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Arteriography

The Experts below are selected from a list of 165 Experts worldwide ranked by ideXlab platform

Jae Hyung Park – 1st expert on this subject based on the ideXlab platform

  • cone beam ct hepatic Arteriography in chemoembolization for hepatocellular carcinoma angiographic image quality and its determining factors
    Journal of Vascular and Interventional Radiology, 2014
    Co-Authors: Jin Wook Chung, Jae Hyung Park

    Abstract:

    Abstract Purpose To analyze image quality and the factors that determine it for cone-beam computed tomography (CT) hepatic Arteriography in chemoembolization for hepatocellular carcinoma (HCC). Materials and Methods From September 2009–December 2010, 399 consecutive patients referred for chemoembolization of HCC were scheduled for cone-beam CT scan. There were 12 patients (3%) excluded because of difficulty with breath-hold. Of the 387 patients who underwent cone-beam CT hepatic Arteriography, 100 patients were ultimately included in the study according to inclusion criteria. Maximum intensity projection images were scored for image quality of each segmental hepatic artery. Potential determining factors for image quality were diaphragmatic motion, portal vein enhancement, and hepatic artery-to-parenchyma enhancement ratio. The flow rate of contrast media, x-ray delay, and location of the catheter tip were also evaluated. Results It was possible to trace at least subsegmental hepatic arteries in 625 of 700 segments (89.3%) on cone-beam CT hepatic Arteriography. Diaphragmatic motion, prominent portal vein enhancement, and low hepatic artery-to-parenchyma enhancement ratio worsened image quality ( P P = .022, and P = .017). Owing to cardiac motion artifacts, image quality of the left lateral segments (S2 and S3) was poorer compared with the remaining hepatic segments (S4–S8). Conclusions In most cases, the quality of cone-beam CT hepatic Arteriography images was good enough to trace subsegmental hepatic arteries at a minimum. Respiratory and cardiac motion, portal vein enhancement, and hepatic artery-to-parenchyma enhancement ratio significantly affected the image quality of cone-beam CT hepatic Arteriography.

Jin Wook Chung – 2nd expert on this subject based on the ideXlab platform

  • cone beam ct hepatic Arteriography in chemoembolization for hepatocellular carcinoma angiographic image quality and its determining factors
    Journal of Vascular and Interventional Radiology, 2014
    Co-Authors: Jin Wook Chung, Jae Hyung Park

    Abstract:

    Abstract Purpose To analyze image quality and the factors that determine it for cone-beam computed tomography (CT) hepatic Arteriography in chemoembolization for hepatocellular carcinoma (HCC). Materials and Methods From September 2009–December 2010, 399 consecutive patients referred for chemoembolization of HCC were scheduled for cone-beam CT scan. There were 12 patients (3%) excluded because of difficulty with breath-hold. Of the 387 patients who underwent cone-beam CT hepatic Arteriography, 100 patients were ultimately included in the study according to inclusion criteria. Maximum intensity projection images were scored for image quality of each segmental hepatic artery. Potential determining factors for image quality were diaphragmatic motion, portal vein enhancement, and hepatic artery-to-parenchyma enhancement ratio. The flow rate of contrast media, x-ray delay, and location of the catheter tip were also evaluated. Results It was possible to trace at least subsegmental hepatic arteries in 625 of 700 segments (89.3%) on cone-beam CT hepatic Arteriography. Diaphragmatic motion, prominent portal vein enhancement, and low hepatic artery-to-parenchyma enhancement ratio worsened image quality ( P P = .022, and P = .017). Owing to cardiac motion artifacts, image quality of the left lateral segments (S2 and S3) was poorer compared with the remaining hepatic segments (S4–S8). Conclusions In most cases, the quality of cone-beam CT hepatic Arteriography images was good enough to trace subsegmental hepatic arteries at a minimum. Respiratory and cardiac motion, portal vein enhancement, and hepatic artery-to-parenchyma enhancement ratio significantly affected the image quality of cone-beam CT hepatic Arteriography.

Kenichi Takayasu – 3rd expert on this subject based on the ideXlab platform

  • Sensitivity of superselective Arteriography for small hepatocellular carcinoma compared with proximal Arteriography and computed tomography during superselective Arteriography.
    Japanese Journal of Clinical Oncology, 2002
    Co-Authors: Kenichi Takayasu, Tetsuo Maeda, Ryoko Iwata

    Abstract:

    PURPOSE: To obtain successful arterial chemoembolization for hepatocellular carcinoma (HCC), we evaluated the sensitivity of proximal Arteriography, superselective (subsegmental or more distal branch) Arteriography and computed tomography (CT) during superselective Arteriography and assessed the method for the injection of contrast medium. METHODS: Thirty-two patients with 38 HCCs (< or = 5 cm) with a mean diameter of 2.2 cm underwent digital subtraction Arteriography of proximal and superselective Arteriography. In addition, they also had helical CT during superselective Arteriography. The contrast medium was injected with a mechanical injector (n = 6 lesions) or by hand (n = 32) for superselective Arteriography and CT during superselective Arteriography. The amount of contrast medium used for superselective Arteriography and CT during superselective Arteriography with the mechanical injector was 3.5 times and 9 times that with manual injection, respectively. RESULTS: Overall, 31 lesions (81.6%) were detected by proximal Arteriography, 25 (65.8%) by superselective Arteriography and 35 (92.1%) by CT during superselective Arteriography. CT during superselective Arteriography was significantly superior to superselective Arteriography (P = 0.005). In both studies, manual injection of contrast medium had a significantly higher sensitivity than mechanical injection (P = 0.013). CONCLUSION: To detect small HCC, CT during superselective Arteriography showed significantly higher sensitivity than superselective Arteriography. Manual injection of contrast medium was significantly superior to mechanical injection. Therefore, manual injection CT during superselective Arteriography is recommended for accurately targeted, transarterial chemoembolization therapy.

  • early hepatocellular carcinoma appearance at ct during arterial portography and ct Arteriography with pathologic correlation
    Radiology, 1995
    Co-Authors: Kenichi Takayasu, Yukio Muramatsu, Hiroyoshi Furukawa, Fumihiko Wakao, Noriyuki Moriyama, Tadatoshi Takayama, Susumu Yamasaki, Michiie Sakamoto, Setsuo Hirohashi

    Abstract:

    PURPOSE: To use computed tomography (CT) during arterial portography (CTAP) and CT Arteriography to compare the hemodynamic properties of early hepatocellular carcinoma (HCC) with those of small HCC. MATERIALS AND METHODS: Forty-four early HCCs (mean diameter, 1.5 cm) in 37 patients (26 men and 11 women aged 52-74 years; mean age, 59.2 years) were studied. CTAP was performed on 35 early HCCs, CT Arteriography on 20, and both studies on 11. CTAP, CT Arteriography, or both were performed on 90 small HCCs (mean diameter, 2.0 cm) in 57 patients (44 men and 13 women aged 48-71 years; mean age, 61 years). The findings for small HCC were compared with those for early HCC. RESULTS: CTAP depicted 23 early HCCs as hypoattenuating masses and 12 as isoattenuating. CT Arteriography depicted 11 early HCCs as hypoattenuating masses, six as isoattenuating, and three as hyperattenuating. CTAP depicted 85 of 88 small HCCs as hypoattenuating masses and three as isoattenuating. CT Arteriography depicted 13 of 14 small HCCs a…