State-of-the-Art Imaging With 64-Channel Multidetector CT Angiography

Abstract

During the past decade, computed tomography angiography (CTA) has become a standard noninvasive imaging method for the depiction of vascular anatomy and pathology. The quality and speed of CTA examinations have increased dramatically as CT technology has evolved from single-channel spiral CT systems (circa 1990) to multichannel (4-, 8-, 10-, and 16-slice) spiral CT systems (circa 1998 through 2001). In 2004, 64-slice multichannel CT technology became available in the United States, with the first installation occurring at the Mayo Clinic College of Medicine. We describe our initial experience using this state-of-the art technology, focusing on examinations that illustrate the increased diagnostic resolution of vascular anatomy and pathology, and the effectiveness of 2-and 3-dimensional postprocessing using a 64-channel CT system. Future applications of 64-channel technology for preoperative and postoperative vascular surgery and endovascular techniques are also described.

Keywords

computed tomography angiography 64-channel computed tomography noninvasive imaging

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References

1. Elkouri S. Panneton JM , Andrews JC , et al. Computed tomography and ultrasound in follow-up of patients after endovascular repair of abdominal aortic aneurysm. Ann Vasc Surg 18(3):271-279, 2004.

2. Kawamoto S, Montgomery RA , Lawler LP , et al. Multi-detector row CT evaluation of living renal donors prior to laparoscopic nephrectomy. Radiographics 24(2):453-466, 2004.

3. Kissin EY , Merkel PA .Diagnostic imaging in Takayasu's arteritis. Curr Opin Rheumatol 16(1):31-37, 2004.

4. Kirkpatrick ID , Kroeker MA , Greenberg HM . Biphasic CT with mesenteric CT angiography in the evaluation of acute mesenteric ischemia: initial experience. Radiology 229(1):91-98, 2003.

5. Rubin GD , Schmidt AJ , Logan U , et al. Multi-detector row CT angiography of lower extremity arterial inflow and runoff: Initial experience. Radiology 221:146-158, 2001.

6. Willmann JK , Wildermuth S , Pfammatter T , et al. Aortoiliac and renal arteries: prospective intraindividual comparison of contrast-enhanced three-dimensional MR angiography and multi-detector row CT angiography. Radiology 226(3):798-811, 2003.

7. Carlos RC , Axelrod DA , Ellis JH , et al. Incorporating patient-centered outcomes in the analysis of cost-effectiveness: imaging strategies for renovascular hypertension. AJR Am J Roentgenol 181(6):1653-1661, 2003.

8. Pannu HK , Fishman EK . Multidetector computed tomographic evaluation of the renal artery Abdom Imaging 27(6):611-619, 2002.

9. Macari M. Infrarenal abdominal aortic aneurysms at multi-detector row CT angiography: Intravascular enhancement without a timing acquisition. Radiology 220:519-523, 2001.

10.

10. Flohr T , Stierstorfer K , Raupach R , et al. Performance evaluation of a 64-slice CT system with z-flying spot. Rofo 176(12):1803-1810, 2004.

11.

11. McCollough CH , Lindell EP , Primak A , et al. Hot Topic: early experience with 64-slice CT and z-axis oversampling: novel applications and the elimination of helical artifacts in neuro CT. RSNA Chicago, November 2004.

12.

12. Kalra MK , Maher MM , Kamath RS , et al. Sixteendetector row CT of abdomen and pelvis: study for optimization of z-axis modulation technique performed in 153 patients. Radiology 233(1):241-249, 2004.

13.

13. Kalra MK , Maher MM , Toth TL , et al. Comparison of z-axis automatic tube current modulation technology with fixed tube current CT scanning of abdomen and pelvis. Radiology 232(2):347-353, 2004.

14.

14. McCollough CH , Kofler J , Zink F . Hot Topic: The dose consequences of new CT technology: Evaluation of AEC and dose efficiency from 4 to 64-slice systems. RSNA Chicago, November 2004.