This retrospective study was performed in a single urban tertiary-care academic ED with an annual census of about 70,000. All adult patients who visited the ED and underwent the GIH-protocol CTA from January 2012 to December 2013 were screened. Among them, patients who did not present with symptoms of hematemesis, melena, and hematochezia were excluded. In addition, we excluded patients with trauma and patients without further diagnostic evaluations in addition to GIH CTA to confirm the diagnosis. These diagnostic evaluations included esophago-gastro-duodenoscopy (EGD), colonoscopy, sigmoidoscopy, capsule endoscopy, bleeding scan, conventional angiography, and surgery, either alone or in combination. These diagnostic or therapeutic techniques were performed during ED stays or subsequent hospital admissions. All diagnostic evaluations and transfusion decisions were at the discretion of the treating physicians. All patients received CTA with the same protocol, including three-phase scans of noncontrast, arterial, and portal phase and infusion of 75–90 mL non-ionic low-osmolar contrast material. Three-millimeter thickness images were obtained using either Aquilion One TSX-301A (320- detector; Toshiba, Tokyo, Japan) or Brilliance (64-detector; Philips, Best, Netherlands) CT scanners.
Aquilion one tsx 301a
Manufactured by Toshiba
Sourced in Japan, Netherlands
The Aquilion ONE TSX-301A is a computed tomography (CT) imaging system manufactured by Toshiba. It is designed to capture high-resolution images of the human body. The system utilizes advanced imaging technologies to provide detailed visualizations for medical professionals.
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Lab products found in correlation
Discovery ct750 hd, by GE Healthcare (1 mentions)
Lightspeed vct, by GE Healthcare (1 mentions)
Somatom definition as, by Siemens (1 mentions)
Brilliance ict, by Philips (1 mentions)
Optima 660, by GE Healthcare (1 mentions)
Uct 780, by United Imaging (1 mentions)
Omnipaque, by GE Healthcare (1 mentions)
Sct 211, by Bayer (1 mentions)
Iodipamide, by Bracco (1 mentions)
Brilliance 64, by Philips (1 mentions)
Aquilion 16, by Toshiba (1 mentions)
7 protocols using aquilion one tsx 301a
1
GIH-protocol CTA for ED Patients
2
Multi-Institution CT Scanning Protocols
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All NCCT scans were obtained from one of the seven CT scanners (Optima 660, Discovery CT750 HD or Lightspeed VCT, GE Healthcare, America; Somatom Definition AS+, Siemens Healthineers, Germany; Brilliance iCT, Philips Healthcare, Netherlands; Aquilion ONE TSX 301A, Toshiba, Japan; uCT 780, United Imaging, China;) at institution A or one of the two CT scanners (Discovery CT750 HD and Lightspeed VCT, GE Healthcare, America) at institution B. CT protocols were 70-130 kVp, automatic tube current modulation(100-300 mA), 5 mm section thickness.
3
Comprehensive Cranial Imaging Workflow
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All participants underwent baseline NCCT and CTP scans using a 640-slice CT (Aquilion ONE TSX-301A; Toshiba, Tokyo, Japan). The follow-up MRI results, including routine, DWI, and SWI sequences, were also obtained. The whole-brain NCCT scan was performed in one rotation (detector width = 16 cm). After the NCCT scan, 50 ml contrast agent (6 ml s -1 ; Omnipaque, GE Healthcare, Chicago, IL) was injected intravenously followed by 50 ml saline to obtain CTP images (acquisition parameters: 128 mAs, 120 kV, scanning width = 5 mm, scanning coverage = 240 mm). 7 s after injection of the contrast agent, a pulsed full rotation scan with 18 time points acquired over 1 min was performed. Multiphase CTAs were generated from CTP images by MIStar software (Apollo Medical Imaging Technology, Melbourne, Australia), including venous peak phase, arterial peak phase, and venous late phase images.
4
Endovascular Thrombectomy for Acute Stroke
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Patients with suspected large artery occlusion underwent computed tomography (CT), CT angiography (CTA) and CT perfusion (CTP) scanning (Aquilion/ONE TSX-301A, Toshiba, Tokyo, Japan). The decision to perform EVT was made according to the latest guidelines, and the procedure was performed after the patient's relatives signed the informed consent form. At our center, EVT was performed within 24 h of symptom onset by 3 interventional neuroradiologists (W.P., S.Z.J., and W.H.D.) with more than 5 years of experience in stroke treatment. The methods of thrombectomy include mechanical thrombectomy with a stent retriever, direct aspiration, balloon dilatation, and angioplasty/stenting. The procedures were performed under general anesthesia in all patients. Recanalization status was evaluated according to the eTICI grading scale, and eTICI grades ≥2b were defined as successful recanalization. All patients were subsequently transferred to our stroke unit or neurological intensive care unit with their arterial blood pressure controlled below 140/90 mmHg.
5
MSCT Angiography Protocol with Intelligent Bolus Tracking
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All studies were performed on a Toshiba 320-row MSCT scanner (Aquilion one TSX-301A, Tokyo, Japan) with respiratory and electrocardiogram gating. Imaging parameters were as follows: tube voltage 120 kV, tube current 350–450 mA, slice thickness 0.5 mm, interlayer spacing 0.5 mm, and spin time 350 ms. The patient was connected to a binocular high-pressure injector (SCT 211, Medrad Inc. USA). The scan was set from the upper margin of the aortic arch to the diaphragmatic surface. A 20 mL of the contrast agent was injected at a rate of 3–5 mL/s (Omnipaque 350 mg/mL, GE Healthcare Inc., Marlborough, MA, USA), followed by 15 mL of saline at the same rate. An intelligent bolus tracking technique was used to trigger the scanning when the CT value of the descending aorta reached 200–220 HU. The patients hold their breath for 4–7 s, and further 40–60 mL contrast agent was infused intravenously at a flow rate of 3–5 mL/s, followed by 15 mL of saline at the same rate.
6
Multidetector CT Imaging of Abdominopelvic Region
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The area from the diaphragm to the pubic symphysis was examined on a multidetector CT scanner (Aquilion 16, Toshiba Medical Systems Corporation; Tochigi ken, Japan; Brilliance 64, Philips, Netherlands; Aquilion ONE TSX-301A, Toshiba Medical Systems Corporation; Tochigi ken, Japan) with plain and dynamic contrast-enhanced scans as follows: tube voltage of 120 kVp, tube current of 200 mA, slice thickness of 5 mm, and rotation time of 0.5 seconds. The helical pitch was 0.9, the field of view was 35 to 40 cm, the matrix was 512 × 512, and a standard reconstruction algorithm was used. After plain CT scan, the patients received 80-100 mL of contrast agent (iodipamide, 370 mg I/mL, Bracco) at a rate of 3.5-4.0 mL/s, followed by 20 mL of saline solution through the elbow vein using a power injector. Scans in the arterial phase (AP, 35 seconds), portal venous phase (PVP, 70 seconds), and equilibrium phase (EP, 3 minutes) were obtained.
7
3D Modeling of Spinal Anatomy
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The spine of a 58-year-old healthy adult female volunteer was scanned with a 320-slice spiral CT (Aquilionone TSX.301A, Toshiba, Japan) after informed consent was obtained. The CT scan data were stored in DICOM format, and imported into Materialise’s Interactive Medical Image Control System (MIMICS), and Mimics Research 17.0 Software (Materialise Mimics, Belgium) was used for preprocessing. For 3D reconstruction, the Tl2-L2 vertebral bone was separated and selected from the background image using the region growing tool, according to the CT value. Each articular facet joint was segmented manually to form three independent masks. After manual repair and filling, 3D models were generated. The digital forward engineering software 3-matic 9.0 (Materialise Mimics) was used to guide further smoothing and repairing. Moreover, the model was segmented into cortical bone, cancellous bone, endplate, fibrous ring and nucleus pulposus by Boolean operation.
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