PMID- 29297139
OWN - NLM
STAT- MEDLINE
DCOM- 20180828
LR  - 20191210
IS  - 1865-0341 (Electronic)
IS  - 1865-0333 (Linking)
VI  - 11
IP  - 1
DP  - 2018 Mar
TI  - Comparative evaluation of image quality among different detector configurations 
      using area detector computed tomography.
PG  - 54-60
LID - 10.1007/s12194-017-0437-y [doi]
AB  - The 320-detector row computed tomography (CT) system, i.e., the area detector CT 
      (ADCT), can perform helical scanning with detector configurations of 4-, 16-, 
      32-, 64-, 80-, 100-, and 160-detector rows for routine CT examinations. This 
      phantom study aimed to compare the quality of images obtained using helical scan 
      mode with different detector configurations. The image quality was measured using 
      modulation transfer function (MTF) and noise power spectrum (NPS). The system 
      performance function (SP), based on the pre-whitening theorem, was calculated as 
      MTF(2)/NPS, and compared between configurations. Five detector configurations, 
      i.e., 0.5 x 16 mm (16 row), 0.5 x 64 mm (64 row), 0.5 x 80 mm (80 row), 0.5 x 
      100 mm (100 row), and 0.5 x 160 mm (160 row), were compared using a constant 
      volume CT dose index (CTDI(vol)) of 25 mGy, simulating the scan of an adult 
      abdomen, and with a constant effective mAs value. The MTF was measured using the 
      wire method, and the NPS was measured from images of a 20-cm diameter phantom 
      with uniform content. The SP of 80-row configuration was the best, for the 
      constant CTDI(vol), followed by the 64-, 160-, 16-, and 100-row configurations. 
      The decrease in the rate of the 100- and 160-row configurations from the 80-row 
      configuration was approximately 30%. For the constant effective mAs, the SPs of 
      the 100-row and 160-row configurations were significantly lower, compared with 
      the other three detector configurations. The 80- and 64-row configurations were 
      adequate in cases that required dose efficiency rather than scan speed.
FAU - Miura, Yohei
AU  - Miura Y
AD  - Department of Medical Technology, Osaka General Medical Center, Osaka, Japan.
AD  - Graduate School of Medical Science, Kanazawa University, Kanazawa, Japan.
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. 
      ichikawa@mhs.mp.kanazawa-u.ac.jp.
FAU - Fujimura, Ichiro
AU  - Fujimura I
AD  - Graduate School of Medical Science, Kanazawa University, Kanazawa, Japan.
AD  - Department of Radiological Technology, Rinku General Medical Center, Izumisano, 
      Japan.
FAU - Hara, Takanori
AU  - Hara T
AD  - Department of Medical Technology, Nakatsugawa Municipal General Hospital, 
      Nakatsugawa, Japan.
FAU - Hoshino, Takashi
AU  - Hoshino T
AD  - Department of Radiology, Ishinkai Yao General Hospital, Yao, Japan.
FAU - Niwa, Shinji
AU  - Niwa S
AD  - Graduate School of Medical Science, Kanazawa University, Kanazawa, Japan.
AD  - Department of Medical Technology, Nakatsugawa Municipal General Hospital, 
      Nakatsugawa, Japan.
FAU - Funahashi, Masao
AU  - Funahashi M
AD  - Department of Medical Technology, Osaka General Medical Center, Osaka, Japan.
LA  - eng
PT  - Comparative Study
PT  - Evaluation Study
PT  - Journal Article
DEP - 20180102
PL  - Japan
TA  - Radiol Phys Technol
JT  - Radiological physics and technology
JID - 101467995
SB  - IM
MH  - Humans
MH  - Image Enhancement/*standards
MH  - *Phantoms, Imaging
MH  - Radiation Dosage
MH  - Radiographic Image Interpretation, Computer-Assisted/*standards
MH  - Radiography, Abdominal/methods/*standards
MH  - Tomography, X-Ray Computed/*instrumentation/methods/*standards
OTO - NOTNLM
OT  - Computed tomography
OT  - Detector configurations
OT  - Helical scan
OT  - Image quality
OT  - System performance function
OT  - Volume CT dose index
EDAT- 2018/01/04 06:00
MHDA- 2018/08/29 06:00
CRDT- 2018/01/04 06:00
PHST- 2017/09/22 00:00 [received]
PHST- 2017/12/15 00:00 [accepted]
PHST- 2017/12/10 00:00 [revised]
PHST- 2018/01/04 06:00 [pubmed]
PHST- 2018/08/29 06:00 [medline]
PHST- 2018/01/04 06:00 [entrez]
AID - 10.1007/s12194-017-0437-y [pii]
AID - 10.1007/s12194-017-0437-y [doi]
PST - ppublish
SO  - Radiol Phys Technol. 2018 Mar;11(1):54-60. doi: 10.1007/s12194-017-0437-y. Epub 
      2018 Jan 2.