Today 128 slice CT systems (DSCT) allow whole-body examinations with sub millimeter resolution in short scan times [1], [2]. The second-generation dual-source CT (128-slice CT) houses two tube-detector systems mounted at an angular off-set of 95° within the same gantry that simultaneously revolve around the patient's body.
A positron emission tomography (PET) scan is an imaging test that can help reveal the metabolic or biochemical function of your tissues and organs. The PET scan uses a radioactive drug called a tracer to show both typical and atypical metabolic activity. A PET scan can often detect the atypical metabolism of the tracer in diseases before the A single-slice helical CT scanner requires approximately 20–25 s to scan the entire liver, whereas with multislice CT, depending on the pitch and slice thickness, the entire liver can be scanned in 5–15 s. For most protocols a scan delay of 70 s is appropriate with conventional rates of contrast injection of 2–4 ml/s. Several meta-analyses of studies on the use of 64-slice CT reported mean sensitivities ranging from 85 to 99% and specificities ranging from 86 to 96% . However, the use of beta blockers to lower the heart rate to less than 65 beats per minute (bpm) is common in 64-slice CT imaging of patients with suspected CAD.This 128-Slice CT scan is a non-invasive diagnostic test that uses X-rays to produce detailed cross-sectional images of the body. With 128 detectors, this type of CT scan is capable of producing high-resolution images of the body in a short amount of time, allowing for more precise diagnosis of medical conditions. The high number of detectors
High contrast of left ventricular myocardium achieved on Biograph mCT leads to sharp definition of ventricular walls and ischemic segments in an obese patient. Biograph mCT PET/CT. PET. Scan acquisition: 200 x 200 matrix, OSEM3D 4i24s. Scan time: 6 minutes. Injected dose: Fludeoxyglucose F 18 ( 18 F FDG) Injection [a] 20 mCi (740 MBq) CT.