During the 64‑slice spiral CT (Aquillion; Canon Medical Systems Corporation) guidance, the 18G semi-automatic biopsy needles and matching 17G coaxial needles (TSK Surecut; TSK Laboratory) were used. The scanning layer thickness was 5 mm, tube voltage was 100 kV and tube current was adopted automatic low current.
Aquillion
Manufactured by Canon
Sourced in Japan, Germany
The Aquillion is a computed tomography (CT) imaging system designed for medical and industrial applications. It produces high-quality, three-dimensional images of internal structures through the use of X-ray technology. The core function of the Aquillion is to capture and generate detailed visual data for diagnostic and analytical purposes.
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4 protocols using aquillion
1
Spiral CT-Guided Biopsy Protocol
2
CT Imaging of Respiratory Disease Patients
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Computed tomography scans of 14 patients were acquired using multidetector CT scanners with 64 or 320 detector rows (Aquillion CX or Aquillion ONE, Canon Medical Systems, Tochigi, Japan) at our institution. Computed tomography scans of remained seven patients were performed using multidetector CT scanners with 16 or 64 detector rows (Aquillion, Aquillion CXL, or Aquillion lightning, Canon Medical Systems, Tochigi, Japan; Bright Speed, GE Medical Systems, Wisconsin, USA) at outside hospitals. All scans were obtained in the supine position during end-inspiration without intravenous contrast material. Acquisition parameters for all CT scans were as follows: reconstructed slice thickness of 5–7 mm; 120 kVp; automatic milliampere setting with range of 60–420 mA. Thin-slice images with 1- or 2-mm thickness were also available in 18 patients.
3
CT-Guided Percutaneous Transthoracic Needle Biopsy
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All patients signed the preoperative informed consent for PTNB (the patients were informed regarding the purpose and possible risks of PTNB, as well as treatment options based on available technology). Each patient did not receive treatment with aspirin for >7 days, and their blood count and coagulation function met the guidelines for interventional radiology (8 (link)). DXW and YGW had >7 years of experience in CT-guided PTNB. The procedure was performed under the guidance of a 64-slice spiral CT (Aquillion; Canon Medical Systems Corporation) using an 18G semi-automatic biopsy needle with a matching 17G coaxial needle (TSK Surecut; TSK Laboratory). The patient position was determined by selecting the puncture route that was the shortest to the lesion and that could be used to avoid contact with the interlobar pleura, bullae and blood vessels. All biopsies were performed with a coaxial technique. Following insertion of the 17G coaxial needle into the edge of the lesion, the 18G semi-automatic biopsy needle was then used for biopsy.
4
Precise Catheter Placement for Targeted Radiation Therapy
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To achieve precise placement of the catheter sheaths incorporating the irradiation catheters within a target lesion, initial needle placement as well as necessary monitoring of the guide wire and catheter sheaths need to be performed under image guidance. In the daily routine, visualization was performed by CT fluoroscopy (Aquillion, Canon Medical Systems, Neuss, Germany) with 120 kVp/30 mAs, 0.5 s rotation time, 6-mm single-slice acquisition, and an image matrix of 512 × 512. Image reconstruction was based on an iterative image reconstruction algorithm [16] (link). Within the study, any possible step during catheter placement was performed utilizing sonography (EPIQ7, Philips Medical Systems, Amsterdam, The Netherlands) with low-frequency ultrasound transducers (1-5 MHz convex, 1-6 MHz matrix). Needle guidance or free-hand approach during ultrasound-assisted puncture was used at the discretion of the interventional radiologist. Final radiotherapy planning was based on a CT scan in all cases (planning algorithm see above).
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