• 제목/요약/키워드: Radiology department

검색결과 9,077건 처리시간 0.03초

Complex Hemangioma of the Breast: Case Report, with Imaging Findings

  • Lee, Joo Yeon;Cha, Joo Hee;Kim, Hak Hee;Shin, Hee Jung;Chae, Eun Young;Choi, Woo Jung;Song, Min Jeong
    • Investigative Magnetic Resonance Imaging
    • /
    • 제19권2호
    • /
    • pp.131-135
    • /
    • 2015

  • Vascular tumors in the breast are rare, and most can be classified as being either angiosarcomas or hemangiomas. Hemangiomas are benign vascular tumors that are usually identified incidentally. Here, we are reporting on a case of a complex hemangioma of the breast, and describing the mammography, ultrasonography, and magnetic resonance imaging findings for this patient.

  • https://doi.org/10.13104/imri.2015.19.2.131 인용 PDF

Low-Tube-Voltage CT Urography Using Low-Concentration-Iodine Contrast Media and Iterative Reconstruction: A Multi-Institutional Randomized Controlled Trial for Comparison with Conventional CT Urography

  • Kim, Sang Youn;Cho, Jeong Yeon;Lee, Joongyub;Hwang, Sung Il;Moon, Min Hoan;Lee, Eun Ju;Hong, Seong Sook;Kim, Chan Kyo;Kim, Kyeong Ah;Park, Sung Bin;Sung, Deuk Jae;Kim, Yongsoo;Kim, You Me;Jung, Sung Il;Rha, Sung Eun;Kim, Dong Won;Lee, Hyun;Shim, Youngsup;Hwang, Inpyeong;Woo, Sungmin;Choi, Hyuck Jae
    • Korean Journal of Radiology
    • /
    • 제19권6호
    • /
    • pp.1119-1129
    • /
    • 2018

  • Objective: To compare the image quality of low-tube-voltage and low-iodine-concentration-contrast-medium (LVLC) computed tomography urography (CTU) with iterative reconstruction (IR) with that of conventional CTU. Materials and Methods: This prospective, multi-institutional, randomized controlled trial was performed at 16 hospitals using CT scanners from various vendors. Patients were randomly assigned to the following groups: 1) the LVLC-CTU (80 kVp and 240 mgI/mL) with IR group and 2) the conventional CTU (120 kVp and 350 mgI/mL) with filtered-back projection group. The overall diagnostic acceptability, sharpness, and noise were assessed. Additionally, the mean attenuation, signal-to-noise ratio (SNR), contrast-to-noise ratio (CNR), and figure of merit (FOM) in the urinary tract were evaluated. Results: The study included 299 patients (LVLC-CTU group: 150 patients; conventional CTU group: 149 patients). The LVLC-CTU group had a significantly lower effective radiation dose ($5.73{\pm}4.04$ vs. $8.43{\pm}4.38mSv$) compared to the conventional CTU group. LVLC-CTU showed at least standard diagnostic acceptability (score ${\geq}3$), but it was non-inferior when compared to conventional CTU. The mean attenuation value, mean SNR, CNR, and FOM in all pre-defined segments of the urinary tract were significantly higher in the LVLC-CTU group than in the conventional CTU group. Conclusion: The diagnostic acceptability and quantitative image quality of LVLC-CTU with IR are not inferior to those of conventional CTU. Additionally, LVLC-CTU with IR is beneficial because both radiation exposure and total iodine load are reduced.

  • https://doi.org/10.3348/kjr.2018.19.6.1119 인용 KSCI