Single-photon emission computed tomography (SPECT) studies were performed in interictal stage after ≥24 h of no seizure activity. EEG examination and MRI were performed in 2 weeks. Brain perfusion single-photon emission computed tomography (SPECT) imaging was performed 30 min following intravenous injection of 555 MBq of 99mTc-ECD (99mTc, HTA Co., Ltd.; ECD, Beijing Shihong Pharma Centre, China) in a dimly lit and quiet room with the patients lying supine with eyes closed. A 20% window centered on the 140 keV photo peak of 99mTc was used. Projection data were obtained using a 2-head SPECT (Infinia Vc Hawkeye, GE, USA) with low-energy-high-resolution parallel hole collimators (128×128 matrix, 60 projections over 360° rotation, steps of 6° for 30 s per projection, zoom factor 1.5). Images were reconstructed by filtered back projection with a Butterworth filter of cutoff frequency 0.5 and order 10. Attenuation was corrected using Chang’s method (attenuation coefficient, 0.12/cm). No attenuation correction was applied.
Infinia vc hawkeye
Manufactured by GE Healthcare
Sourced in United States
The Infinia Vc Hawkeye is a medical imaging device designed for nuclear medicine procedures. It combines a gamma camera with a computed tomography (CT) system to provide high-quality diagnostic images.
Automatically generated - may contain errors
Lab products found in correlation
2 protocols using infinia vc hawkeye
1
SPECT Imaging of Brain Perfusion
2
Tracing 75Se-Selenomethionine Distribution
Check if the same lab product or an alternative is used in the 5 most similar protocols
+ Expand
Each participant arrived at the laboratory after having fasted for at least 10 h. A cannula was inserted into the cubital vein for blood sampling. Lying supine on the gamma camera couch, the participants then ingested 3•6 (SD 0•3) MBq of 75 Se-SeMet, comprising 29 μg Se dissolved in 350 ml of water. The solution was ingested in <15 s. The distribution of 75 Se-SeMet was investigated for the following 2 h using dynamic gamma camera imaging. Thus, 120 1-min images of the abdominal region were acquired in both anterior and posterior projections. Imaging was performed with a dual-head gamma camera equipped with medium-energy, all-purpose collimators (Infinia VC HawkEye; GE Medical Systems Inc.) and connected to a dedicated image processing system (Xeleris; GE Medical Systems Inc.). The images were acquired in a 128 × 128 matrix, with each pixel measuring 4•4 × 4•4 mm and using 136 keV (± 10 %) and 272 keV (± 12•5 %) energy windows.
During gamma camera imaging, 10-ml blood samples were collected at 10-min intervals to monitor the plasma concentration of 75 Se.
During gamma camera imaging, 10-ml blood samples were collected at 10-min intervals to monitor the plasma concentration of 75 Se.
About PubCompare
Our mission is to provide scientists with the largest repository of trustworthy protocols and intelligent analytical tools, thereby offering them extensive information to design robust protocols aimed at minimizing the risk of failures.
We believe that the most crucial aspect is to grant scientists access to a wide range of reliable sources and new useful tools that surpass human capabilities.
However, we trust in allowing scientists to determine how to construct their own protocols based on this information, as they are the experts in their field.
Ready to get started?
Sign up for free.
Registration takes 20 seconds.
Available from any computer
No download required
Revolutionizing how scientists
search and build protocols!