PMID- 30673337
OWN - NLM
STAT- MEDLINE
DCOM- 20191230
LR  - 20191230
IS  - 1546-3141 (Electronic)
IS  - 0361-803X (Linking)
VI  - 212
IP  - 4
DP  - 2019 Apr
TI  - Comparison of Tin Filter-Based Spectral Shaping CT and Low-Dose Protocol for 
      Detection of Urinary Calculi.
PG  - 808-814
LID - 10.2214/AJR.18.20154 [doi]
AB  - OBJECTIVE: The purpose of this study was to assess the performance of tin 
      filter-based spectral shaping CT compared with routine low-dose CT for detection 
      of urolithiasis. MATERIALS AND METHODS: Unenhanced third-generation dual-source 
      CT scans of 129 consecutively registered patients were retrospectively reviewed: 
      43 patients underwent CT for detection of renal stones with tin filtration (Sn150 
      kV); 43 patients underwent a routine low-dose CT protocol at 100 kV; and 43 
      patients underwent a routine CT protocol with automated tube potential selection 
      (110-120 kV). Image quality was evaluated subjectively and objectively. Volume CT 
      dose index (CTDI(vol)) and size-specific dose estimate (SSDE) were recorded. To 
      prospectively compare the performances of the spectral shaping protocol (Sn150 
      kV) with the standard (120 kV) and routine low-dose (100 kV) protocols, a phantom 
      (sheep kidneys) containing stones were also scanned with each protocol and 
      evaluated by two radiologists. RESULTS: CT with tin filtration resulted in 28% 
      and 66% reduction in CTDI(vol) compared with CT performed with routine low-dose 
      and standard-dose protocols (p < 0.05). Accordingly, it also led to 24% and 55% 
      reduction in SSDE compared with the low-dose and standard protocols (p < 0.05). 
      Subjective image quality and signal-to-noise ratio were similar between the tin 
      filtration and the routine low-dose groups (p > 0.05). The objective image noise 
      was similar in the three groups (p > 0.05). The phantom study showed no 
      difference in detection of renal stones between the three tube potential 
      settings. CONCLUSION: Using spectral shaping with tin filtration can 
      substantially reduce radiation dose compared with routine standard- and low-dose 
      abdominal CT for urinary stone disease.
FAU - Mozaffary, Amirhossein
AU  - Mozaffary A
AD  - 1 Department of Radiology, Northwestern Memorial Hospital, Northwestern 
      University Feinberg School of Medicine, 676 N Saint Clair St, Ste 800, Chicago, 
      IL 60611.
FAU - Trabzonlu, Tugce Agirlar
AU  - Trabzonlu TA
AD  - 1 Department of Radiology, Northwestern Memorial Hospital, Northwestern 
      University Feinberg School of Medicine, 676 N Saint Clair St, Ste 800, Chicago, 
      IL 60611.
FAU - Kim, Donald
AU  - Kim D
AD  - 1 Department of Radiology, Northwestern Memorial Hospital, Northwestern 
      University Feinberg School of Medicine, 676 N Saint Clair St, Ste 800, Chicago, 
      IL 60611.
FAU - Yaghmai, Vahid
AU  - Yaghmai V
AD  - 1 Department of Radiology, Northwestern Memorial Hospital, Northwestern 
      University Feinberg School of Medicine, 676 N Saint Clair St, Ste 800, Chicago, 
      IL 60611.
LA  - eng
PT  - Comparative Study
PT  - Journal Article
DEP - 20190123
PL  - United States
TA  - AJR Am J Roentgenol
JT  - AJR. American journal of roentgenology
JID - 7708173
RN  - 7440-31-5 (Tin)
SB  - IM
MH  - Adult
MH  - Aged
MH  - Animals
MH  - Female
MH  - Humans
MH  - Male
MH  - Middle Aged
MH  - Phantoms, Imaging
MH  - Radiation Dosage
MH  - Radiation Protection/methods
MH  - Retrospective Studies
MH  - Sheep
MH  - Tin
MH  - Tomography, X-Ray Computed/*methods
MH  - Urinary Calculi/*diagnostic imaging
OTO - NOTNLM
OT  - CT
OT  - dose reduction
OT  - image quality
OT  - kidney stone
OT  - spectral shielding
OT  - tin filtration
EDAT- 2019/01/24 06:00
MHDA- 2019/12/31 06:00
CRDT- 2019/01/24 06:00
PHST- 2019/01/24 06:00 [pubmed]
PHST- 2019/12/31 06:00 [medline]
PHST- 2019/01/24 06:00 [entrez]
AID - 10.2214/AJR.18.20154 [doi]
PST - ppublish
SO  - AJR Am J Roentgenol. 2019 Apr;212(4):808-814. doi: 10.2214/AJR.18.20154. Epub 
      2019 Jan 23.