Purpose
CT colonography (CTC) is gaining widespread acceptance for minimally invasive evaluation of the large bowel,
and has increasingly been used as a diagnostic complement in case of incomplete optical colonoscopy or for colorectal cancer screening purposes.
In parallel with the evolution of CT technology and the related improvement of CTC diagnostic accuracy,
new tools for visualization and management of CT images have been developed.
In this latter setting,
open source software (such as OsiriX) and new,
powerful mobile devices have become available to the medical...
Methods and Materials
We retrospectively reviewed 67 CTC examinations performed in a colorectal cancer screening setting.
CTC images had been acquired in the supine and prone position using a low radiation dose and a fecal tagging protocol based on oral administration of iodinated contrast material.
All datasets were wirelessly imported in DICOM format on a iPhone 4® 32GB (Apple Inc,
Cupertino,
CA) running the OsiriX iPhone app version 1.1.3 (www.osirix-viewer.com) from a Macintosh desktop computer (iMac® 3.06GHz) connected to our hospital PACS and running OsiriX 3.7.1.
Two experienced...
Results
All lesions diagnosed on the iMac® were also detected on the iPhone®.
The time required to complete reading of CTC datasets was significantly longer using the iPhone® (13.31±6.29 minutes) than with the iMac® (5.51±2.45 minutes;p<0.01),
predominantly due to the need to repeatedly pan and zoom over the various colonic segments on the small iPhone® screen.
Conclusion
The iPhone® can reliably be used for preliminary 2D reading of CTC datasets.
However,
it requires a substantially longer time for complete image analysis compared with a desktop workstation.
References
Neri E,
Giusti P,
Battolla L,
Vagli P,
Boraschi P,
Lencioni R,
Caramella D,
Bartolozzi C.
Colorectal cancer: role of CT colonography in preoperative evaluation after incomplete colonoscopy.
Radiology 2002;223(3):615-9;
Macari M,
Berman P,
Dicker M,
Milano A,
Megibow AJ.
Usefulness of CT colonography in patients with incomplete colonoscopy.
AJR Am J Roentgenol 1999;173(3):561-4;
Johnson CD,
Chen MH,
Toledano AY,
Heiken JP,
Dachman A,
Kuo MD,
Menias CO,
Siewert B,
Cheema JI,
Obregon RG,
Fidler JL,
Zimmerman P,
Horton KM,
Coakley K,
Iyer RB,
Hara...
Personal Information
L.
Faggioni*,
E.
Neri,
P.
Vagli,
E.
Picano,
C.
Bartolozzi
Diagnostic and Interventional Radiology - University of Pisa
Via Paradisa,
2 - 56100 Pisa (Italy)
(*) Corresponding author.
Email
[email protected]
Telephone +39050997312