PET/CT

http://www.asiancancer.com/technology-equipment/111.html 　　PET/CT: A technology in anatomical form to capture the images of function, metabolism and receptor
　　Scouts of tumor with more than 90% accurate diagnostic rate
　　What is PET/CT?
　　As a most high-end medical imaging devise in the world, PET/CT is currently the only technology in anatomic form to obtain images of function, metabolism and acceptor.
　　Featuring no wounds, it detects the minimum cancer focus and discovers potential cancerous focus early of high resolution and sensitivity. With accurate diagnostic rate of more than 90%, PET/CT plays an important role in planning treatments.
　　Principle
　　Tumor cell’s uncontrolled proliferation, which including increased DNA synthesis and raised consumption of metabolic substrates like amino acids and glucose, is a remarkable difference from normal tissue cells metabolism. Via tracing and labeling metabolic substrates or analogs by radionuclide like 18F-FDG(18F-2-fluro-D-deoxy-glucose), tumor metabolism can be depicted in images directly. Those images can precisely and actively reflect the difference of cell metabolism between tumor tissue and body normal tissue, and then early diagnosis, planning treatments and monitoring curative effect could be done accordingly.
　　Procedures for PET-CT
　　Before the exam, the patient fasts and forbids glucose transfusion for greater than 6 hours; meanwhile avoids doing strenuous or long-time exercise.
　　Nurse introduces exam procedures, measures patient’s height and weight, and then finishes the exam result.
　　Doctor talks to patient about his/her medical history, checks patent’s blood glucose, explains to patient about informed consent before patient or his/her family sign it.
　　Patient takes a rest for 45 minutes after PDG injection.
　　Patient keeps quiet, walks less and avoids talking to others as possible; he / she also have to urine completely before CET/PT.
　　PET-CT takes 30 minutes.
　　In order to finish the PET-CT for whole-body, 2.5-3 hours should be allowed in advance.

　　Advantages
　　Safe and no wounds: Radionuclide for PET lingers in candidate’s body so short that no harm would do to the human body.
　　High accuracy on diagnosing tumor benignancy, malignancy and staging: PET/CT can indicate tumor malignant degree while accurately detect the distant metastasis to lymph nodes.
　　PET/CT can cut done the treatment costs: general treatment costs could be cut down by inchoate discovery and inchoate cure of tumor or via PET/CT to obtain more precisely diagnosis to perform effective therapy