CT scans were performed using a Siemens SOMATOM Sensation 16-slice spiral CT (Siemens AG) with a layer thickness of 2.5 mm and a layer spacing of 2.5 mm. The 0.625-mm standard algorithm was used for reconstruction. The coronal plane and sagittal plane were reconstructed with a layer thickness of 2.0 mm. Enhanced scanning was performed at 25, 70 and 300 sec, respectively, after injection of ioversol (300 mg/100 ml; Medtronic Ltd.) at a rate of 2.5 ml/sec and a dose of 80 ml.
Somatom sensation 16 slice
Manufactured by Siemens
Sourced in Germany, United States
The SOMATOM Sensation 16-slice is a computed tomography (CT) scanner manufactured by Siemens. It is designed to capture high-quality, three-dimensional images of the human body using 16 detector rows. The device utilizes advanced imaging technology to produce detailed scans, enabling medical professionals to analyze anatomical structures and support diagnostic procedures.
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Lab products found in correlation
3 protocols using somatom sensation 16 slice
1
CT Imaging Protocol for Ioversol Contrast
2
Percutaneous Biopsy Technique for Tumor Sampling
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Interventional radiologists performed all percutaneous biopsies. Before beginning the procedure the interventional strategy, especially patient’s positions and biopsy pathways were planned using CT images. The interventions were performed in two different CT scanners (GE Lightspeed 8 slice, GE-Healthcare; Somatom Sensation 16 slice, Siemens Healthcare).
The intervention was started with skin disinfection and subcutaneous local anesthesia using 20 ml lidocaine 1% (Xylocitin, Jenapharm, Germany). First, a needle for local anesthesia was advanced toward the planned pathway. Second, following a small incision, the suspicious tumor was biopsied using a semi-automated side-cutting biopsy needle (Quick-Core Biopsy needle, Cook Medical USA) with a throw length of 2 cm. The interventional radiologist was responsible for selecting the size of the biopsy needle ranging from 14–18 Gauge. Afterwards, the correct positioning of the biopsy needle was confirmed by a CT scan. It was at the discretion of the interventional radiologist to take more than one sample of the tumor.
After completing the procedure, patients were instructed to rest for 24 hours. Blood pressure was measured hourly for a period of four hours. An expiratory chest X-ray was performed four hours after biopsy to exclude intervention-related complications in particular a pneumothorax.
The intervention was started with skin disinfection and subcutaneous local anesthesia using 20 ml lidocaine 1% (Xylocitin, Jenapharm, Germany). First, a needle for local anesthesia was advanced toward the planned pathway. Second, following a small incision, the suspicious tumor was biopsied using a semi-automated side-cutting biopsy needle (Quick-Core Biopsy needle, Cook Medical USA) with a throw length of 2 cm. The interventional radiologist was responsible for selecting the size of the biopsy needle ranging from 14–18 Gauge. Afterwards, the correct positioning of the biopsy needle was confirmed by a CT scan. It was at the discretion of the interventional radiologist to take more than one sample of the tumor.
After completing the procedure, patients were instructed to rest for 24 hours. Blood pressure was measured hourly for a period of four hours. An expiratory chest X-ray was performed four hours after biopsy to exclude intervention-related complications in particular a pneumothorax.
3
Motion Correction Evaluation on Brain Phantom
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The motion correction method was tested in real CT scans of a moving brain phantom. All experiments were performed on a Siemens Biograph 16 PET/CT scanner (Siemens Medical Solutions USA, Inc., Knoxville, TN), which incorporates a standard Siemens Somatom Sensation 16-slice helical CT scanner. The phantom, a 3D Hoffman brain phantom (Hoffman et al., 1990) , is usually filled with radioactive water for use in SPECT and PET, but in our CT imaging experiments it contained air. This gave the phantom a complex attenuation profile, due to multiple regions of zero attenuation coefficient surrounding perspex (soft tissue) structures. Its sharp edges and sudden changes of attenuation coefficient were expected to increase the sensitivity of calculated metrics to any distortion or misalignment of the motion corrected image relative to the reference image.
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