Abstract #4098
Reproducibility of ADC in colorectal liver metastases at 3T: a cross-vendor evaluation
Sabrina Doblas 1 , Philippe Garteiser 1 , Vincent Barrau 2,3 , Magaly Zappa 1,2 , Valrie Vilgrain 1,2 , and Bernard E Van Beers 1,2
1
U1149 - CRI, INSERM, Paris, France,
2
Radiology,
Beaujon Hospital, Clichy, France,
3
CCN,
Saint-Denis, France
The aim of our study was to assess the reproducibility
of ADC at 3T in liver metastases of colorectal cancer in
a two-center, cross-vendor configuration. The study was
carried out with 5 patients bearing 19 tumors assessed
on a 3T GE Discovery system, and 6 patients bearing 27
tumors assessed on a 3T Philips Ingenia system. Two
acquisition protocols were used for test-retest:
protocol A included 4 b values for ADC measurements,
while protocol B included 10 b values for ADC
measurements. Coefficients of reproducibility were
calculated and compared. Reproducibility of ADC in
colorectal liver metastases at 3T was similar between
vendors, and comparable to previously reported figures
at 1.5T. The best reproducibility was obtained for ADC
measurements on the extended b space coverage
acquisition protocol.
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