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Rengo M, Bellini D, De Cecco CN, Osimani M, Vecchietti F, Caruso D, Maceroni MM, Lucchesi P, Iafrate F, Palombo E, Paolantonio P, Ferrari R, Laghi A. The optimal contrast media policy in CT of the liver. Part II: Clinical protocols. Acta Radiol 2011; 52:473-80. [PMID: 21498280 DOI: 10.1258/ar.2011.100500] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
The advent of multidetector computed tomography (MDCT) revolutionized abdominal imaging. In particular, the definitive assessment of CT injection protocols, for the evaluation of the liver parenchyma, is still a critical issue for radiologists. Over the last years, this feature encouraged several authors to address their efforts to find the most accurate delay between the contrast medium injection and the effective scan-start, for the identification and characterization of liver lesions. Technological developments of the present century such as number of slices, submillimetric collimation, and the use of multiple dynamic post-contrast phases per single examination, may all contribute to increase the radiation exposure of single patients. The aim of this review is to propose liver imaging protocols, taking into consideration different clinical needs such as patients with chronic liver disease, healthy patients with focal liver lesion, and oncological patients to minimize radiation exposure. Finally, two recent innovations in MDCT which illustrate the potential application of multi-energy computed tomography (MECT) and perfusion computed tomography (CTp) when evaluating liver parenchyma will be discussed in a short closing paragraph.
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Affiliation(s)
- Marco Rengo
- Department of Radiological, Oncological and Pathological Sciences, University of Rome Sapienza, Polo Pontino, Latina
| | - Davide Bellini
- Department of Radiological, Oncological and Pathological Sciences, University of Rome Sapienza, Polo Pontino, Latina
| | - Carlo N De Cecco
- Department of Radiological Sciences, University of Rome ‘Sapienza’, St Andrea Hospital, Rome
| | - Marcello Osimani
- Department of Radiological, Oncological and Pathological Sciences, University of Rome Sapienza, Polo Pontino, Latina
| | - Fabrizio Vecchietti
- Department of Radiological, Oncological and Pathological Sciences, University of Rome Sapienza, Polo Pontino, Latina
| | - Damiano Caruso
- Department of Radiological, Oncological and Pathological Sciences, University of Rome Sapienza, Polo Pontino, Latina
| | - Marco M Maceroni
- Department of Radiological, Oncological and Pathological Sciences, University of Rome Sapienza, Polo Pontino, Latina
| | - Paola Lucchesi
- Department of Radiological, Oncological and Pathological Sciences, University of Rome Sapienza, Polo Pontino, Latina
| | - Franco Iafrate
- Department of Radiological Sciences, Sapienza - Università di Roma, Rome
| | - Erica Palombo
- Department of Radiological, Oncological and Pathological Sciences, University of Rome Sapienza, Polo Pontino, Latina
| | - Pasquale Paolantonio
- Department of Radiological Sciences, Azienda Ospedaliera San Giovanni – Addolorata, Rome, Italy
| | - Riccardo Ferrari
- Department of Radiological Sciences, Azienda Ospedaliera San Giovanni – Addolorata, Rome, Italy
| | - Andrea Laghi
- Department of Radiological, Oncological and Pathological Sciences, University of Rome Sapienza, Polo Pontino, Latina
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Ko SF, Wan YL, Lee TY, Ng SH, Lin JW, Chen WJ. CT features of calcifications in abdominal malignant fibrous histiocytoma. Clin Imaging 1998; 22:408-13. [PMID: 9876909 DOI: 10.1016/s0899-7071(98)00066-7] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The purpose of this study was to describe the computed tomographic (CT) features of intralesional calcifications in abdominal malignant fibrous histiocytomas (MFH). Forty-three pathologically proven abdominal MFH with preoperative CT were retrospectively reviewed, of which seven tumors with intralesional calcifications were studied with pathohistologic correlation. All seven calcified abdominal MFH belonged to the storiform-pleomorphic subtype with peripherally located calcifications that appeared as either lumpy (three cases) or ringlike (four cases), which were due to the presence of variable amounts of osseous (six cases) and chondroid metaplasia (two cases). About 16% of abdominal MFH, especially the storiform-pleomorphic subtype, exhibited metaplastic calcifications which were characteristically located at the periphery of the tumor and appeared as either lumpy or ringlike on CT.
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Affiliation(s)
- S F Ko
- Department of Radiology, Chang Gung Memorial Hospital at Kaohsiung, Taiwan
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