Abstract
Purpose: To investigate opacification of head and neck vasculature during computed tomography (CT) of supraclavicular lymph nodes with a quadruple-phase contrast media and saline dual-injection protocol. Materials and Methods: This retrospective study was institutional review board approved. In 180 consecutive patients, routine head and neck CT was performed with one of two protocols: protocol A, craniocaudal scan direction with 100 mL of contrast material injected intravenously as a single bolus; or protocol B, 100 mL of contrast material injected in four phases (phases 1-2, 60 mL of contrast material and saline injected at 2.5 mL/sec; phases 3-4, 40 mL of contrast material and saline injected at 2.5 mL/sec); both protocols had a fixed scan delay of 70 seconds. Attenuation of supraclavicular arteries and veins was measured with arteriovenous contrast ratio (AVCR) and contrast-to-noise ratio (CNR). Effective dose was calculated. Data were compared with the two-sample t test. Receiver operating characteristic (ROC) and visual grading characteristic analyses were performed. Results: Arterial attenuation was up to 20% higher (P
| Original language | English (US) |
|---|---|
| Pages (from-to) | 571-577 |
| Number of pages | 7 |
| Journal | Radiology |
| Volume | 279 |
| Issue number | 2 |
| DOIs | |
| State | Published - May 1 2016 |
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ASJC Scopus subject areas
- Radiology Nuclear Medicine and imaging
Cite this
Comparison of standard and Quadruple-Phase contrast Material injection for artifacts, image Quality, and radiation Dose in the evaluation of head and neck cancer Metastases. / Saade, Charbel; El-Merhi, Fadi; Mayat, Ahmad; Brennan, Patrick C.; Yousem, David Mark.
In: Radiology, Vol. 279, No. 2, 01.05.2016, p. 571-577.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Comparison of standard and Quadruple-Phase contrast Material injection for artifacts, image Quality, and radiation Dose in the evaluation of head and neck cancer Metastases
AU - Saade, Charbel
AU - El-Merhi, Fadi
AU - Mayat, Ahmad
AU - Brennan, Patrick C.
AU - Yousem, David Mark
PY - 2016/5/1
Y1 - 2016/5/1
N2 - Purpose: To investigate opacification of head and neck vasculature during computed tomography (CT) of supraclavicular lymph nodes with a quadruple-phase contrast media and saline dual-injection protocol. Materials and Methods: This retrospective study was institutional review board approved. In 180 consecutive patients, routine head and neck CT was performed with one of two protocols: protocol A, craniocaudal scan direction with 100 mL of contrast material injected intravenously as a single bolus; or protocol B, 100 mL of contrast material injected in four phases (phases 1-2, 60 mL of contrast material and saline injected at 2.5 mL/sec; phases 3-4, 40 mL of contrast material and saline injected at 2.5 mL/sec); both protocols had a fixed scan delay of 70 seconds. Attenuation of supraclavicular arteries and veins was measured with arteriovenous contrast ratio (AVCR) and contrast-to-noise ratio (CNR). Effective dose was calculated. Data were compared with the two-sample t test. Receiver operating characteristic (ROC) and visual grading characteristic analyses were performed. Results: Arterial attenuation was up to 20% higher (P
AB - Purpose: To investigate opacification of head and neck vasculature during computed tomography (CT) of supraclavicular lymph nodes with a quadruple-phase contrast media and saline dual-injection protocol. Materials and Methods: This retrospective study was institutional review board approved. In 180 consecutive patients, routine head and neck CT was performed with one of two protocols: protocol A, craniocaudal scan direction with 100 mL of contrast material injected intravenously as a single bolus; or protocol B, 100 mL of contrast material injected in four phases (phases 1-2, 60 mL of contrast material and saline injected at 2.5 mL/sec; phases 3-4, 40 mL of contrast material and saline injected at 2.5 mL/sec); both protocols had a fixed scan delay of 70 seconds. Attenuation of supraclavicular arteries and veins was measured with arteriovenous contrast ratio (AVCR) and contrast-to-noise ratio (CNR). Effective dose was calculated. Data were compared with the two-sample t test. Receiver operating characteristic (ROC) and visual grading characteristic analyses were performed. Results: Arterial attenuation was up to 20% higher (P
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UR - http://www.scopus.com/inward/citedby.url?scp=84965136600&partnerID=8YFLogxK
U2 - 10.1148/radiol.2015150511
DO - 10.1148/radiol.2015150511
M3 - Article
C2 - 26624972
AN - SCOPUS:84965136600
VL - 279
SP - 571
EP - 577
JO - Radiology
JF - Radiology
SN - 0033-8419
IS - 2
ER -