title: [The comparison between dose rates at the interventional reference point of the angiography systems in many facilities].
abstract: The management of the radiation dose is very important in interventional radiology (IVR), especially in percutaneous coronary intervention (PCI). Therefore, we measured entrance surface doses at the interventional reference point of 27 cardiac intervention procedures in 22 cardiac catheterization laboratories around Hiroshima, and compared these doses. Recently, for cardiac interventional radiology, the X-ray machines using flat-panel detectors (FPD) instead of image intensifiers (I.I.) is increasing; 13 systems used FPD and 14 systems used I.I. For fluoroscopy rate, the difference between laboratories was 9 times. For cineangiography rate, the difference between laboratories was 7 times. In addition, between both devices, the I.I. group is bigger than the FPD group. When comparing by the same condition, for the dose at the interventional reference point, no significant difference was detected between the FPD group and the I.I. group. This study shows that FPD is not available for reducing the radiation dose simply. Therefore, it is necessary that we think of the balance with image quality and radiation dose. The optimization of the devices and cardiac intervention procedures becomes very important.
authors.affiliation: Department of Medical Technology, Tsuchiya General Hospital.
authors.forename: Tooru
authors.initials: T
authors.lastname: Ishibashi
authors.forename: Naoyuki
authors.initials: N
authors.lastname: Imada
authors.forename: Yukari
authors.initials: Y
authors.lastname: Yamashita
authors.forename: Hiroya
authors.initials: H
authors.lastname: Asou
authors.forename: Yoriaki
authors.initials: Y
authors.lastname: Matsumoto
authors.forename: Satoshi
authors.initials: S
authors.lastname: Inada
authors.forename: Mizuho
authors.initials: M
authors.lastname: Okino
authors.forename: Haruki
authors.initials: H
authors.lastname: Nonaka
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Mizutani
mesh_terms: D017023:Coronary Angiography; D006801:Humans; D019047:Phantoms, Imaging; D011829:Radiation Dosage; D015641:Radiography, Interventional