http://bosphorus.ee.boun.edu.tr/hand/Home.aspx

biometrics.put.poznan.pl/vein-dataset/

you can find one dataset for hand veins here:

http://biometrics.idealtest.org/dbDetailForUser.do?id=6

you could also consider working on finger vein images which are easier to find online and they allow you to create high accuracy identification algorithms

i have conducted a related research you can see the paper here: 

https://www.researchgate.net/publication/281437215_A_low_cost_Finger_Vein_Authentication_System_using_Maximum_Curvature_Points

the algorithm presented can be also used for hand vein authentication and you can find the link to the database used in reference number six.

Conference Paper A low cost Finger Vein Authentication System, using Maximum ...

Hello

http://homepages.inf.ed.ac.uk/rbf/CVonline/Imagedbase.htm

Hiiii

I am working on dorsal hand veins. Can u please provide the database as the link given above is not working.

Nisha Charaya You should full the license agreement before download it

http://bosphorus.ee.boun.edu.tr/hand/HowtoObtain.aspx

The SUAS (Sakarya University of Applied Sciences) Hand Vein Database is intended for research on biometry based dorsal vein patterns of the hand. To get the SUAS Dorsal Hand Vein Database=> Deleted research item The research item mentioned here has been deleted

My email hasn't been answered yet after a few weeks, i did apply with the pdf.

Ömer Faruk Boyraz

https://www.google.com/search?rlz=1C1CHBF_arTH876TH876&sxsrf=ALeKk01aSv6i8J5xE_jGB4GnBuLTSbTtCw:1587182063336&q=hand+vein+datasets&tbm=isch&source=univ&sa=X&ved=2ahUKEwinxND4ifHoAhV9lEsFHeybCncQsAR6BAgJEAE

You can find several medical image dataset in:

https://www.kaggle.com/oboyraz/suas-dorsal-hand-vein-database

Data SUAS Dorsal Hand Vein Database