title: PET/CT today: system and its impact on cancer diagnosis.
abstract: Over the past six years, PET/CT has spread rapidly and replaced conventional PET. Although PET/CT is a combination of PET for functional information and CT for morphological information, their combination is synergistic. PET/CT fusion images result in higher diagnostic accuracy with fewer equivocal findings. This results in a greater impact on cancer diagnosis. With attenuation correction performed by the CT component, PET/CT can provide higher quality images over shorter examination times than conventional PET. As with all modalities, PET/CT has several characteristic artifacts such as misregistration due to respiration, overattenuation correction due to metals, etc. Awareness of these pitfalls will help the imaging physician use PET/CT effectively in daily practice.
authors.affiliation: Medical Cooperation Teishinkai Central CI clinic. tsukamoto@teishinkai.jp
authors.forename: Eriko
authors.initials: E
authors.lastname: Tsukamoto
authors.forename: Shinji
authors.initials: S
authors.lastname: Ochi
mesh_terms: D006801:Humans; D007089:Image Enhancement / Q000295:instrumentation* / Q000379:methods*; D007090:Image Interpretation, Computer-Assisted / Q000379:methods; D009369:Neoplasms / Q000175:diagnosis*; D049268:Positron-Emission Tomography / Q000295:instrumentation* / Q000379:methods* / Q000639:trends; D013382:Subtraction Technique; D014057:Tomography, X-Ray Computed / Q000295:instrumentation* / Q000379:methods* / Q000639:trends