DTS examinations were performed with the commercially available X-ray system GE Definium 8000, with the VolumeRAD option (GE Healthcare, Chalfont St Giles, UK). Sixty low-dose projection radiographs were acquired during a caudo-cranial tube movement of 30° during a 10-s breath hold at full inspiration, with standard acquisition parameters recommended for DTS (26 (link)). The low-dose projections were reconstructed to approximately 60 coronal section images with a reconstruction interval of 5 mm. No retakes were allowed due to radiation considerations. Effective dose for the 70 kg standard patient was estimated by multiplying the dose-area product (DAP) by 0.26 mSvGy–1 cm–2 (27). DAP was calculated from data in the digital imaging and communications in medicine (DICOM) header of the scout image (28 (link)).
Volumerad
Manufactured by GE Healthcare
Sourced in United Kingdom
VolumeRAD is a digital radiography system designed for comprehensive medical imaging. The system captures high-quality digital images using a volumetric X-ray approach. VolumeRAD enables efficient and reliable image acquisition for healthcare professionals.
Automatically generated - may contain errors
5 protocols using volumerad
1
Dose-Optimized Thoracic Screening with DTS
2
Digital Tomosynthesis for Radiation Dose
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Digital tomosynthesis was performed with the VolumeRAD (GE Healthcare, Chalfont St. Giles, England). Detector position was fixed for DT acquisition within a time period of 11.4 seconds, while the X-ray tube moved continuously in a vertical direction around the standard orthogonal posteroanterior projection. Sixty low-dose projections, ranging from -30° to 30°, were collected at a tube voltage of 125 kV, with an additional 0.2 mm copper filter, and a 1:10 dose ratio at a source-to-image distance of 180 cm. Using these projection images, 39 section images were finally reconstructed with a 5 mm interval. The estimated radiation dose to a standard patient was 0.32 mSv.
3
Postoperative Evaluation of PEEK Prosthesis
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The plain lateral X-rays and MRI scans were obtained at 4 weeks postoperatively. X-rays were acquired with a commercially available digital radiography system (Definium 6000, Volume RAD, GE Healthcare), and MRI scans were acquired with a 3.0-T MRI scanner (Philips, Amsterdam, The Netherlands) using a 10-cm millipede scanner coil. Regions of interest, including the signal intensity changes of the cortical bone and medullary cavity around the PEEK material of the prosthesis and surrounding soft tissue, were analyzed on MRI by a professional radiologist.
4
Postoperative Imaging Assessment
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Plain lateral radiographs and CT and MR images were obtained under general anaesthesia at 12 weeks postoperatively. The regions of interest, including the signal intensity changes in the cartilage and subchondral bones, were analysed by MRI. X-ray images were acquired using a digital radiography system (Definium 6000, Volume RAD, GE Healthcare), whereas CT and MR images were obtained using a 16-section multidetector row CT scanner (GE Medical Systems, Milwaukee, WI, USA) and a 3.0-T MRI scanner (Philips, Amsterdam, the Netherlands), respectively.
5
Radiographic Evaluation of Thoracic Spine
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Radiography and tomosynthesis of the thoracic spine were performed on a commercially available radiography system (Definium 8000 with VolumeRAD option; GE Healthcare, Chalfont St. Giles, UK). The radiography examination consisted of 1) an anterior-posterior (AP) exposure at 75 kVp and 0.1 mm Cu as added filtration followed by 2) a lateral exposure at 80 kVp which is also used by the system as a scout for 3) the tomosynthesis sweep. The lateral tomosynthesis scan was performed using the VolumeRAD software. The tomosynthesis system and its principles have been described in detail previously [7, 8, 18, (link)19] . Briefly, 60 low-dose exposures by the moving X-ray tube from tube angles -15 degrees to +15 degrees on a stationary detector are used to reconstruct about 60 tomographic sections of arbitrary thickness. The sections have a sharp focus plane and with increasing distance structures outside the focus plane become increasingly blurred.
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