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[Examination of patient skin dose during abdominal interventional radiology using a GAF system]. 2007

Akitami Matsushita, and Toshizo Katsuda, and Taketo Kawamura, and Hiroyuki Wakasa, and Shigehumi Kadohisa, and Yoshitada Nakagiri
Department of Radiology, Okayama Kyokuto Hospital, Japan.

Radiation-induced skin injury caused by interventional radiology(IVR)is a deterministic effect. If exposure dose exceeds threshold dose, injuries may occur. It therefore is important to understand the maximum exposure dose in skin. The purpose of this study was to determine the maximum exposure dose and its dose distribution. Moreover, to analyze the factors from measuring the absorbed dose in the incoming radiation side, a film-type dosimeter was used. When the measured results were determined in terms of the clinical aspect, fluoroscopic time(total time)in procedure, it ranged from 3.3 to 64.0 minutes, and DSA images obtained ranged from 8 to 280 images. Absorbed dose ranged from 0.3 to 6.0 Gy, with an average dose of 3.2 Gy. It thus exceeded 2 or 3 Gy, which was the threshold dose of temporary erythematic or depilation in 10 of 14 cases. The maximum dose was 6.0 Gy for a procedure of percutaneous transhepatic obliteration. The maximum exposure dose can be determined objectively by using a film-type dosimeter. It was also possible to grasp the overall dose distribution visually.

UI MeSH Term Description Entries
D011829 Radiation Dosage The amount of radiation energy that is deposited in a unit mass of material, such as tissues of plants or animal. In RADIOTHERAPY, radiation dosage is expressed in gray units (Gy). In RADIOLOGIC HEALTH, the dosage is expressed by the product of absorbed dose (Gy) and quality factor (a function of linear energy transfer), and is called radiation dose equivalent in sievert units (Sv). Sievert Units,Dosage, Radiation,Gray Units,Gy Radiation,Sv Radiation Dose Equivalent,Dosages, Radiation,Radiation Dosages,Units, Gray,Units, Sievert
D005373 Film Dosimetry Use of a device (film badge) for measuring exposure of individuals to radiation. It is usually made of metal, plastic, or paper and loaded with one or more pieces of x-ray film. Film Badge Dosimetry,Film Badge,Badge Dosimetries, Film,Badge Dosimetry, Film,Badge, Film,Badges, Film,Dosimetries, Film,Dosimetries, Film Badge,Dosimetry, Film,Dosimetry, Film Badge,Film Badge Dosimetries,Film Badges,Film Dosimetries
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000005 Abdomen That portion of the body that lies between the THORAX and the PELVIS. Abdomens
D012867 Skin The outer covering of the body that protects it from the environment. It is composed of the DERMIS and the EPIDERMIS.
D015641 Radiography, Interventional Diagnostic and therapeutic procedures that are invasive or surgical in nature, and require the expertise of a specially trained radiologist. In general, they are more invasive than diagnostic imaging but less invasive than major surgery. They often involve catheterization, fluoroscopy, or computed tomography. Some examples include percutaneous transhepatic cholangiography, percutaneous transthoracic biopsy, balloon angioplasty, and arterial embolization. Interventional Radiography

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