dicomfind: command not found

Maybe Your $PATH variable doesn't contain the default paths? echo $PATH should give something like:

[root@server ~]# echo $PATH
/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin

If it's empty, You may set the PATH variable with this command

export PATH="/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin"

On Debian possible default full paths are:

/usr/bin/dicomfind - from package: vtk-dicom-tools

You may install the required package with command apt-get install {package}

Error in other languages:
dicomfind: bevel nie gevind nie
dicomfind: comandă negăsită
dicomfind: comando não encontrado
dicomfind: commande introuvable
dicomfind: command not found
dicomfind: käsku ei ole
dicomfind: không tìm thấy lệnh
dicomfind: komanda nerasta
dicomfind: Kommando nicht gefunden.
dicomfind: kommandot finns inte
dicomfind: komut yok
dicomfind: nie znaleziono polecenia
dicomfind: níor aimsíodh an t-ordú
dicomfind: no se encontró la orden
dicomfind: no s'ha trobat l'ordre
dicomfind: opdracht niet gevonden
dicomfind: parancs nem található
dicomfind: perintah tidak ditemukan
dicomfind: príkaz nenájdený
dicomfind: příkaz nenalezen
dicomfind: команда не найдена
dicomfind: командата не е открита
dicomfind: 命令找不到
dicomfind: コマンドが見つかりません