The purpose of this review on SPECT/CT radiation dosimetry is to provide updated information on the total effective dose and total equivalent doses to critical organs due to both radiopharmaceutical administration and CT scan modality for both adults and pediatric patients. The use of new solid-...
Near to metallic implants, CT quality is considerably degraded by streak artifacts and that of MRI by susceptibility phenomena, thus reducing the accuracy of these two modalities in differentiating between the above-described causes of pain after spond- ylodesis. Bone scintigraphy, which is either ...
SPECT was performed after CT scanning with same bed position using the following parameters: four high-resolution conical collimators with 9-pinhole plates; energy peak, 140 keV; window width, 10%; resolution, 1 mm/pixel; matrix, 256 × 256; and scan time, 35 s/projection,...
When added to a bone scan, the specificity moved from 50% for three phase bone scans alone to 86% with the addition of SPECT/CT.2 Labeled white blood cells (WBCs) techniques using Technetium-99m (99mTc) or Indium-111 (111In) provide improved specificity over bone scintigraphy, however, ...
Following intravenous injection of 10 μ l/g of Fenestra VC, CT was performed at a mean time of 10 minutes post-injection with acquisition time 270 s per CT scan. The analysis software HiSPECT (Version 1.0, Bioscan Inc., Poway, CA, USA) and InVivoScope (Version 1.43, Bio...
CED: Convolutional Encoder Decoder, GAN: Generative Adversarial Network, NAC: Non-Attenuation Corrected, sCT: Pseudo CT, VOI: Volume of Interest, HU: Hounsfield Unit, MAE: Mean Absolute Error, ACF: Attenuation correction factor, CV: Cross-Validation, TOF: Time of Flight, ME: Mean Error, RE:...
Planar post-ablation 131I-iodide scan (a) shows multiple sites of intense uptake in the neck and upper mediastinum consistent with known metastatic spread. There is an additional area of focal tracer accumulation of moderate intensity in the right pelvis (arrow). SPECT/low-dose CT slices and ...
CT: Computed tomography CTAC: Cetyltrimethylammonium chloride CuS NPs: Copper sulfide nanoparticles Cys: Cysteine DAP: Diaminopropionic acid DARPins G3: Designed ankyrin repeat proteins DBCO: Dibenzocyclooctyne Df (DFO): Deferoxamine DO3A: 1,4,7-Tris(carboxymethylaza)cyclododecane-10-azaac...
After this scan was completed (40-50 seconds), the table was brought back out of the scanner and the 12-lead ECG system reconnected while the patient remained supine on the table for recovery monitoring for 4-6 minutes. After sufficient recovery to near resting heart rate and blood pressure...
An intravenous injection of 740 (± 52) MBq DPD was performed 3 h prior to the acquisition of a 256 × 1024 matrix whole-body planar image, followed by a non-contrast, low-dose CT scan. Following the CT, a SPECT acquisition was performed in 60 projections, 360° camera rotation, ...