range, 0.9-5.9), and the median gross tumor volume was 5.7 cm 3 (range, 0.5-55.9). We have already reported our technique for SBRT (50 Gy total in five fractions within 5 days) in detail (7)(8)(9). In brief, we used abdominal pressure corsets, if necessary, and confirmed that tumor motion was <1 cm.…”

“…In brief, we used abdominal pressure corsets, if necessary, and confirmed that tumor motion was <1 cm. For the treatment planning computed tomography (CT) scans, we used the long-scan-time CT or ''slow CT'' technique (8) to directly demonstrate the internal target volume (ITV) after immobilizing the patient with a vacuum pillow. The PTV was defined by adding 6-8-mm margins to the ITV in all directions.…”

Comparison of clinical, tumour-related and dosimetric factors in grade 0–1, grade 2 and grade 3 radiation pneumonitis after stereotactic body radiotherapy for lung tumours

“…We have described our methods for SBRT in previous reports [7,8]. To summarise briefly, long-scan-time CT was used to directly visualise the internal target volume (ITV) after immobilising the patient with a vacuum pillow.…”

Early Graphical Appearance of Radiation Pneumonitis Correlates With the Severity of Radiation Pneumonitis After Stereotactic Body Radiotherapy (SBRT) in Patients With Lung Tumors

“…We have described our SBRT methods in previous reports (12,13). Briefly, long-scan-time CT was employed to visualize the internal target volume (ITV) directly after immobilizing the patient with a vacuum pillow.…”