Takanori Masuda, Presenter: Nothing to Disclose

Naoyuki Imada, Abstract Co-Author: Nothing to Disclose

Hiroyuki Yamamoto, Abstract Co-Author: Nothing to Disclose

Yuichi Sano, Abstract Co-Author: Nothing to Disclose

Hiroya Asou, Abstract Co-Author: Nothing to Disclose

Tomoyasu Satou, Abstract Co-Author: Nothing to Disclose

Takayuki Oku, Abstract Co-Author: Nothing to Disclose

Naoya Maruyama, Abstract Co-Author: Nothing to Disclose

The purpose of this paper is to evaluate 64-row MDCT of 4 (compared from data) to create a good image for discussing the usefulness. We examined the relation between the ventricular rate and the image quality by using 64-row MDCT of 4 companies and the Pulsating Cardiac Phantom.

Helical scan of Pulsating cardiac phantom on the 50-150bpm(10bpm step) was performed using ECG gated 64row volume computed tomography of 4companys(G,S,T,P).The image quality of VR and MPR from each different company and different heartbeats was analyzed and compared in 4 point scoring (4:excellent; 1:poor; 3:accepted diagnosis) by 5MDs/RTs mean scoring values(MSV)and full width at half maximum(FWHM).

MSV of 4companies on all the heartbeats was G3.7±0.31 (MAX:4,MIN:3), S3.69±0.4(MAX:4,MIN:2),T3.85±0.18 (MAX:4,MIN:3) and P3.31±0.46 (MAX:4,MIN:2)respectively and FWHM of 4companies on all the heartbeats was G4.89±0.08 (MAX:5.02,MIN:4.76), S4.82±0.09(MAX:5.03,MIN:4.69),T4.94±0.09 (MAX:5.12,MIN:4.74) and P4.95±0.08(MAX:5.01,MIN:4.76).The MSV on heartbeats and the FWHM of all heartbeats on 64-row MDCT was not significantly different between the companies.

Our experiments showed that 64-row MDCT of 4companies can provide good image quality in all heart rates. However, the CT values a were different and the SD values changed among the machines according to the ventricular rate.　Our conclusion therefore is that it is very necessary to inspect the individual machines after these characteristics are understood .

This study gives a guideline for with high heartbeats using 64-row MDCT of 4different equipment makers.

Masuda, T, Imada, N, Yamamoto, H, Sano, Y, Asou, H, Satou, T, Oku, T, Maruyama, N, 64-Row MDCT of 4 Different Equipment Makers Companies Comparison That Uses Pulsating Cardiac Phantom.  Radiological Society of North America 2010 Scientific Assembly and Annual Meeting, November 28 - December 3, 2010 ,Chicago IL. http://archive.rsna.org/2010/9015851.html