Diagnostic value of CT virtual intravascular endoscopy in aortic stent-grafting

ZH Sun, John Winder, BE Kelly, PK Ellis, PT Kennedy, DG Hirst

    Research output: Contribution to journalArticle

    61 Citations (Scopus)

    Abstract

    Purpose: To investigate the diagnostic value of postprocessing techniques for 3-dimensional (3D) computed tomography (CT), with emphasis on CT virtual intravascular endoscopy (VIE), in patients with abdominal aortic aneurysms (AAA) treated with suprarenal stent-grafts. Methods: The preprocedural and postprocedural CT datasets from 47 AAA patients (40 men; mean age 75 years, range 61-87) undergoing aortic stent-grafting with suprarenal fixation were examined. The CT datasets were processed to create various 3D reconstructions: shaded surface display (SSD), maximum intensity projection (MIP), and VIE. Three independent radiologists assessed various diagnostic parameters for each 3D reconstruction method and compared them to axial CT images. Results: Scores for VIE reconstructions were inferior to axial CT images in the visualization of normal arterial branches, measurement of the aneurysm diameter and neck length, as well as assessment of vessel patency and presence of endoleaks. VIE was rated superior to axial CT and other 3D imaging methods in visualizing the configuration of stent struts relative to the aortic branch ostia and the number of stent wires crossing the ostia in >80% of cases. Conclusions: VIE was not found to play a role in most preoperative situations compared to axial CT images. However, VIE provided additional postgrafting information on the 3D relationship of the suprarenal stent struts to the aortic branch ostia (in particular the renal and superior mesenteric arteries). VIE findings might aid clinicians in accurately assessing the effect of suprarenal stent-grafting on the renal arteries.
    LanguageEnglish
    Pages13-25
    JournalJournal of Endovascular Therapy
    Volume11
    Issue number1
    Publication statusPublished - Feb 2004

    Fingerprint

    Endoscopy
    Stents
    Tomography
    Abdominal Aortic Aneurysm
    Endoleak
    Superior Mesenteric Artery
    Renal Artery
    Aneurysm
    Neck
    Transplants
    Kidney

    Keywords

    • abdominal aortic aneurysm
    • suprarenal stent-grafts
    • computed tomography
    • 3D reconstructions
    • virtual endoscopy
    • renal artery
    • stent
    • wire
    • superior mesenteric artery

    Cite this

    Sun, ZH., Winder, J., Kelly, BE., Ellis, PK., Kennedy, PT., & Hirst, DG. (2004). Diagnostic value of CT virtual intravascular endoscopy in aortic stent-grafting. Journal of Endovascular Therapy, 11(1), 13-25.
    Sun, ZH ; Winder, John ; Kelly, BE ; Ellis, PK ; Kennedy, PT ; Hirst, DG. / Diagnostic value of CT virtual intravascular endoscopy in aortic stent-grafting. In: Journal of Endovascular Therapy. 2004 ; Vol. 11, No. 1. pp. 13-25.
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    abstract = "Purpose: To investigate the diagnostic value of postprocessing techniques for 3-dimensional (3D) computed tomography (CT), with emphasis on CT virtual intravascular endoscopy (VIE), in patients with abdominal aortic aneurysms (AAA) treated with suprarenal stent-grafts. Methods: The preprocedural and postprocedural CT datasets from 47 AAA patients (40 men; mean age 75 years, range 61-87) undergoing aortic stent-grafting with suprarenal fixation were examined. The CT datasets were processed to create various 3D reconstructions: shaded surface display (SSD), maximum intensity projection (MIP), and VIE. Three independent radiologists assessed various diagnostic parameters for each 3D reconstruction method and compared them to axial CT images. Results: Scores for VIE reconstructions were inferior to axial CT images in the visualization of normal arterial branches, measurement of the aneurysm diameter and neck length, as well as assessment of vessel patency and presence of endoleaks. VIE was rated superior to axial CT and other 3D imaging methods in visualizing the configuration of stent struts relative to the aortic branch ostia and the number of stent wires crossing the ostia in >80{\%} of cases. Conclusions: VIE was not found to play a role in most preoperative situations compared to axial CT images. However, VIE provided additional postgrafting information on the 3D relationship of the suprarenal stent struts to the aortic branch ostia (in particular the renal and superior mesenteric arteries). VIE findings might aid clinicians in accurately assessing the effect of suprarenal stent-grafting on the renal arteries.",
    keywords = "abdominal aortic aneurysm, suprarenal stent-grafts, computed tomography, 3D reconstructions, virtual endoscopy, renal artery, stent, wire, superior mesenteric artery",
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    Sun, ZH, Winder, J, Kelly, BE, Ellis, PK, Kennedy, PT & Hirst, DG 2004, 'Diagnostic value of CT virtual intravascular endoscopy in aortic stent-grafting', Journal of Endovascular Therapy, vol. 11, no. 1, pp. 13-25.

    Diagnostic value of CT virtual intravascular endoscopy in aortic stent-grafting. / Sun, ZH; Winder, John; Kelly, BE; Ellis, PK; Kennedy, PT; Hirst, DG.

    In: Journal of Endovascular Therapy, Vol. 11, No. 1, 02.2004, p. 13-25.

    Research output: Contribution to journalArticle

    TY - JOUR

    T1 - Diagnostic value of CT virtual intravascular endoscopy in aortic stent-grafting

    AU - Sun, ZH

    AU - Winder, John

    AU - Kelly, BE

    AU - Ellis, PK

    AU - Kennedy, PT

    AU - Hirst, DG

    PY - 2004/2

    Y1 - 2004/2

    N2 - Purpose: To investigate the diagnostic value of postprocessing techniques for 3-dimensional (3D) computed tomography (CT), with emphasis on CT virtual intravascular endoscopy (VIE), in patients with abdominal aortic aneurysms (AAA) treated with suprarenal stent-grafts. Methods: The preprocedural and postprocedural CT datasets from 47 AAA patients (40 men; mean age 75 years, range 61-87) undergoing aortic stent-grafting with suprarenal fixation were examined. The CT datasets were processed to create various 3D reconstructions: shaded surface display (SSD), maximum intensity projection (MIP), and VIE. Three independent radiologists assessed various diagnostic parameters for each 3D reconstruction method and compared them to axial CT images. Results: Scores for VIE reconstructions were inferior to axial CT images in the visualization of normal arterial branches, measurement of the aneurysm diameter and neck length, as well as assessment of vessel patency and presence of endoleaks. VIE was rated superior to axial CT and other 3D imaging methods in visualizing the configuration of stent struts relative to the aortic branch ostia and the number of stent wires crossing the ostia in >80% of cases. Conclusions: VIE was not found to play a role in most preoperative situations compared to axial CT images. However, VIE provided additional postgrafting information on the 3D relationship of the suprarenal stent struts to the aortic branch ostia (in particular the renal and superior mesenteric arteries). VIE findings might aid clinicians in accurately assessing the effect of suprarenal stent-grafting on the renal arteries.

    AB - Purpose: To investigate the diagnostic value of postprocessing techniques for 3-dimensional (3D) computed tomography (CT), with emphasis on CT virtual intravascular endoscopy (VIE), in patients with abdominal aortic aneurysms (AAA) treated with suprarenal stent-grafts. Methods: The preprocedural and postprocedural CT datasets from 47 AAA patients (40 men; mean age 75 years, range 61-87) undergoing aortic stent-grafting with suprarenal fixation were examined. The CT datasets were processed to create various 3D reconstructions: shaded surface display (SSD), maximum intensity projection (MIP), and VIE. Three independent radiologists assessed various diagnostic parameters for each 3D reconstruction method and compared them to axial CT images. Results: Scores for VIE reconstructions were inferior to axial CT images in the visualization of normal arterial branches, measurement of the aneurysm diameter and neck length, as well as assessment of vessel patency and presence of endoleaks. VIE was rated superior to axial CT and other 3D imaging methods in visualizing the configuration of stent struts relative to the aortic branch ostia and the number of stent wires crossing the ostia in >80% of cases. Conclusions: VIE was not found to play a role in most preoperative situations compared to axial CT images. However, VIE provided additional postgrafting information on the 3D relationship of the suprarenal stent struts to the aortic branch ostia (in particular the renal and superior mesenteric arteries). VIE findings might aid clinicians in accurately assessing the effect of suprarenal stent-grafting on the renal arteries.

    KW - abdominal aortic aneurysm

    KW - suprarenal stent-grafts

    KW - computed tomography

    KW - 3D reconstructions

    KW - virtual endoscopy

    KW - renal artery

    KW - stent

    KW - wire

    KW - superior mesenteric artery

    M3 - Article

    VL - 11

    SP - 13

    EP - 25

    JO - Journal of Endovascular Therapy

    T2 - Journal of Endovascular Therapy

    JF - Journal of Endovascular Therapy

    SN - 1526-6028

    IS - 1

    ER -

    Sun ZH, Winder J, Kelly BE, Ellis PK, Kennedy PT, Hirst DG. Diagnostic value of CT virtual intravascular endoscopy in aortic stent-grafting. Journal of Endovascular Therapy. 2004 Feb;11(1):13-25.