Winkelmann Helmut
Winter Richard
Woloschek Steven J.
Wong Jeremy
Wong Roland
Wons Heinz
X-ray Capillary Optics AB
Xiao Qi-Fan
Xonics Imaging, Inc.
Yacoby Yizhak
Yamada Hifumi
Yan Di
Yang Zhao
Yanome Masakatsu
Yasumi Masayuki
Yon Jurie
Young Edward W. A.
Yuan Fang
Zastrow Dale S.
Zetterer Thomas