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| 1 | Significance of an additional unenhanced scan in computed tomography angiography of patients with suspected acute aortic syndrome显示文摘AIM To assess potential benefits of an additional unenhanced acquisition in computed tomography angiography(CTA) in patients with suspected acute aortic syndrome(AAS).METHODS A total of 103 aortic CTA(non-electrocardiography-gated, 128 slices) performed due to suspected AAS were retrospectively evaluated for acute aortic dissection(AAD), intramural hematoma(IMH), or penetrating aortic ulcer(PAU). Spiral CTA protocol consisted of an unenhanced acquisition and an arterial phase. If AAS was detected, a venous phase(delay, 90 s) was added. Images were evaluated for the presence and extent of AAD, IMH, PAU, and related complications. The diagnostic benefit of the unenhanced acquisition was evaluated concerning detection of IMH.RESULTS Fifty-six(30% women; mean age, 67 years; median, 68 years) of the screened individuals had AAD or IMH. A triphasic CT scan was conducted in 76.8%(n =43). 56% of the detected AAD were classified as Stanford type A, 44% as Stanford type B. 53.8% of the detected IMH were classified as Stanford type A, 46.2% as Stanford type B. There was no significant difference in the involvement of the ascending aorta between AAD and IMH(P = 1.0) or in the average age between AAD and IMH(P = 0.548), between Stanford type A and Stanford type B in general(P = 0.650) and between Stanford type A and Stanford type B within the entities of AAD and IMH(AAD: P = 0.785; IMH: P = 0.146). Only the unenhanced acquisitions showed a significant density difference between the adjacent lumen and the IMH(P = 0.035). Subadventitial hematoma involving the pulmonary trunk was present in 5 patients(16%) with Stanford A AAD. The difference between the median radiation exposure of a triphasic(2737 mGy*cm) compared to a biphasic CT scan(2135 mGy*cm) was not significant(P = 0.135).CONCLUSION IMH is a common and difficult to detect entity of AAS. An additional unenhanced acquisition within an aortic CTA protocol facilitates the detection of IMH. | Nikolaos Panagiotopoulos Felix Drüschler Martin Simon Florian M Vogt Sebastian Wolfrum Steffen Desch Doreen Richardt Jorg Barkhausen Peter Hunold | 2018 | World Journal of Radiology2018，10，11： | 2 |
| 2 | Distinction between Bunyaviridae genera by surface structure and comparison with Hantaan virus using negative stain electron microscopy显示文摘 | Martin ML Lindsey-Regnery H Sasso DR | 1985 | Arch Virol1985，86，12： | 1 |
| 3 | Breaking the mitochondrial barrier 显示文摘 | Martinou JC Green DR | 2001 | Nat Rev Mol Cell Biol2001，2，1： | 1 |
| 4 | Pneumonia in the Emergency Department 显示文摘 | Plouffe JF Martin DR | 2008 | Emerg Med Clin N Am2008，26，2： | 1 |
| 5 | Apoptosis as a goal of cancer therapy显示文摘 | Martin SJ Green DR | 1994 | Curr Opin Oncol1994，6，： | 1 |
| 6 | Breaking the mitochondrial barrier显示文摘 | Martinou JC Green DR | 2001 | Nat Rev Mol Cell Biol2001，2，1： | 1 |
| 7 | Dicing with death:dissecting the components of the apoptosis machinery显示文摘 | Martin SJ Green DR Cotter TG | 1994 | Tips1994，19，1： | 1 |
| 8 | Breaking the mitochondrial barrier显示文摘 | Martinou JC Green DR | 2001 | Nat Rev Mol Cell Biol2001，2，1： | 1 |
| 9 | In vitro intercellular adherence of Acanthamoeba castellanii:A scanning and transmission electron microscopy study显示文摘 | Ubelaker JE Moore MB Martin JH Silveny R Dougherty JM Meyer DR | 1991 | Cornea1991，10，4： | 1 |
| 10 | Quantitation of urinary glycosaminoglycans with Alcian blue:evaluation of the interference by Tamm-Horsfall glycoprotein显示文摘 | Martin A Erickson DR | 1996 | Clin Chim Acta1996，251，2： | 1 |
| 11 | Integron diversity in heavy-meatalcontaminated mine tailings and inferences about integron evolution显示文摘 | Nemergut DR Martin AP Schmidt SK | 2004 | Applied and Environmental Microbiology2004，70，2： | 1 |
| 12 | Apoptosis and cancer: the failure of controls on cell death and cell survival 显示文摘 | Martin SJ Green DR | 1995 | Crit Rev Oncol Hematol1995，18，2： | 1 |
| 13 | Hepatocyte growth factor inhibits apoptosis After ischemic renal injury in rats显示文摘 | Vijayan A Martin DR Sadow JL | 2001 | Am J Kidney Dis2001，38，2： | 1 |
| 14 | Michaelson S and maguire P:validation of the cardiovascular limitations and symptoms profile (CLASP) in chronic stable angina显示文摘 | Lewin RJP Thompson DR Martin CR | 2002 | J Cardiopulm Rehabi2002，22，3： | 1 |
| 15 | MR imaging of benign and malignant biliary conditiom显示文摘 | Costello JR Kalb B Martin DR | 2014 | Magn Reson Irrm:ng Clin N Am2014，22，3： | 1 |
| 16 | 2011, An introduction to ecological immunology显示文摘 | Martin LB Hawley DM Ardia DR | 2011 | Functional Ecology2011，25，1： | 1 |
| 17 | Effects of intrusion combined with anterior retraction on apical root resorption显示文摘 | Martins DR Tibola D Janson G | 2012 | Eur J Orthod2012，34，2： | 1 |
| 18 | lntegron diversity in heavy- metal - contaminated mine tailings and inferences about integron evolu- tion显示文摘 | Nemergut DR Martin AP Schmidt SK | 2004 | Appl Environ Microbiol2004，70，2： | 1 |
| 19 | Protease activation during apoptosis: death by a thousand cuts? 显示文摘 | Martin S J Green DR | 1995 | Cell1995，82，3： | 1 |
| 20 | Apoptosis as a goal of cancer therapy显示文摘 | Martin SJ Green DR | 1994 | Curr Opin Oncol1994，6，6： | 1 |
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