In each patient, the primary tumor region was contoured as the gross tumor volume (GTV) with the help of positron emission tomography-computed tomography and pelvic magnetic resonance images. Clinical tumor volume-1 (CTV-1) was obtained by adding 20-mm margins in all directions to the GTV. CTV-2 contained regional lymph nodes (internal iliac, external iliac, and presacral lymph nodes) in addition to CTV-1. Fivemillimeter margins were added in all directions to create planning target volume-1 (PTV-1) and PTV-2. Bladder, bilateral femoral heads, and small intestines surrounding the PTV-2 were outlined as organs at risk (OARs). There was a testis cavity on belly board and testes were contoured in the scrotum to assess the doses that were exposed.
Aquilion lb
The Aquilion LB is a computed tomography (CT) imaging system developed by Toshiba. It is designed to provide high-quality imaging for a variety of medical applications. The system uses advanced technology to capture detailed images of the body, which can be used by healthcare professionals for diagnosis and treatment planning.
Lab products found in correlation
21 protocols using aquilion lb
Prone Position Radiotherapy for Pelvic Tumors
In each patient, the primary tumor region was contoured as the gross tumor volume (GTV) with the help of positron emission tomography-computed tomography and pelvic magnetic resonance images. Clinical tumor volume-1 (CTV-1) was obtained by adding 20-mm margins in all directions to the GTV. CTV-2 contained regional lymph nodes (internal iliac, external iliac, and presacral lymph nodes) in addition to CTV-1. Fivemillimeter margins were added in all directions to create planning target volume-1 (PTV-1) and PTV-2. Bladder, bilateral femoral heads, and small intestines surrounding the PTV-2 were outlined as organs at risk (OARs). There was a testis cavity on belly board and testes were contoured in the scrotum to assess the doses that were exposed.
Radiotherapy Planning and Contouring Protocol
Phantom Imaging for Brachytherapy Treatment
Contouring and Artifact Exclusion in CT Imaging
To avoid analysing CT intensity values that do not correspond to tissue densities [37] (link), [38] (link), van Dijk et al excluded 33 % of their patients as they presented with metal artefacts on their CT scans. Implementing the same approach in our cohort, would have resulted in the exclusion of 95 % (104/109) of the patients and was therefore not undertaken. This difference is remarkable and the proportion of patients with dental implants in our cohort is similar to the one reported by the NIH National Institute of Dental and Craniofacial Research with 92 % of adults who have had dental caries in their permanent teeth [39] .
CT Imaging of Left-Sided Breast Cancer
Bilateral Breast Cancer Radiotherapy Planning
The plans were generated by two techniques, i.e. field-in-field (FiF) and VMAT, to a total dose of 40.05 Gy in 15 fractions to both breast, thoracic wall and supraclavicular areas.
Daily CT Imaging for Prostate Cancer Radiotherapy
All patients were immobilized in the supine position using a suction‐type fixed bag and a thermoplastic shell (RSF‐19Gl and ESS‐25, ESFORM; Engineering System Co., Ltd., Nagano, Japan). The bladder volume was as full as possible at the time of the planning CT and daily CT. The daily bladder volume was monitored by ultrasound scans to ensure that the volume was similar to that in the planning CT, and patients were instructed to drink water when the bladder was not sufficiently distended. The planning CT scan protocol was 120 kV, 480 mA, and the daily CT scan protocol 120 kV, 150 mA. The CT images were reconstructed with a slice thickness of 2 mm and a transversal pixel size of 1.07 × 1.07 mm2.
Lung Tumor Characterization by CT Imaging
Carbon-Ion Scanning Beam Treatment Protocol
Prostate HDR Brachytherapy Procedure at SCGH
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