Clinical Application of IVR-CT (high-speed multi-detector CT)/Angio System in Abdominal Disorders

Yoshikawa, Masaharu; Kato, Harumi; Umekita, Hideo; Miyahara, Kouichi; Morita, Fuminori; Saisho, Hiromitsu

doi:10.6009/jjrt.kj00003110987

Cited by 2 publications

(1 citation statement)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The purpose of angiography has shifted from diagnosis to therapy [1,2].With regards to using the IVR-Computed Tomography (CT) /angiography system to treat HCC, CT is generally useful for visualizing three-dimensional position in addition to performing diagnosis with conventional angiography and IVR [3]. However, due to the sophistication and complexity of the method and the expansion of its application, exposure dose for patients is important [4].…”

Section: Introductionmentioning

confidence: 99%

Measurement of dose distribution during combined IVR procedure using the film method

Isobe

Takada²,

Mori³

et al. 2014

Progress in Nuclear Science and Technology

Self Cite

View full text Add to dashboard Cite

Computed tomography (CT)-guided interventional radiology (IVR) for treatment hepatocellular carcinoma has the advantage of verifying three dimensional location of a tumor. However, it is considered that radiation exposure to patients is increasing with the utilization of CT. Therefore, to evaluate the cumulative absorbed dose of the skin by combined IVR procedure is very important. In this study, the dose distribution of the combined exposure of IVR-CT system has been evaluated using a film method. We selected low-sensitivity films (XV-2, Kodak) that conventionally used in radiotherapy to detect an absorbed dose. These films were placed at three cross-sectional places (posterior side, center, and anterior side) of slab phantom. Irradiation by fluoroscopy, digital subtraction angiography (DSA), and CT was performed with normal clinical parameters. The density of those films was converted to absorbed dose with the conversion curve. The maximum dose was 943.9 mGy on the posterior side with combined all procedures. This film method can be used to detect hot spots of the absorbed dose in combined IVR procedure.

show abstract

Section: Introductionmentioning

confidence: 99%

Measurement of dose distribution during combined IVR procedure using the film method

Isobe

Takada²,

Mori³

et al. 2014

Progress in Nuclear Science and Technology

Self Cite

View full text Add to dashboard Cite

show abstract

Optimization of Radiographic Conditions for Computed Tomography (CT) during Hepatic Angiography by Interventional Radiology-CT Angio System

Ohshima

Sakamoto²,

Kobayashi³

et al. 2011

Nippon Hoshasen Gijutsu Gakkai Zasshi

View full text Add to dashboard Cite

Many cases in which the skin complication are caused by increased exposure dose to skin by interventional radiology (IVR) are reported. Therefore, the decrease of patient exposure dose at IVR is important. Patient exposure dose by using IVR-computed tomography (CT) unit is defined as the sum of exposure dose from both angiography and CT scanner. The dose decrease with the CT device was examined in this article. Since the images available during angiography have a high contrast compared to conventional CT scan, best applied standard deviation (SD) values are evaluated by using CT auto exposure control (CT-AEC). Although exposure dose decreased by varying SD values, contrast resolution was kept high. As a result, it became possible to adjust the dose from CT device to about a third by setting a proper CT-AEC value, which led to decrease of the total exposure dose.

show abstract

Clinical Application of IVR-CT (high-speed multi-detector CT)/Angio System in Abdominal Disorders

Cited by 2 publications

References 4 publications

Measurement of dose distribution during combined IVR procedure using the film method

Measurement of dose distribution during combined IVR procedure using the film method

Optimization of Radiographic Conditions for Computed Tomography (CT) during Hepatic Angiography by Interventional Radiology-CT Angio System

Contact Info

Product

Resources

About