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Journal Cover Acta Radiologica Open
  [2 followers]  Follow
  This is an Open Access Journal Open Access journal
   ISSN (Online) 2058-4601
   Published by Sage Publications Homepage  [853 journals]
  • Jugular venous reflux on magnetic resonance angiography and radionuclide

    • Authors: Fushimi, Y; Okada, T, Okuchi, S, Yamamoto, A, Kanagaki, M, Fujimoto, K, Togashi, K.
      Pages: 2058460116 - 2058460116
      Abstract: BackgroundThe relationship between the signal from retrograde venous flow on magnetic resonance angiography (MRA) and retrograde upward flow from the left brachiocephalic vein has not been explored.PurposeTo reveal the frequency of jugular venous reflux using MRA and nuclear venography in patients being evaluated for cerebral volume and blood flow.Material and MethodsA total of 229 patients with cognitive disturbance who had undergone brain magnetic resonance imaging (MRI) and single-photon emission computed tomography (SPECT) on the same day to evaluate cerebral blood flow were evaluated. Jugular venous reflux was measured on MRA and nuclear venography, which was conducted just after injection of N-isopropyl-123I-p-iodoamphetamine for the SPECT study.ResultsMRA showed jugular reflux in seven patients on the right side, and in 22 on the left. Nuclear venography showed jugular reflux in six patients on the right side, and in 20 on the left.ConclusionJugular venous reflux was observed mostly on the left side. Retrograde flow was observed on both MRA and nuclear venography in half of the cases, with the rest only on one of the modalities.
      PubDate: 2016-12-05T21:43:04-08:00
      DOI: 10.1177/2058460116681209
      Issue No: Vol. 5, No. 12 (2016)
  • Endovascular treatment of spontaneous isolated abdominal aortic dissection

    • Authors: Giribono, A. M; Ferrara, D, Spalla, F, Narese, D, Bracale, U, Pecoraro, F, Bracale, R, del Guercio, L, Bracale, U. M.
      Pages: 2058460116 - 2058460116
      Abstract: Isolated abdominal aortic dissection is a rare clinical disease representing only 1.3% of all dissections. There are a few case series reported in the literature. The causes of this pathology can be spontaneous, iatrogenic, or traumatic. Most patients are asymptomatic and symptoms are usually abdominal or back pain, while claudication and lower limb ischemia are rare. Surgical and endovascular treatment are two valid options with acceptable results. We herein describe nine cases of symptomatic spontaneous isolated abdominal aortic dissection, out of which four successfully were treated with an endovascular approach between July 2003 and July 2013. All patients were men, smokers, symptomatic (either abdominal or back pain or lower limb ischemia), with a history of high blood pressure, with a medical history negative for concomitant aneurysmatic dilatation or previous endovascular intervention. Diagnosis of isolated abdominal aortic dissection were established by contrast-enhanced computed tomography angiography (CTA) of the thoracic and abdominal aorta. All nine patients initially underwent medical treatment. In four symptomatic cases, non-responsive to medical therapy, bare-metal stents or stent grafts were successfully positioned. All patients completed a CTA follow-up of at least 12 months, during which they remained symptom-free. Endovascular management of this condition is associated with a high rate of technical success and a low mortality; therefore, it can be considered the treatment of choice when it is feasible.
      PubDate: 2016-12-05T21:43:04-08:00
      DOI: 10.1177/2058460116681042
      Issue No: Vol. 5, No. 12 (2016)
  • A computer-assisted systematic quality monitoring method for cervical hip
           fracture radiography

    • Authors: Geijer, M; Laurin, O, Johnsson, R, Laurin, S.
      Pages: 2058460116 - 2058460116
      Abstract: BackgroundA thorough quality analysis of radiologic performance is cumbersome. Instead, the prevalence of missed cervical hip fractures might be used as a quality indicator.PurposeTo validate a computer-based quality study of cervical hip fracture radiography.Material and MethodsTrue and false negative and positive hip trauma radiography during 6 years was assessed manually. Patients with two or more radiologic hip examinations before surgery were selected by computer analysis of the databases. The first of two preoperative examinations might constitute a missed fracture. These cases were reviewed.ResultsOut of 1621 cervical hip fractures, manual perusal found 51 (3.1%) false negative radiographic diagnoses. Among approximately 14,000 radiographic hip examinations, there were 27 (0.2%) false positive diagnoses. Fifty-seven percent of false negative reports were occult fractures, the other diagnostic mistakes. There were no significant differences over the years. Diagnostic sensitivity was 96.9% and specificity 99.8%. Computer-assisted analysis with a time interval of at least 120 days between the first and the second radiographic examination discovered 39 of the 51 false negative reports.ConclusionCervical hip trauma radiography has high sensitivity and specificity. With computer-assisted analysis, 76% of false negative reports were found.
      PubDate: 2016-12-05T21:43:04-08:00
      DOI: 10.1177/2058460116674749
      Issue No: Vol. 5, No. 12 (2016)
School of Mathematical and Computer Sciences
Heriot-Watt University
Edinburgh, EH14 4AS, UK
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Fax: +00 44 (0)131 4513327
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