PMID- 27056437
OWN - NLM
STAT- MEDLINE
DCOM- 20170208
LR  - 20170208
IS  - 1724-191X (Electronic)
IS  - 1120-1797 (Linking)
VI  - 32
IP  - 4
DP  - 2016 Apr
TI  - Temporal resolution measurement of 128-slice dual source and 320-row area 
      detector computed tomography scanners in helical acquisition mode using the 
      impulse method.
PG  - 625-30
LID - S1120-1797(16)00525-1 [pii]
LID - 10.1016/j.ejmp.2016.02.015 [doi]
AB  - PURPOSE: To analyse the temporal resolution (TR) of modern computed tomography 
      (CT) scanners using the impulse method, and assess the actual maximum TR at 
      respective helical acquisition modes. METHODS: To assess the actual TR of helical 
      acquisition modes of a 128-slice dual source CT (DSCT) scanner and a 320-row area 
      detector CT (ADCT) scanner, we assessed the TRs of various acquisition 
      combinations of a pitch factor (P) and gantry rotation time (R). RESULTS: The TR 
      of the helical acquisition modes for the 128-slice DSCT scanner continuously 
      improved with a shorter gantry rotation time and greater pitch factor. However, 
      for the 320-row ADCT scanner, the TR with a pitch factor of <1.0 was almost equal 
      to the gantry rotation time, whereas with pitch factor of >1.0, it was 
      approximately one half of the gantry rotation time. The maximum TR values of 
      single- and dual-source helical acquisition modes for the 128-slice DSCT scanner 
      were 0.138 (R/P=0.285/1.5) and 0.074s (R/P=0.285/3.2), and the maximum TR values 
      of the 64x0.5- and 160x0.5-mm detector configurations of the helical acquisition 
      modes for the 320-row ADCT scanner were 0.120 (R/P=0.275/1.375) and 0.195s 
      (R/P=0.3/0.6), respectively. CONCLUSION: Because the TR of a CT scanner is not 
      accurately depicted in the specifications of the individual scanner, appropriate 
      acquisition conditions should be determined based on the actual TR measurement.
CI  - Copyright (c) 2016 Associazione Italiana di Fisica Medica. Published by Elsevier 
      Ltd. All rights reserved.
FAU - Hara, Takanori
AU  - Hara T
AD  - Department of Medical Technology, Nakatsugawa Municipal General Hospital, 1522-1 
      Komanba, Nakatsugawa, Gifu 508-0011, Japan. Electronic address: 
      hara_tnk2@ybb.ne.jp.
FAU - Urikura, Atsushi
AU  - Urikura A
AD  - Department of Diagnostic Radiology, Shizuoka Cancer Centre, 1007 Shimonagakubo, 
      Nagaizumi, Sunto, Shizuoka 411-8777, Japan. Electronic address: 
      at.urikura@scchr.jp.
FAU - Ichikawa, Katsuhiro
AU  - Ichikawa K
AD  - Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, 
      5-11-80 Kodatsuno, Kanazawa, Ishikawa 920-0942, Japan. Electronic address: 
      ichikawa@mhs.mp.kanazawa-u.ac.jp.
FAU - Hoshino, Takashi
AU  - Hoshino T
AD  - Department of Radiology, Ishinkai Yao General Hospital, 1-41 Numa, Yao, Osaka 
      581-0036, Japan. Electronic address: hoshi0311@hera.eonet.ne.jp.
FAU - Nishimaru, Eiji
AU  - Nishimaru E
AD  - Department of Radiology, Hiroshima University Hospital, 1-2-3 Kasumi, Minami-ku, 
      Hiroshima 734-8551, Japan. Electronic address: eiji2403@tk9.so-net.ne.jp.
FAU - Niwa, Shinji
AU  - Niwa S
AD  - Department of Medical Technology, Nakatsugawa Municipal General Hospital, 1522-1 
      Komanba, Nakatsugawa, Gifu 508-0011, Japan. Electronic address: 
      shinji-niwa.gifu@aria.ocn.ne.jp.
LA  - eng
PT  - Journal Article
DEP - 20160404
PL  - Italy
TA  - Phys Med
JT  - Physica medica : PM : an international journal devoted to the applications of 
      physics to medicine and biology : official journal of the Italian Association of 
      Biomedical Physics (AIFB)
JID - 9302888
SB  - IM
MH  - *Tomography Scanners, X-Ray Computed
MH  - Tomography, X-Ray Computed/*instrumentation/*methods
OTO - NOTNLM
OT  - Gantry rotation time
OT  - Helical acquisition mode
OT  - Pitch factor
OT  - Temporal resolution
EDAT- 2016/04/09 06:00
MHDA- 2017/02/09 06:00
CRDT- 2016/04/09 06:00
PHST- 2015/08/28 00:00 [received]
PHST- 2016/01/09 00:00 [revised]
PHST- 2016/02/29 00:00 [accepted]
PHST- 2016/04/09 06:00 [entrez]
PHST- 2016/04/09 06:00 [pubmed]
PHST- 2017/02/09 06:00 [medline]
AID - S1120-1797(16)00525-1 [pii]
AID - 10.1016/j.ejmp.2016.02.015 [doi]
PST - ppublish
SO  - Phys Med. 2016 Apr;32(4):625-30. doi: 10.1016/j.ejmp.2016.02.015. Epub 2016 Apr 
      4.