title: Clinical impact of multidetector row computed tomography before bronchial artery embolization in patients with hemoptysis: a prospective study.
abstract: OBJECTIVE
  To evaluate prospectively the role and impact of multidetector row computed tomography (MDCT) before bronchial artery embolization (BAE) in patients with hemoptysis.
  
  
  METHODS
  MDCT of the thorax was performed in 27 patients (21 men, 6 women; age range, 22-70 years; mean, 39 years) with hemoptysis who were referred for BAE. Transverse, multiplanar reconstruction, and 3-dimensional reconstruction (maximum intensity projection and volume rendered) images were analysed to identify the abnormal hypertrophied bronchial and nonbronchial systemic arteries causing hemoptysis, their origin and course were noted. Digital subtraction angiography was performed with the knowledge of findings of MDCT. Selective arteriogram of abnormal bronchial as well as nonbronchial arteries was performed. Embolization was attempted in 25 of these patients (92.6%) by using polyvinyl alcohol particles (350-500 μm), Gelfoam or Embospheres (400-700 μm). Follow-up was done for a mean period of 20.5 months.
  
  
  RESULTS
  Based on MDCT, 2 of 27 patients were found unsuitable for BAE. On computed tomography, 38 arteries (27 bronchial and 11 nonbronchial systemic arteries) were identified as abnormal hypertrophied vessels. On angiography, 34 of these arteries (25 bronchial and 9 nonbronchial systemic arteries) were found to be responsible for hemoptysis. Three of these arteries could not be evaluated during angiography, and 1 artery that was identified as abnormal on computed tomography was found normal on angiography. All 25 bronchial and 9 nonbronchial systemic arteries that cause hemoptysis were detected at MDCT. Embolization was successful in 23 of 25 patients.
  
  
  CONCLUSIONS
  MDCT enables detection and depiction of all bronchial and nonbronchial systemic arteries causing hemoptysis.
authors.affiliation: Department of Radiodiagnosis, The Ottawa Hospital, Ottawa, Ontario, Canada.
authors.forename: Mudit
authors.initials: M
authors.lastname: Gupta
authors.forename: Deep Narayan
authors.initials: DN
authors.lastname: Srivastava
authors.forename: Ashu
authors.initials: A
authors.lastname: Seith
authors.forename: Sanjay
authors.initials: S
authors.lastname: Sharma
authors.forename: Sanjay
authors.initials: S
authors.lastname: Thulkar
authors.forename: Rashmi
authors.initials: R
authors.lastname: Gupta
mesh_terms: D000180:Acrylic Resins / Q000627:therapeutic use; D000328:Adult; D000368:Aged; D015901:Angiography, Digital Subtraction; D001981:Bronchial Arteries / Q000000981:diagnostic imaging*; D004621:Embolization, Therapeutic / Q000379:methods*; D005260:Female; D005780:Gelatin / Q000627:therapeutic use; D005781:Gelatin Sponge, Absorbable / Q000627:therapeutic use; D006469:Hemoptysis / Q000000981:diagnostic imaging* / Q000628:therapy*; D006801:Humans; D021621:Imaging, Three-Dimensional; D008297:Male; D008875:Middle Aged; D061330:Multidetector Computed Tomography; D011142:Polyvinyl Alcohol / Q000627:therapeutic use; D011446:Prospective Studies; D011857:Radiographic Image Interpretation, Computer-Assisted; D016896:Treatment Outcome
chemical_list: D000180:Acrylic Resins; C496735:trisacryl gelatin microspheres; D005780:Gelatin; D011142:Polyvinyl Alcohol