Aquilion lb ct scanner

Manufactured by Toshiba

Sourced in Japan

The Aquilion LB CT scanner is a medical imaging device manufactured by Toshiba. It is designed to capture high-quality computed tomography (CT) scans of the human body. The Aquilion LB utilizes advanced imaging technology to provide detailed visualizations that can assist healthcare professionals in diagnosis and treatment planning.

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Lab products found in correlation

Synergy linear accelerator, by Elekta (1 mentions) Monaco tps, by Elekta (1 mentions) Xio treatment planning system, by Elekta (1 mentions)

4 protocols using aquilion lb ct scanner

Multi-Modal Imaging Acquisition for sCT Generation

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CT images were acquired using an Aquilion LB CT scanner (Toshiba Medical Systems, Tokyo, Japan). MR images were acquired with a 1.5 T Aera wide bore MR-system (Siemens Healthcare, Erlangen, Germany), equipped with a flat tabletop (CIVCO Radiotherapy, Iowa, USA). Two flexible receiver coils were placed under (4 channels) and over (16 channels) the H&N and shoulder region. A coil bridge held the upper coil to avoid deformation of the patient body contour. As recommended by the sCT vendor, a T1 weighted Dixon Vibe (3D spoiled GRE) acquisition was used for sCT generation. For CT and MRI scan parameters, see Supplementary material.
The CT and MRI were acquired consecutively, and in treatment position, with the patient́s head and shoulders immobilized in a custom-made thermoplastic mask (Orfit Industries, Wijnegem, Belgium) and a head support (CIVCO Radiotherapy, Iowa, USA).

Palmér E., Karlsson A., Nordström F., Petruson K., Siversson C., Ljungberg M, & Sohlin M. (2021). Synthetic computed tomography data allows for accurate absorbed dose calculations in a magnetic resonance imaging only workflow for head and neck radiotherapy. Physics and Imaging in Radiation Oncology, 17, 36-42.

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Prostate Radiation Therapy Imaging Protocol

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Institutional ethics approval, including waiver of consent, was granted (HREC/2019/QTHS/58957). As per department protocol, patients undergoing a standard course of prostate radiation therapy with the Clarity Autoscan system would receive a planning scan followed by treatment with 78 Gray (Gy) in 39 fractions. The simulation session included TPUS and a computed tomography (CT) scan to visualise the prostate and surrounding anatomy. The TPUS was acquired with a 5.0 MHz transducer attached to the Clarity system. The planning CT used a Toshiba Aquilion LB CT scanner (Toshiba Medical Systems Corporation, Otawara, Japan) with 2 mm slices. The CT and TPUS scan data were individually imported into the treatment planning system (TPS), Monaco Version 5.11 (Elekta Ltd, Missouri, USA) and co-registered in absolute room coordinates.

De Silva K., Brown A, & Edwards C. (2022). Impact of transperineal ultrasound on perineal skin dose in prostate radiation therapy. Technical Innovations & Patient Support in Radiation Oncology, 23, 27-32.

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DIBH Coaching, CT Simulation, and Patient Positioning

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All potential patients were initially coached in DIBH to assess their suitability before progressing to CT planning. DIBH was achieved using the Active Breathing Coordinator (ABC) device (Elekta, Stockholm, Sweden). This device assists patients to hold their breath after deep inspiration at a lung volume (LV) which is comfortable for each patient. Each individual patient’s LV was determined during a DIBH coaching session conducted prior to CT simulation. The coaching session was also used to determine if patients were able to proceed with DIBH treatment. Patients needed to meet the following criteria: (1) be able to follow prompts from staff, (2) be able to establish a reproducible breathing pattern in regular breathing and (3) be able to hold their breath for a minimum of 20 sec. If patients were able to satisfy these criteria they underwent a FB and DIBH planning CT scan. All patients were positioned supine with arms up on a Posifix breast board (CIVCO, Iowa, USA) and customised T‐shaped VacQfix cushion (Qfix, Avandale, USA) under the shoulder region. A bolster was placed under the knees for comfort. Patients were scanned with 2 mm slice spacing on a Aquilion LB CT scanner (Toshiba Medical, Tochigi, Japan).

Browne P., Beaton N., Sharma H., Watson S., Mai G.T., Harvey J., Bernard A., Brown E., Hargrave C, & Lehman M. (2020). Identifying breast cancer patients who gain the most dosimetric benefit from deep inspiration breath hold radiotherapy. Journal of Medical Radiation Sciences, 67(4), 294-301.

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Chemoradiotherapy Techniques for Cancer

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The chemoradiotherapy techniques have been previously described.^{6 ,13 )} Briefly, an Aquilion LB CT scanner (Toshiba, Ohtawara, Japan) was used to obtain the planning CT images. A XiO^® treatment planning system (TPS) (Elekta, Stockholm, Sweden) was used to segment the volumes of interest in the CT dataset. A 3D conformal radiotherapy technique was performed using a Primus MD2 linear accelerator (Siemens, Munich, Germany) and a Synergy^® linear accelerator (Elekta, Crawley, UK).^{6 )} Volumetric modulated arc therapy (VMAT) was used for intensity-modulated radiation therapy (IMRT). VMAT treatment plans were generated with a Monaco TPS (Elekta, Maryland Heights, MO, USA) and delivered with a Synergy^® linear accelerator (Elekta, Crawley, UK).^{6 ,13 )} Radiotherapy was performed with daily 2-Gy fractions (Table 1). Concurrent IA-CRT using cisplatin was performed as previously described.^{6 )} Lesions of the neck were irradiated in patients with nodal metastasis.

Doi H., Fujiwara M., Kitajima K., Tanooka M., Terada T., Noguchi K., Ishikura R., Kamikonya N, & Yamakado K. (2018). Clinical T staging is superior to fluorodeoxyglucose positron emission tomography for predicting local outcomes after intra-arterial infusion chemoradiotherapy for maxillary sinus squamous cell carcinoma. Nagoya Journal of Medical Science, 80(4), 541-550.

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